SCION xB (EM0091U)
1
2006 xBELECTRICAL WIRING DIAGRAM
Section Code Page
INTRODUCTION A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
HOW TO USE THIS MANUAL B. . . . . . . . . . . . . . . . . . . 3
TROUBLESHOOTING C. . . . . . . . . . . . . . . . . . . . . . . . . . 12
ABBREVIATIONS D. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
GLOSSARY OF TERMS AND SYMBOLS E. . . . . . . . . 18
RELAY LOCATIONS F. . . . . . . . . . . . . . . . . . . . . . . . . . . 20
ELECTRICAL WIRING ROUTING G. . . . . . . . . . . . . . . 28
SYSTEM CIRCUITS H. . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
GROUND POINT I. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
POWER SOURCE (Current Flow Chart) J. . . . . . . . . 172
CONNECTOR LIST K. . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
PART NUMBER OF CONNECTORS L. . . . . . . . . . . . . 190
OVERALL ELECTRICAL WIRING DIAGRAM M. . . . . 194
2
SCION xB (EM0091U)
A INTRODUCTION
This manual consists of the following 13 sections:
No. Section Description
AINDEX Index of the contents of this manual.
AINTRODUCTION Brief explanation of each section.
B HOW TO USE THISMANUAL Instructions on how to use this manual.
C TROUBLE–SHOOTING Describes the basic inspection procedures for electrical circuits.
D ABBREVIATIONS Defines the abbreviations used in this manual.
EGLOSSARY OFTERMS ANDSYMBOLS
Defines the symbols and functions of major parts.
F RELAY LOCATIONS Shows position of the Electronic Control Unit, Relays, Relay Block, etc.This section is closely related to the system circuit.
G ELECTRICALWIRING ROUTING
Describes position of Parts Connectors, Splice points, Ground points, etc.This section is closely related to the system circuit.
H
INDEX Index of the system circuits.
HSYSTEM CIRCUITS
Electrical circuits of each system are shown from the power supply through groundpoints. Wiring connections and their positions are shown and classified by codeaccording to the connection method. (Refer to the section, ”How to use this manual”).The ”System Outline” and ”Service Hints” useful for troubleshooting are also containedin this section.
I GROUND POINT Shows ground positions of all parts described in this manual.
J POWER SOURCE(Current Flow Chart) Describes power distribution from the power supply to various electrical loads.
K CONNECTOR LIST Describes the form of the connectors for the parts appeared in this book.This section is closely related to the system circuit.
L PART NUMBER OFCONNECTORS Indicates the part number of the connectors used in this manual.
MOVERALLELECTRICALWIRING DIAGRAM
Provides circuit diagrams showing the circuit connections.
NOTICEAlways follow the directions given in the above repair manuals when handlingsupplemental restraint system components (such as removal, installation,inspection, etc.) in order to prevent accidents and supplemental restraintsystem malfunction.
2005All rights reserved. This book may not bereproduced or copied, in whole or in part, withoutthe written permission of Toyota MotorCorporation.First Printing : Nov. 28, 2005 01–051128–00
FOREWORD
This wiring diagram manual has been prepared to provide
information on the electrical system of the 2006 xB.
This manual applies to the models listed below. It covers all
information in the previously issued Pub. No. EM0090U, and
includes all production changes effective Dec. 2005 or later.
Applicable models: NCP31 Series
Refer to the following manuals for additional service
specifications and repair procedures for these models:
Manual Name Pub. No. 2006 SCION xB Repair Manual
2006 SCION New Car Features
RM0091U
NM0060U
All information in this manual is based on the latest product
information at the time of publication. However, specifications
and procedures are subject to change without notice.
SCION xB (EM0091U)
3
HOW TO USE THIS MANUAL B
This manual provides information on the electrical circuits installed on vehicles bydividing them into a circuit for each system.
The actual wiring of each system circuit is shown from the point where the powersource is received from the battery as far as each ground point. (All circuitdiagrams are shown with the switches in the OFF position.)
When troubleshooting any problem, first understand the operation of the circuitwhere the problem was detected (see System Circuit section), the power sourcesupplying power to that circuit (see Power Source section), and the ground points(see Ground Point section). See the System Outline to understand the circuitoperation.
When the circuit operation is understood, begin troubleshooting of the problemcircuit to isolate the cause. Use Relay Location and Electrical Wiring Routingsections to find each part, junction block and wiring harness connectors, wiringharness and wiring harness connectors and ground points of each system circuit.Internal wiring for each junction block is also provided for better understanding ofconnection within a junction block.Wiring related to each system is indicated in each system circuit by arrows(from__, to__). When overall connections are required, see the Overall ElectricalWiring Diagram at the end of this manual.
[B]W
– R
G –
W
Ski
d C
ontr
ol E
CU
with
Act
uato
r
G –
W
C7
Y –
G
Com
bina
tion
Met
er
R –
L
Rea
rLi
ghts
R –
L
(S/D
)(S
/D)
(S/D
)
(W/G
)
G –
B
W –
B
W –
B
Rea
r C
ombi
natio
nR
6
W –
BW
– B
Rea
r C
ombi
natio
nR
7
W –
BG
– R
Sto
p
Sto
p
G –
RG
– R
7
LL
R
L
Stop Light
2
(BAT)
15ASTOP
(IG)
IBIB
7.5AGAUGE
3 41
[A]
S6Stop Light SW
G – W
1
2
[D]
[C]
[E]
[F]
[G]
[N]
L4Light Failure Sensor
3C
3C
15 IE1
IE114
7
15
48
13
4
50
[K]
[H]
[I]
[L]
[M]
[J]
11
H17High MountedStop Light
(Shielded)
BO BL
BV1W – B
G – RBV1
1
2
6
3
3
4
1
1
12
Ligh
t RH
Ligh
t LH
4
SCION xB (EM0091U)
B HOW TO USE THIS MANUAL
* The system shown here is an EXAMPLE ONLY. It is different to the actualcircuit shown in the SYSTEM CIRCUITS SECTION.
SCION xB (EM0091U)
5
B
[A] : System Title
[B] : Indicates a Relay Block. No shading is used andonly the Relay Block No. is shown to distinguish itfrom the J/BExample: Indicates Relay Block No.1
[C] : ( ) is used to indicate different wiring andconnector, etc. when the vehicle model, enginetype, or specification is different.
[D] : Indicates related system.
[E] : Indicates the wiring harness and wiring harnessconnector. The wiring harness with male terminal isshown with arrows ( ).Outside numerals are pin numbers.
Female Male ( )
The first letter of the code for each wiring harnessand wiring harness connector(s) indicates thecomponent’s location, e.g, ”E” for the EngineCompartment, ”I” for the Instrument Panel andSurrounding area, and ”B” for the Body andSurrounding area.
When more than one code has the first and secondletters in common, followed by numbers (e.g, IH1,IH2), this indicates the same type of wiring harnessand wiring harness connector.
[F] : Represents a part (all parts are shown in sky blue).The code is the same as the code used in partsposition.
[G] : Junction Block (The number in the circle is the J/BNo. and the connector code is shown beside it).Junction Blocks are shaded to clearly separatethem from other parts.
3C indicates thatit is insideJunction BlockNo.3
Example:
[H] : Indicates the wiring color.
Wire colors are indicated by an alphabetical code.
B = Black W = White BR = Brown
L = Blue V = Violet SB = Sky Blue
R = Red G = Green LG = Light Green
P = Pink Y = Yellow GR = Gray
O = Orange
The first letter indicates the basic wire color and thesecond letter indicates the color of the stripe.
Example: L – Y
L(Blue)
Y(Yellow)
[I] : Indicates a wiring Splice Point
Example:
[J] : Indicates a shielded cable.
[K] : Indicates the pin number of the connector.The numbering system is different for female andmale connectors.
Example: Numbered in orderfrom upper left tolower right
Numbered in orderfrom upper right tolower left
Female Male
[L] : Indicates a ground point.
The first letter of the code for each ground point(s)indicates the component’s location, e.g, ”E” for theEngine Compartment, ”I” for the Instrument Paneland Surrounding area, and ”B” for the Body andSurrounding area.
[M] : Page No.
[N] : Indicates the ignition key position(s) when thepower is supplied to the fuse(s).
[O]
[P]
[Q]
[R]
[S]
[T]
6
SCION xB (EM0091U)
B HOW TO USE THIS MANUAL
Current is applied at all times through the STOP fuse to TERMINAL 2 of the stop light SW.When the ignition SW is turned on, current flows from the GAUGE fuse to TERMINAL 8 of the light failure sensor, and also flowsthrough the rear lights warning light to TERMINAL 4 of the light failure sensor.
Stop Light Disconnection WarningWhen the ignition SW is turned on and the brake pedal is pressed (Stop light SW on), if the stop light circuit is open, the currentflowing from TERMINAL 7 of the light failure sensor to TERMINALS 1, 2 changes, so the light failure sensor detects thedisconnection and the warning circuit of the light failure sensor is activated.As a result, the current flows from TERMINAL 4 of the light failure sensor to TERMINAL 11 to GROUND and turns the rear lightswarning light on. By pressing the brake pedal, the current flowing to TERMINAL 8 of the light failure sensor keeps the warningcircuit on and holds the warning light on until the ignition SW is turned off.
: Parts Location
Code See Page Code See Page Code See Page
C7 34 L4 36 R7 37
H17 36 R6 37 S6 35
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 18 R/B No.1 (Instrument Panel Brace LH)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
3C 22 Instrument Panel Wire and J/B No.3 (Instrument Panel Brace LH)
IB 20 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IE1 42 Floor Wire and Instrument Panel Wire (Left Kick Panel)
BV1 50 Luggage Room Wire and Floor Wire (Luggage Room Left)
: Ground Points
Code See Page Ground Points Location
BL 50 Under the Left Center Pillar
BO 50 Back Panel Center
System Outline
SCION xB (EM0091U)
7
B
[O] : Explains the system outline.
[P] : Indicates the reference page showing the position on the vehicle of the parts in the system circuit.
Example : Part ”L4” (Light Failure Sensor) is on page 36 of the manual.∗ The letter in the code is from the first letter of the part, and the number indicates its order in parts
starting with that letter.Example : L 4 Á
ÁParts is 4th in orderLight Failure Sensor
[Q] : Indicates the reference page showing the position on the vehicle of Relay Block Connectors in the system circuit.
Example : Connector ”1” is described on page 18 of this manual and is installed on the left side of the instrumentpanel.
[R] : Indicates the reference page showing the position on the vehicle of J/B and Wire Harness in the system circuit.
Example : Connector ”3C” connects the Instrument Panel Wire and J/B No.3. It is described on page 22 of thismanual, and is installed on the instrument panel left side.
[S] : Indicates the reference page describing the wiring harness and wiring harness connector (the female wiringharness is shown first, followed by the male wiring harness).
Example : Connector ”IE1” connects the floor wire (female) and Instrument panel wire (male). It is described onpage 42 of this manual, and is installed on the left side kick panel.
[T] : Indicates the reference page showing the position of the ground points on the vehicle.
Example : Ground point ”BO” is described on page 50 of this manual and is installed on the back panel center.
8
SCION xB (EM0091U)
B HOW TO USE THIS MANUAL
The ground points circuit diagram shows the connections from all major parts to the respective ground points. Whentroubleshooting a faulty ground point, checking the system circuits which use a common ground may help you identifythe problem ground quickly. The relationship between ground points ( EA , IB and IC shown below) can also bechecked this way.
5
5
5
5
4
4
4
4
4BA15
IB18
EA2
ID115
IC33
IA12
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B W–B
W–B
W–B W–B
W–B
W–B W–B W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B W–B W–B
W–B
BR
W–B
BR BR
W–B
W–BW–B
W–B
W–B
W–B
W–BW–B W–B
W–B
W–B
W–B
W–B
W–B
BR
W–B
BRBR
BR
W–B(4A–GZE)
W–BW–B
EA
IB IC
4
4
3E5
3E6
3G13
3F3
3D1
3B7
W–B
W–B
W–BW–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B3C7
10
A
A
A
A
A
A
JunctionConnector
J 1
W–B
W–B
W–B
W–B
BR
W–B
W–B
W–B
W–B
W–B
W–B
I GROUND POINT
FAN MAIN Relay
FAN MAIN Relay
A/C Relay No.2
A/C Relay No.3
Radiator Fan Motor
Headlight Cleaner Relay
Headlight LH
Headlight RH
Front Fog Light LH
Brake Fluid Level SW
Front Fog Light RHFront Turn Signal Light RH
Front Clearance Light RH
Front Turn Signal Light LH
Front Clearance Light LH
Door Lock Control SW
Door Courtesy SW RH
Door Lock Motor RH
Door Lock Control Relay
Blower Resistor
Idle–Up SW
A/C Amplifier
Radio and Player
HEATER Relay
Auto Antenna Motor
A/C Control Assembly
Blower Motor
Blower SW
Parking Brake SW
Combination Meter
Combination SW
Cruise Control ECU
Remote Control Mirror SW
Turn Signal Flasher
Defogger SW
Unlock Warning SW
Power Window Master SW
Power Window ControlRelay
Door Courtesy SW LH
Door Lock Control SW
Door Lock Motor LH
Fuel Control SW
Woofer Speaker Amplifier
Combination Meter
Combination Meter
Fuel Sender
Cigarette Lighter
O/D Main SW
Clock
Combination SW
* The system shown here is an EXAMPLE ONLY. It is different to the actual circuit shown in the SYSTEM CIRCUITS SECTION.
SCION xB (EM0091U)
9
B
The ”Current Flow Chart” section, describes which parts each power source (fuses, fusible links, and circuit breakers)transmits current to. In the Power Source circuit diagram, the conditions when battery power is supplied to each systemare explained. Since all System Circuit diagrams start from the power source, the power source system must be fullyunderstood.
AM
2
AM
1
IG2
AC
C
IG1
ST
1
ST
2
W –
R
W
J POWER SOURCE (Current Flow Chart)The chart below shows the route by which current flows from the battery to each electrical source(Fusible Link, Circuit Breaker, Fues, etc.) and other parts
30A AM2
Starter
Battery Fusible Link Block
100A ALT
2 6
6
Short Pin10A ECU–B
7.5A DOME2
15A EFI
10A HAZARD
20A RADIO NO.1
10A HORN
60A ABS
2
2
S 2
5
Engine Room R/B (See Page 20)
194187180166210
214230112122
Page
ABSABS and Traction ControlCruise ControlElectronically Controlled TransmissionMultiplex Communication System
Fuse
STOP20A
10A DOME
Cigarette LighterCombination MeterHeadlightInterior LightKey Reminder and Seat Belt WarningLight Auto Turn Off System
System
Theft Deterrent and Door Lock Control
1.25BFL MAIN
Power Source
50A MAIN
4
11 2
1W – R
20A DEFOG
B – Y
8
2
I8
W – R
Ignition SW
11
7.5A DOME
21
RWEB1
7
EB1
BA11
6
W
WW
Battery
B
B
B2
21
22
2
2
7.5A AM1
15A HAZ–RADIO
1
212
W
∗ The system shown here is an EXAMPLE ONLY. It is different to the actual circuit shown in the SYSTEM CIRCUITS SECTION.
K CONNECTOR LIST
1 2 3 4
Dark GrayI14
1 2 3 4
5 6 7 8
I15
1 2 3 4 5 76
GrayI16[A] [C]
K CONNECTOR LIST
1 2 3 4 56 7 8 9 10 11 12 13
1234513 6789101112
BA1 Black BD2 Gray [F][E]
1 2 3 45 6 7 8 9 10 11 11
4 3 2 1
5678910
A BA A B C C C
D DD D
BAA
AA
AAA A 1
1 2 1 2
[B] Black
J1 J4 K1 K2 L1Dark Gray
[D]
10
SCION xB (EM0091U)
B HOW TO USE THIS MANUAL
[A] : Indicates connector to be connected to a part. (The numeral indicates the pin No.)
[B] : Junction ConnectorIndicates a connector which is connected to a short terminal.
Junction Connector
Short TerminalSame Color
Junction connector in this manual include a short terminal which isconnected to a number of wire harnesses. Always performinspection with the short terminal installed. (When installing thewire harnesses, the harnesses can be connected to any positionwithin the short terminal grouping. Accordingly, in other vehicles,the same position in the short terminal may be connected to a wireharness from a different part.)Wire harness sharing the same short terminal grouping have thesame color.
[C] : Parts CodeThe first letter of the code is taken from the first letter of part, and the numbers indicates its order in parts whichstart with the same letter.
[D] : Connector ColorConnectors not indicated are milky white in color.
[E] : Indicates the connector shapes which are used to join wire harnesses.On Left : Female connector shapesOn Right : Male connector shapesNumbers indicate pin numbers.
[F] : Indicates connector colors. (Connectors with not indicated colors are white)
A 1
L PART NUMBER OF CONNECTORS
A/C Ambient Temp. Sensor
Code
90980–11070
Part Number
D 4 Diode (Courtesy)
Code
90980–11608
A 2 A/C Condenser Fan Motor 90980–11237 D 5 Diode (Interior Light) 90980–10962
A 3 A/C Condenser Fan Relay 90980–10940 D 6 Diode (Moon Roof) 90980–11608
A 4 A/C Condenser Fan Resistor 90980–10928
90980–11271
D 7 Door Lock Control Relay 90980–10848
A 5 A/C Magnetic Clutch
90980–11413
D 8 Door Lock Control SW LH90980–11148
A 6 A/T Oil Temp. Sensor
90980–11151
D 9 Door Lock Control SW RH
A 7 ABS Actuator
90980–11009
Door Courtesy SW LH90980–11097
A 8 ABS Actuator
90980–10941
Door Courtesy SW RH
A 9 ABS Speed Sensor Front LH
90980–11002
Door Courtesy SW Front LH
ABS Speed Sensor Front RH
90980–11856
Door Courtesy SW Front RH90980–11156
Airbag Sensor Front LH Door Courtesy SW Rear LH
Airbag Sensor Front RH Door Courtesy SW Rear RH
A10
A11
A12
A13 Airbag Squib 90980–11194 Door Key Lock and Unlock SW LH90980–11170
90980–11070
D10
D11
D12
D13
D14
D15
D16
D17 Door Key Lock and Unlock SW RH
Part NumberPart NamePart Name
[A] [B] [C]
SCION xB (EM0091U)
11
B
[A] : Part Code
[B] : Part Name
[C] : Part NumberToyota Part Number are indicated.
Not all of the above part numbers of the connector are established for the supply.
To Ignition SWIG Terminal
Fuse
VoltmeterSW 1
Relay
SW 2 Solenoid
[A]
[B]
[C]
Ohmmeter
SW
Ohmmeter
Diode
Digital Type Analog Type
12
SCION xB (EM0091U)
C TROUBLESHOOTING
VOLTAGE CHECK
(a) Establish conditions in which voltage is present at the checkpoint.
Example:[A] – Ignition SW on[B] – Ignition SW and SW 1 on[C] – Ignition SW, SW 1 and Relay on (SW 2 off)
(b) Using a voltmeter, connect the negative lead to a good groundpoint or negative battery terminal, and the positive lead to theconnector or component terminal.This check can be done with a test light instead of a voltmeter.
CONTINUITY AND RESISTANCE CHECK
(a) Disconnect the battery terminal or wire so there is no voltagebetween the check points.
(b) Contact the two leads of an ohmmeter to each of the checkpoints.
If the circuit has diodes, reverse the two leads and checkagain.When contacting the negative lead to the diode positive sideand the positive lead to the negative side, there should becontinuity.When contacting the two leads in reverse, there should be nocontinuity.
(c) Use a volt/ohmmeter with high impedance (10 kΩ/Vminimum) for troubleshooting of the electrical circuit.
To Ignition SWIG Terminal
Test Light
RelayLight
SW 2 Solenoid
Disconnect
Short [A]
DisconnectDisconnect
SW 1
Fuse Case
Short [B]
Short [C]
Pull Up
Press Down Press Down
Pull Up
SCION xB (EM0091U)
13
C
FINDING A SHORT CIRCUIT
(a) Remove the blown fuse and disconnect all loads of the fuse.
(b) Connect a test light in place of the fuse.
(c) Establish conditions in which the test light comes on.
Example:[A] – Ignition SW on[B] – Ignition SW and SW 1 on[C] – Ignition SW, SW 1 and Relay on (Connect the
Relay) and SW 2 off (or Disconnect SW 2)
(d) Disconnect and reconnect the connectors while watching thetest light.The short lies between the connector where the test lightstays lit and the connector where the light goes out.
(e) Find the exact location of the short by lightly shaking theproblem wire along the body.
CAUTION:(a) Do not open the cover or the case of the ECU unless
absolutely necessary. (If the IC terminals are touched,the IC may be destroyed by static electricity.)
(b) When replacing the internal mechanism (ECU part) ofthe digital meter, be careful that no part of your body orclothing comes in contact with the terminals of leadsfrom the IC, etc. of the replacement part (spare part).
DISCONNECTION OF MALE AND FEMALECONNECTORS
To pull apart the connectors, pull on the connector itself, notthe wire harness.
HINT : Check to see what kind of connector you aredisconnecting before pulling apart.
(mm)
Reference:
ToolUpExample:(Case 1)
Terminal Retainer
Terminal Retainer
[Retainer at Full Lock Position]
[Retainer at Temporary Lock Position]
StopperTerminalRetainer
SecondaryLocking Device
Example:(Case 2)
14
SCION xB (EM0091U)
C TROUBLESHOOTING
HOW TO REPLACE TERMINAL(with terminal retainer or secondary locking device)
1. PREPARE THE SPECIAL TOOL
HINT : To remove the terminal from the connector, pleaseconstruct and use the special tool or like object shown onthe left.
2. DISCONNECT CONNECTOR
3. DISENGAGE THE SECONDARY LOCKING DEVICE OR
TERMINAL RETAINER.
(a) Locking device must be disengaged before the terminallocking clip can be released and the terminal removed fromthe connector.
(b) Use a special tool or the terminal pick to unlock the secondarylocking device or terminal retainer.
NOTICE:Do not remove the terminal retainer from connector body.
[A] For Non–Waterproof Type Connector
HINT : The needle insertion position varies according to the
connector’s shape (number of terminals etc.), so
check the position before inserting it.
”Case 1”
Raise the terminal retainer up to the temporary lock
position.
”Case 2”
Open the secondary locking device.
ToolTab
Tab
TerminalRetainer
Access Hole( Mark)
Tool
Tool
[Female]
Example:
[Male]
(Case 1)
[Male] [Female]
Retainerat Full Lock Position
Retainerat Temporary Lock Position
Terminal Retainer
[Male] Press Down [Female]Press Down
ToolTool
Example:(Case 2)
SCION xB (EM0091U)
15
C
[B] For Waterproof Type Connector
HINT : Terminal retainer color is differentaccording to connector body.
Example:Terminal Retainer : Connector BodyBlack or White : GrayBlack or White : Dark GrayGray or White : Black
”Case 1”Type where terminal retainer is pulledup to the temporary lock position (PullType).
Insert the special tool into the terminalretainer access hole (Mark) and pullthe terminal retainer up to thetemporary lock position.
HINT : The needle insertion position variesaccording to the connector’s shape(Number of terminals etc.), so checkthe position before inserting it.
”Case 2”Type which cannot be pulled as far asPower Lock insert the tool straight intothe access hole of terminal retainer asshown.
Retainer atFull Lock Position
[Male] [Female]
Retainer atTemporary Lock Position
Locking Lug
Tool
16
SCION xB (EM0091U)
C TROUBLESHOOTING
Push the terminal retainer down to the temporary lock position.
(c) Release the locking lug from terminal and pull the terminal outfrom rear.
4. INSTALL TERMINAL TO CONNECTOR
(a) Insert the terminal.
HINT:1. Make sure the terminal is positioned correctly.2. Insert the terminal until the locking lug locks firmly.3. Insert the terminal with terminal retainer in the temporary lock
position.
(b) Push the secondary locking device or terminal retainer in tothe full lock position.
5. CONNECT CONNECTOR
∗ The titles given inside the components are the names of the terminals (terminal codes) and are not treated as beingabbreviations.
SCION xB (EM0091U)
17
ABBREVIATIONS D
ABBREVIATIONS
The following abbreviations are used in this manual.
A/C = Air Conditioning
A/T = Automatic Transaxle
ABS = Anti–Lock Brake System
CAN = Controller Area Network
CPU = Central Processing Unit
ECU = Electronic Control Unit
ESA = Electronic Spark Advance
IAC = Idle Air Control
IC = Integrated Circuit
INT = Intermittent
J/B = Junction Block
LCD = Liquid Crystal Display
LH = Left–Hand
O/D = Overdrive
PTC = Positive Temperature Coefficient
R/B = Relay Block
RH = Right–Hand
SFI = Sequential Multiport Fuel Injection
SRS = Supplemental Restraint System
SW = Switch
TEMP. = Temperature
TRAC = Traction Control
TVIP = TOYOTA Vehicle Intrusion Protection
VSC = Vehicle Stability Control
VSV = Vacuum Switching Valve
18
SCION xB (EM0091U)
E GLOSSARY OF TERMS AND SYMBOLS
BATTERYStores chemical energy andconverts it into electrical energy.Provides DC current for the auto’svarious electrical circuits.
GROUNDThe point at which wiring attaches tothe Body, thereby providing a returnpath for an electrical circuit; without aground, current cannot flow.
CAPACITOR (Condenser)A small holding unit for temporarystorage of electrical voltage.
HEADLIGHTSCurrent flow causes a headlightfilament to heat up and emit light. Aheadlight may have either a single(1) filament or a double (2) filament
1. SINGLE FILAMENT
CIGARETTE LIGHTERAn electric resistance heatingelement.
2. DOUBLE FILAMENT
CIRCUIT BREAKERBasically a reusable fuse, a circuitbreaker will heat and open if toomuch current flows through it.Some units automatically reset whencool, others must be manually reset.
HORNAn electric device which sounds aloud audible signal.
DIODEA semiconductor which allowscurrent flow in only one direction.
IGNITION COILConverts low–voltage DC currentinto high–voltage ignition current forfiring the spark plugs.
DIODE, ZENERA diode which allows current flow in onedirection but blocks reverse flow only upto a specific voltage. Above that potential,it passes the excess voltage. This acts asa simple voltage regulator.
LIGHTCurrent flow through a filamentcauses the filament to heat up andemit light.
PHOTODIODEThe photodiode is a semiconductorwhich controls the current flowaccording to the amount of light.
LED (LIGHT EMITTING DIODE)Upon current flow, these diodes emitlight without producing the heat of acomparable light.
DISTRIBUTOR, IIAChannels high–voltage current fromthe ignition coil to the individualspark plugs.
METER, ANALOGCurrent flow activates a magneticcoil which causes a needle to move,thereby providing a relative displayagainst a background calibration.
FUSEA thin metal strip which burns throughwhen too much current flows through it,thereby stopping current flow andprotecting a circuit from damage.
FUSIBLE LINK
METER, DIGITALCurrent flow activates one or manyLED’s, LCD’s, or fluorescentdisplays, which provide a relative ordigital display.
FUEL
FUSIBLE LINKA heavy–gauge wire placed in highamperage circuits which burns through onoverloads, thereby protecting the circuit.The numbers indicate the crosssectionsurface area of the wires.
(for Medium Current Fuse)
(for High Current Fuse or Fusible Link)
MOTORA power unit which convertselectrical energy into mechanicalenergy, especially rotary motion.
M
SCION xB (EM0091U)
19
E
RELAYBasically, an electrically operatedswitch which may be normallyclosed (1) or open (2).Current flow through a small coilcreates a magnetic field which eitheropens or closes an attached switch.
1. NORMALLY CLOSED
2. NORMALLY OPEN
SWITCH, MANUALOpens and closescircuits, thereby
SPEAKERAn electromechanical device whichcreates sound waves from currentflow.
RELAY, DOUBLE THROWA relay which passes currentthrough one set of contacts or theother.
Opens and closescircuits, therebystopping (1) orallowing (2) currentflow.
1. NORMALLY OPEN
2. NORMALLY CLOSED
RESISTORAn electrical component with a fixedresistance, placed in a circuit toreduce voltage to a specific value.
SWITCH, DOUBLE THROWA switch which continuously passescurrent through one set of contactsor the other.
RESISTOR, TAPPEDA resistor which supplies two ormore different non adjustableresistance values.
SWITCH, IGNITIONA key operated switch with severalpositions which allows variouscircuits, particularly the primaryignition circuit, to becomeoperational.
RESISTOR, VARIABLE or RHEOSTATA controllable resistor with a variablerate of resistance.Also called a potentiometer orrheostat.
operational.
SENSOR (Thermistor)A resistor which varies its resistancewith temperature.
SWITCH, WIPER PARKAutomatically returns wipers to thestop position when the wiper switchis turned off.
(Reed Switch Type)
SENSOR, SPEEDUses magnetic impulses to openand close a switch to create a signalfor activation of other components.
TRANSISTORA solidstate device typically used asan electronic relay; stops or passescurrent depending on the voltageapplied at ”base”.
SHORT PINUsed to provide an unbrokenconnection within a junction block.
WIRESWires are always drawn asstraight lines on wiringdiagrams.Crossed wires (1) without ablack dot at the junction are
(1) NOT CONNECTED
SOLENOIDAn electromagnetic coil which formsa magnetic field when current flows,to move a plunger, etc.
black dot at the junction arenot joined;crossed wires (2) with ablack dot or octagonal ( )mark at the junction arespliced (joined)connections.
(2) SPLICED
Engine RoomR/B
ABS R/B
Skid Control ECUwith Actuator
Fusible LinkBlock
20
SCION xB (EM0091U)
F RELAY LOCATIONS
[Engine Compartment]
SCION xB (EM0091U)
21
F
[Instrument Panel]
Airbag SensorAssembly
Engine ControlModule
InstrumentPanel J/B
Door ControlReceiver
Rear WindowDefogger Relay
Headlight Relay
Front Fog LightRelay
Fuse Block
Door LockControl Relay
A/C Amplifier
Shift LockControl SW
[Body]
Occupant Classification ECU
3 51
2
3 51
2
5
2
1
3
1
2
3 5
3 51
23 5
1
24
1
2
1
2
1
2
DO
ME
15A
15A
EFI
HO
RN
15A
15A
AM
2
ST
30A
*1
* 1:H-LP LH / H-LP LO LH* 2:H-LP RH / H-LP LO RH
*210A
10A
ST Relay
FAN NO.2 Relay FAN NO.1 Relay
EFI Relay
HORN Relay
50A HTR SUB1(for High Current)
HTR SUB1 Relay30A RDI(for High Current)
12
122
112
12
12
12
15ASPARE
30ASPARE
40A ABS NO.1(for High Current)
22
SCION xB (EM0091U)
F RELAY LOCATIONS
1 : Engine Room R/B Engine Compartment Left (See Page 20)
SCION xB (EM0091U)
23
F
Fusible Link Block Engine Compartment Left (See Page 20)
120A ALT(for High Current)
3 4 5
60A ABS(for High Current)
1
60A MAIN(for High Current)
2 : ABS R/B Engine Compartment Right (See Page 20)
12
3
53
ABS CUT Relay ABS MTR Relay
5
12
1
2
3456
3
21 4
56789
123
45 13
6789101112 114
3
21 5
678910
1
5
2
1
3
35
1 2
35
1 2
1
2
3456
12
3
456789
123
45
678910111213
12
34
567891011
1
HTR Relay
PWR Relay
FLSH Relay
C/OPN Relay
1
2
1
2
1
2
GAUGE
10A
ACC
15A
7.5A
A. C
7.5A
ECU-IG
WIPER
20A 7.5A
7.5A
OBD
ECU-B
25A
D/L
10A
10A
HAZ
STOP
10A
TAIL
15A
FOG
30A POWER(for High Current)
40A AM1(for High Current)
40A HTR(for High Current)
(from Floor Wire)
(from Floor Wire)
Gray
4(from Engine Room Main Wire)
(from Engine Room Main Wire)
(from Engine Room Main Wire)
1 2 3
4 5 6 7 8
Gray
1
2
30A DEF(for High Current)
1T
1C
1A
1B
1S
24
SCION xB (EM0091U)
F RELAY LOCATIONS
: Instrument Panel J/B Lower Finish Panel (See Page 21)
89
18 17
7
16
6
15
5
14
4
13
3
12
2
11
1
10
910
20 19
8
18
7
17
6
16
4
14
3
13
2
12
1
1115
55 4 3 2 110 9 8 7 6
3 2 1
45678912345
13 6789101112
5
10
4
9
3
8
2
7
1
6
4 3 2 1
10 9 8 7 6 57
14
6
13
5
12
4
11
3
10
2
9
1
8
123456789101112
1234
56789105678
1234
11
4 3 2 1
5678910
9
18
8
1716
76
1514
54
1312
32
11
1
10
3 4 5 6 7
13 14 15 16 17
2
12
1
11
8
18 19
9 10
201 2 3 4 56 7 8 9 10
987654
321
1 2 3 4 56 7 8 9 10 11 12 13
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18
109876
54321
1 2 3 4 5 6
7 8 9 10 11 12
1 2 3 45 6 7 8 9 10 11
1 2 3 4
5 6 7 8
7
1413
65
1211
43
109
21
8
1 2 3 4
5 6 7 8 9 101 2 3 4
5 6 7 8 9 10
Black
(from Instrument Panel Wire)
(from Instrument Panel Wire)
(from Instrument Panel Wire)
(from Instrument Panel Wire)
(from Instrument Panel Wire)
(from Instrument Panel Wire)
(from Instrument Panel Wire)
(from Instrument Panel Wire)
(from Instrument Panel Wire)
(from Instrument Panel Wire)
(from Instrument Panel Wire)
(from Instrument Panel Wire)
(from Instrument Panel Wire)
Yellow
10111213141517 16
123456789
18
1P
1G
1H
1E
1J
1K
1N
1O
1D
1F
1L
1M
1R
SCION xB (EM0091U)
25
F
(Cont. next page)
1A4 1F4
1G12
1K10
1F2
1M5
1R1
1G3
1P6
1R2
1G4
1L8
1D5
1O6
1G8
1G5
1L4
1M7
1R10
1B13
1S9
1J2
1N5
1P1
1F7
1K7
1H12
1P5
1P10
1D4
1P3
1E9
1H13
1H2
1P18
1G7
1P8
1H10
1G14
1O7
1H15
1G9
1H16
1G1
1H6
1G18
1H4
1G10
1H17
1F8
1S5
1L7
1N3
1B10
1B11
1A1
1N4
1S4
1G6
1S1
1A3
1O5
1H7
1S3
1A8
1A9
1M8
1R3
1B12
1M9
1F10
1R9
1K8
1K9
1T4
1B5
1D1
1B9
1B4
1H14
1S7
1G16
1B1
1B2
1T3
1D8
1D9
1E1
1P7
1E6
1E10
1R5
1E2
1E4
1G17
1E3
1P9
1H1
1P20
26
SCION xB (EM0091U)
F RELAY LOCATIONS
[Instrument Panel J/B Inner Circuit]
5
1
3
* 1:Before Dec. 2005 Production* 2:From Dec. 2005 Production
2
C/OPN Relay
3
2
5
1
4
1
3
2
5HTR Relay
PWR Relay
FLSH Relay
7
4
1
3
5
6
8
2
7.5A A. C 2 1
12
1 2
40A HTR
40A AM1
30A POWER
10A STOP
10A TAIL
25A D/L
7.5A ECU-B
7.5A OBD
10A HAZ
15A ACC
10A GAUGE
7.5A ECU-IG
20A WIPER
(Cont'd)
21 30A DEF
IG
LL
EL
ER
EHW
LR
GND
+B
1L12 1L5
1H3
1F6
1L13
1F1
1O1
1K6
1T6
1H9
1K11
1K3
1M2
1M6
1N10
1N11
1P13
1P14
1P15
1P16
1P17
1R4
1O8
1J8
1B8
1M4
1L10
1R6
1P4
1A6
1C1
1N8
1N1
1O3
1K12
1L6
1N6
1N9
1T1
1A5
1A2
1N7
1J3
1J5
1O4
1D10
1B3
1H11
1K2
1L11
1K4
1P19
1H5
1A7
1A11
1H8
1F12
1S6
1D3
1D2
1O2
1K1
1K5
1R7
1J6
1F11
1N2
1A10
1H18
1J9
1J7
1J1
1S2
1L1
1L2
1L9
1B7
1S8
1F14
1M3
1M1
1J4
1T5
1B6
1F9
1E5
1G13
1L3
1P11
1R8
1J10
15A FOG(*2)
(*1)
SCION xB (EM0091U)
27
F
28
SCION xB (EM0091U)
G ELECTRICAL WIRING ROUTING
Position of Parts in Engine Compartment
F6
C2
A5
H2
F2
F17
G2
G1
A2
F4
F5
H1
F1
F16(*2)
* 1:Before Dec. 2005 Production* 2:From Dec. 2005 Production
(*1)
(*1)
(*2)
A4
F3
H3E2 B1 B2 F8 F9 F7
C1C3 H5 A3 H4 A1E1
A 1 A/C Condenser Fan ResistorA 2 A/C Magnetic ValveA 3 A/T Indicator Light SW
Back–Up Light SWPark/Neutral Position SW
A 4 ABS Speed Sensor Front LHA 5 ABS Speed Sensor Front RH
B 1 Back–Up Light SWB 2 Brake Fluid Level Warning SW
C 1 Camshaft Position SensorC 2 Camshaft Timing Oil Control ValveC 3 Crankshaft Position Sensor
E 1 Electronically Controlled Transmission SolenoidE 2 Engine Coolant Temp. Sensor
F 1 Front Airbag Sensor LHF 2 Front Airbag Sensor RHF 3 Front Fog Light LHF 4 Front Fog Light RHF 5 Front Parking Light LH
Front Turn Signal Light LHF 6 Front Parking Light RH
Front Turn Signal Light RHF 7 Front Wiper MotorF 8 Fusible Link BlockF 9 Fusible Link BlockF 16 Front Airbag Sensor LHF 17 Front Airbag Sensor RH
G 1 GeneratorG 2 Generator
H 1 Headlight LHH 2 Headlight RHH 3 Heated Oxygen Sensor (Bank 1 Sensor 1)H 4 Horn (High)H 5 Horn (Low)
SCION xB (EM0091U)
29
G
Position of Parts in Engine Compartment
P2
S2
W1
S1
T2
T1
O1
S3
S4
I1
N1 I2P1 I3 I4 I5 V1 M1
I8I7I6 K1I9 S5 R1
I 1 Idle Air Control ValveI 2 Ignition Coil and Igniter No.1I 3 Ignition Coil and Igniter No.2I 4 Ignition Coil and Igniter No.3I 5 Ignition Coil and Igniter No.4I 6 Injector No.1I 7 Injector No.2I 8 Injector No.3I 9 Injector No.4
K 1 Knock Sensor (Bank 1)
M 1 Mass Air Flow Meter
N 1 Noise Filter (Ignition)
O 1 Oil Pressure SW
P 1 Power Steering Oil Pressure SensorP 2 Pressure Sensor
R 1 Radiator Fan Motor
S 1 Side Turn Signal Light LHS 2 Side Turn Signal Light RHS 3 Skid Control ECU with ActuatorS 4 StarterS 5 Starter
T 1 Throttle Position SensorT 2 Turbine Speed Sensor
V 1 VSV (Purge)
W 1 Washer Motor
30
SCION xB (EM0091U)
G ELECTRICAL WIRING ROUTING
Position of Parts in Instrument Panel
I10
C8
D3
C5
H6
F10
D1
F15
B3
B4
E3
E4
I11D4 I12 C6D2 I13I15 A18 A17 A14 A8A6 A12
A9
(*1)
A19
(*2)
C7 C9A13 A11
(*1)
* 1:Before Dec. 2005 Production* 2:From Dec. 2005 Production
A21
(*2)
A10
(*1)
A20
(*2)
C4 F11H7A7 E5 E6
A 6 A/C ThermistorA 7 A/T Shift Lever Illumination
O/D Main SWA 8 Air Inlet Servo MotorA 9 Airbag Sensor AssemblyA10 Airbag Sensor AssemblyA 11 Airbag Sensor AssemblyA12 Airbag Squib (Front Passenger’s Airbag Assembly)A13 Airbag Squib (Steering Wheel Pad)A14 Antenna AmplifierA17 A/C AmplifierA18 A/C AmplifierA19 Airbag Sensor AssemblyA20 Airbag Sensor AssemblyA21 Airbag Sensor Assembly
B 3 Blower MotorB 4 Blower Resistor
C 4 Cigarette LighterC 5 Clutch Start SWC 6 Combination MeterC 7 Combination SWC 8 Combination SWC 9 Combination SW
D 1 Data Link Connector 3D 2 Defroster Mode Detection SW
Inlet Air Position Detection SWD 3 Door Control ReceiverD 4 Door Lock Control Relay
E 3 Engine Control ModuleE 4 Engine Control ModuleE 5 Engine Control ModuleE 6 Engine Control Module
F 10 Front Fog Light RelayF 11 Front Fog Light SWF 15 Fuse Block
H 6 Headlight RelayH 7 Heated Oxygen Sensor (Bank 1 Sensor 2)
I 10 Ignition SWI 11 Integration Control and PanelI 12 Integration Control and PanelI 13 Integration Control and PanelI 15 Integration Control and Panel
SCION xB (EM0091U)
31
G
Position of Parts in Instrument Panel
J1
O2
N2
R5
R4
J5
J2V2 J3T4 J6 J7 R2 R3 R18 O4 J8 T5
P5S8J4T3R6 S7U1 Y1S6 P3S9O3
P15
J 1 Junction ConnectorJ 2 Junction ConnectorJ 3 Junction ConnectorJ 4 Junction ConnectorJ 5 Junction ConnectorJ 6 Junction ConnectorJ 7 Junction ConnectorJ 8 Junction Connector
N 2 Noise Filter (Rear Window Defogger No.1)
O 2 Option Connector (TVIP)O 3 Option Connector (IPOD Unit)O 4 Option Connector (Radio and Player)
P 3 Parking Brake SWP 5 PTC HeaterP15 Passenger Seat Belt Warning Lamp
R 2 Radio and PlayerR 3 Radio and PlayerR 4 Rear Window Defogger RelayR 5 Remote Control Mirror SWR 6 RheostatR18 Radio and Player
S 6 Shift Lock Control SWS 7 Steering SensorS 8 Stop Light SWS 9 Stereo Jack Adapter
T 3 TRAC OFF SWT 4 Tweeter LHT 5 Tweeter RH
U 1 Unlock Warning SW
V 2 VSC Buzzer
Y 1 Yaw Rate Sensor
32
SCION xB (EM0091U)
G ELECTRICAL WIRING ROUTING
Position of Parts in Body
D11
F12
J9
D8
B6
L1
D12F13 D10 I14 D6 H8 D14
A15D13B7
(*1)
B9
(*2)
* 1:Before Dec. 2005 Production* 2:From Dec. 2005 Production
D5D9J10 F14D7 B8
(*1)
B5C10 A16B10
(*2)
A15 ABS Speed Sensor Rear LHA16 ABS Speed Sensor Rear RH
B 5 Back Door Courtesy SWBack Door Lock Motor
B 6 Back Door Opener SWB 7 Buckle SW LH
Seat Position SensorB 8 Buckle SW RH
Occupant Detection SensorB 9 Buckle SW LH
Seat Position SensorB10 Buckle SW RH
C10 Canister Pump Module
D 5 Door Courtesy SW Front LHD 6 Door Courtesy SW Front RHD 7 Door Courtesy SW Rear LHD 8 Door Courtesy SW Rear RHD 9 Door Key Lock and Unlock SW Front LH
Door Lock Motor Front LHDoor Unlock Detection SW Front LH
D10 Door Key Lock and Unlock SW Front RHDoor Lock Motor Front RH
D11 Door Lock Control SW Front LHPower Window Master SW
D12 Door Lock Control SW Front RHD13 Door Lock Motor Rear LHD14 Door Lock Motor Rear RH
F 12 Front Door Speaker LHF 13 Front Door Speaker RHF 14 Fuel Pump
Fuel Sender
H 8 High Mounted Stop Light
I 14 Interior Light
J 9 Junction ConnectorJ 10 Junction Connector
L 1 License Plate Light
SCION xB (EM0091U)
33
G
Position of Parts in Body
R16
P9
R13
R12
R8
N4
R10
N3
R14
R17O5O6O7O9 P10 P6 O8 O10 P14 P8 P12 R15
P7P13 R11P11 R9 R7
N 3 Noise Filter (Fuel Pump)N 4 Noise Filter
(Stop Light and Rear Window Defogger No.2)
O 5 Occupant Classification ECUO 6 Occupant Classification ECUO 7 Occupant Classification Sensor Front LHO 8 Occupant Classification Sensor Front RHO 9 Occupant Classification Sensor Rear LHO10 Occupant Classification Sensor Rear RH
P 6 Power Window Control SW Front RHP 7 Power Window Control SW Rear LHP 8 Power Window Control SW Rear RHP 9 Power Window Motor Front LHP10 Power Window Motor Front RHP 11 Power Window Motor Rear LHP12 Power Window Motor Rear RHP13 Pretensioner LHP14 Pretensioner RH
R 7 Rear Combination Light LHR 8 Rear Combination Light RHR 9 Rear Side Marker Light LHR10 Rear Side Marker Light RHR11 Rear Speaker LHR12 Rear Speaker RHR13 Rear Window DefoggerR14 Rear Window DefoggerR15 Rear Wiper MotorR16 Remote Control Mirror LHR17 Remote Control Mirror RH
Engine Wire
Sensor Wire
Engine RoomMain Wire
EB1
ECED
EA1
EBEA
34
SCION xB (EM0091U)
G ELECTRICAL WIRING ROUTING
: Location of Connector Joining Wire Harness and Wire Harness: Location of Ground Points
SCION xB (EM0091U)
35
G
: Location of Connector Joining Wire Harness and Wire Harness
A/C SubWire
Front DoorRH Wire
Front DoorLH Wire
Floor Wire
IA3 IE1
ID1 Engine WireFloor Wire
IC1
InstrumentPanel Wire
IC2
Engine RoomMain Wire
IB1
IB2
IA2 IA1 IF2
IG2
IF1
IG1
IH1
: Location of Ground Points
IG
IE IF
Rear Door No.1LH Wire
Rear DoorNo.1 RH Wire
Back DoorNo.1 Wire
Front DoorLH Wire
BC1
BE1
BI
BD1
BL
Lamp Wire
BA1
BHFloor Wire
BK BC2Front DoorRH Wire
BB1
Rear WindowNo.2 Wire
Rear WindowNo.1 Wire
BJ BM
36
SCION xB (EM0091U)
G ELECTRICAL WIRING ROUTING
: Location of Connector Joining Wire Harness and Wire Harness: Location of Ground Points
38
SCION xB (EM0091U)
Power Source
60A
MA
IN
60A
AB
S
120A
ALT
B1 A3A4
1 2
15A EFI
1 2
15A DOME
1 2
15A HORN
30A ST
21
1 2
10A H–LP LH/H–LP LO LH
1 2
10A H–LP RH/H–LP LO RH
1 2
15A AM2
1
1 2
50A HTR SUB1
1
1
1 1O
7 1A
Battery
1
B
B–R
B–L
B–L
B
B–G
B–G
W–R
W–R
G 2
A5
BS
kid
Con
trol E
CU
with
Act
uato
r
1
1
1
1
1
1
B
B–R
B–W
G–W
L–Y
B–Y
1R
1 2
30A RDI
1L–W
B
F 8(A), F 9(B)
1 2
40A ABS NO. 1
1B
Fusible Link Block
Gen
erat
or
SCION xB (EM0091U)
39
1C1 1 2
40A HTR
1 2
30A POWER
25A D/L
7. 5A ECU–B
10A HAZ
10A TAIL
7. 5A OBD
1 2
40A AM1
1O8
15A ACC
7. 5A ECU–IG
1O3
1O4
1
5
3
2
6
4
AM2
AM1
ACC
IG1
IG2
ST2
10A GAUGE
20A WIPER
1
30A DEF
2
W–B
1
5
2
3
4
7. 5A A. C
IE
1O2
10A STOP
B–G
W–R
HTR Relay
W–L
L–R
B–Y
B
B
I10Ignition SW 1J8
3
1
5
2
1K3
1 27. 5A I/UPIB26 B–YB
W–BR–B
B–R
B–R
W–B
B
Fuse BlockF15
Rear WindowDefogger Relay
R 4
15A FOG
40
SCION xB (EM0091U)
Power Source
: Parts Location
Code See Page Code See Page Code See Page
F8 A 28 F15 30 I10 30
F9 B 28 G2 28 R4 31
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1A24 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
1C24 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
1J
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1K 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1O
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IB2 35 Floor Wire and Instrument Panel Wire (Behind the Reinforcement LH)
: Ground Points
Code See Page Ground Points Location
IE 35 Left Kick Panel
SCION xB (EM0091U)
41
Memo
42
SCION xB (EM0091U)
Starting and Ignition60
A M
AIN
3
1
2
1
1
15AAM2
30AST
2
1
1O1
1A7
51A3
1O6
1E6
1O7
1
15
23
M
B1
B–L
A1
EA15
1
B–Y1
EB
1
1
P
N
9
B
6
B–R
B(A/T)
B–W
STRelay
BB
B–R
W–B
W–R
W–R
B
B
B–R
B–Y
(A/T)
B–Y
(M/T)
B–Y
B–Y
( A/T
)
A 3
B–Y
F 8
6
4
AM2 IG2
ST2
I10
Bat
tery
12
1
2
EA1
(M/T)
S 4(A), S 5(B)
C 5
B( A
/T)
B
(M/T)
B
B–YB–Y
(M/T) (M/T)
EA115
B
B
( A/T
)
(A/T)
IF113
1EA1
Par
k/N
eutra
lP
ositi
on S
WClu
tch
Sta
rt S
W
Fusi
ble
Link
Blo
ck
Ignition SW
Starter
IF24
B( A
/T)
IF211
B–Y
( A/T
)
B–Y
( M/T
)
SCION xB (EM0091U)
43
EA111
C23C17
ED
1
4 3 2
I 2
1
2 3 4
I 3
1
2 3 4
I 4
1
2 4 3
I 5
C16 C15 C14
A12
1
B–Y
B–Y
E 3(A), E 5(C)
B–R
B–R B–R B–R
Y Y
W–B
B–R
B–R
B–R
B–R
Y
G–B
W–B Y
G–O
W–B
W–B
G–Y
G–O
G–B
G–Y
N 1
STA
IGT2 IGT3 IGT4
B–R
B–R
Y
G–R
W–B
Y
W
Y
G–R
W–B
IGT1 IGF
W–B
B–R
A30
NSW
B(A/T) B
(A/T)
Engine Control Module
Ignition Coil andIgniter No. 1
Ignition Coil andIgniter No. 2
Ignition Coil andIgniter No. 3
Ignition Coil andIgniter No. 4
Noi
se F
ilter
( Igni
tion)
44
SCION xB (EM0091U)
Starting and Ignition
: Parts Location
Code See Page Code See Page Code See Page
A3 28 I2 29 N1 29
C5 30 I3 29 S4 A 29
E3 A 30 I4 29 S5 B 29
E5 C 30 I5 29
F8 28 I10 30
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1A 24 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
1E25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1O25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
EA1 34 Engine Wire and Engine Room Main Wire (Inside of Engine Room R/B)
IF135 Engine Wire and Instrument Panel Wire (Behind the Glove Box)
IF235 Engine Wire and Instrument Panel Wire (Behind the Glove Box)
: Ground Points
Code See Page Ground Points Location
EB 34 Front Left Fender Apron
ED 34 Engine Block
SCION xB (EM0091U)
45
Memo
46
SCION xB (EM0091U)
Charging
LBP
F
3 A
IG
2 A
5 1E
10AGAUGE
60A
MA
IN
120A
ALT
15AAM2
1
1
2
1
7 1A
1 1O
1 A1
24
B
IF1
M
IC Regulator
8 1G
6 1O
L
R–B
B–R
B–R
Y
10
IF14
E
B–R
F 8(
A), F
9( B
)
A3 B1
Battery
B
W–R
W–R
B–L
ALT
ALTY
R–B
L
LG
–B
A18
5 6
I10
B L IG M
9
E
AM2 IG2
ST2
E 5
IF111
G 1(A), G 2(B)
16
40
C 6
Cha
rge
Com
bina
tion
Met
er
Eng
ine
Con
trol
Mod
ule
Fusi
ble
Link
Blo
ck
Generator
Ignition SW
A/C
Am
plifi
er
(IG)
SCION xB (EM0091U)
47
: Parts Location
Code See Page Code See Page Code See Page
A18 30 F8 A 28 G2 B 28
C6 30 F9 B 28 I10 30
E5 30 G1 A 28
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1A 24 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
1E
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1G 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1O
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IF1 35 Engine Wire and Instrument Panel Wire (Behind the Glove Box)
74
SCION xB (EM0091U)
Front Wiper and WasherM
IST
OFF INT
LO HI
Off
On
20AWIPER
1N71A2 1A5
IA12
2
1
EA
IA16IA111IA110
M
11 1N
1O2
IE
4 1 3 2
W
EW
+S
+1
+2
+B
4
5
6
7
9
8
5
B
GR–B
B B B
G
W–B
W–B
W–B
B–R GR
GR
–B B
B–R GR
GR
–B
W–B
G
Washer SW
Front Wiper SW
Wiper Relay
W 1
+2 +1 S +
E
F 7
C 9
B
B–W
Combination SW
Front Wiper Motor
Was
her
Mot
or
(IG)
M
SCION xB (EM0091U)
75
With the ignition SW turned on, the current flows to TERMINAL 8 of the front wiper and washer SW, TERMINAL 2 of thewasher motor and TERMINAL 2 of the front wiper motor through the WIPER fuse.
1. Low Speed PositionWith the front wiper SW turned to LO position, the current flows from TERMINAL 8 of the front wiper and washer SW toTERMINAL 7 to TERMINAL 1 of the front wiper motor to TERMINAL 5 to GROUND and causes the front wiper motor to runat low speed.
2. High Speed PositionWith the front wiper SW turned to HI position, the current flows from TERMINAL 8 of the front wiper and washer SW toTERMINAL 9 to TERMINAL 4 of the front wiper motor to TERMINAL 5 to GROUND and causes the front wiper motor to runat high speed.
3. INT PositionWith the front wiper SW turned to INT position, the wiper relay operates and current flows from TERMINAL 8 of the frontwiper and washer SW to TERMINAL 5 to GROUND. This activates the intermittent circuit and the current flows fromTERMINAL 8 of the front wiper and washer SW to TERMINAL 7 to TERMINAL 1 of the front wiper motor to TERMINAL 5 toGROUND and the wiper operates. Intermittent operation is controlled by a condenser charge and discharge function in therelay.
4. Mist PositionWith the front wiper SW turned to MIST position, the current flows from TERMINAL 8 of the front wiper and washer SW toTERMINAL 7 to TERMINAL 1 of the front wiper motor to TERMINAL 5 to GROUND and causes the front wiper motor to runat low speed.
5. Washer Interlocking OperationWith the washer SW pulled to ON position, the current flows from the WIPER fuse to TERMINAL 2 of the washer motor toTERMINAL 1 to TERMINAL 4 of the front wiper and washer SW to TERMINAL 5 to GROUND and causes the washer motorto run and the window washer to spray. Simultaneously, current flows from the WIPER fuse to TERMINAL 8 of the front wiperand washer SW to TERMINAL 7 to TERMINAL 1 of the front wiper motor to TERMINAL 5 to GROUND, causing the wiper tofunction.
: Parts Location
Code See Page Code See Page Code See Page
C9 30 F7 28 W1 29
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1A 24 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
1N25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1O25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA1 35 Engine Room Main Wire and Instrument Panel Wire (Behind the Reinforcement LH)
: Ground Points
Code See Page Ground Points Location
EA 34 Front Right Fender Apron
IE 35 Left Kick Panel
System Outline
76
SCION xB (EM0091U)
Rear Wiper and Washer
20AWIPER
1T1 1A2
3
2
1 IA1
M
Combination SWC 9
2 53
IB22
B B
W 1
B L
L
W–L
L
W–L
W–B
W–L
W–B
W–B
2
1
5 BC1
BC16
IE
Washer Motor
Rea
r W
iper
Mot
orR
15
1N11
1O2
Washer2
ON
OFF
Washer1
Rea
r W
iper
and
Was
her
SW
(IG)
M
SCION xB (EM0091U)
77
When the ignition SW is turned on, current flows to TERMINAL 2 of the washer motor, TERMINAL 1 of the rear wiper motorthrough the WIPER fuse.
1. Rear Wiper Normal OperationWith the ignition SW turned on and rear wiper and washer SW turned to ON position, current flows to TERMINAL 1 of therear wiper motor to TERMINAL 2 of the rear wiper and washer SW to TERMINAL 5 to GROUND. Causing the rear wipermotor operated.
2. Washer OperationWith the ignition SW turned on and the rear wiper and washer SW turned to ON position, when the wiper SW is turnedfurther (ON+ washer position), current flows to TERMINAL 2 of the washer motor to TERMINAL 3 to TERMINAL 3 of therear wiper and washer SW to TERMINAL 5 to GROUND so that the washer motor rotates and the window washer emits awater, only while the switch is fully turned.When the wiper SW is off and then turned to washer position (Wiper off side), only the washer operates.
: Parts Location
Code See Page Code See Page Code See Page
C9 30 R15 33 W1 29
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1A 24 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
1N25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1O25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1T 24 Floor Wire and Instrument Panel J/B (Lower Finish Panel)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA1 35 Engine Room Main Wire and Instrument Panel Wire (Behind the Reinforcement LH)
IB2 35 Floor Wire and Instrument Panel Wire (Behind the Reinforcement LH)
BC1 36 Back Door No.1 Wire and Floor Wire (Right Rear Side Quarter Pillar)
: Ground Points
Code See Page Ground Points Location
IE 35 Left Kick Panel
System Outline
78
SCION xB (EM0091U)
Power Window
4 5
M
10AGAUGE
30APOWER
2 3
1 5
1O2 1L2 1S2 1L1
IC11
431 9
7
W–B
IC17
P 9
R–L
G–W
PWRRelay
W–B
L–W L
LW
–B
W–B
L L
L
L
L
L–W
2
IE
W–B
6D11Power Window Master SW
Power Window Motor Front LH
C
C
B
C
W–B
J10JunctionConnector
B B
JunctionConnector
J10
E E DDDU
Down
Front LHB
IC
B
(BAT)(IG)
SCION xB (EM0091U)
79
Dow
n
Up
5 2
3 1
R G
P10
SU SD
U D
P 6
2 1
M
2 1
M
4
IG14 IG12
Dow
n
Up
5 2
3 1
R G
P12
SU SD
U D
P 8
B44 B
P 7DU
SDSU
P11
GR
13
25
Up
Dow
n10 1613
L
4 IC1 IC12 ID12 ID11 ID14 ID13
IG11 BB14 BB13
M
5
B4
BA14 BA13
R–L
G–W R–Y
G–Y
R–B
G–B
R–B
G–B
BA1
R–B
G–B LL
L–W
L
L–W
R–L
G–W
121518
G–Y
R–Y
G–WR–L
5 5
L
R–B
G–B
BB1
D11Power Window Master SW
Pow
er W
indo
w C
ontro
l SW
Fron
t RH
Pow
er W
indo
w C
ontro
l SW
Rea
r LH
Pow
er W
indo
w C
ontro
l SW
Rea
r R
H
Power Window MotorFront RH
Power Window MotorRear LH
Power Window MotorRear RH
PU PD RLU RLD RRU RRD
Normal
Lock
Front RH Rear LH Rear RH
Window Lock SW
80
SCION xB (EM0091U)
Power Window
When the ignition SW is turned on, the current flows from the GAUGE fuse through the PWR relay to GROUND, thus thePWR relay is turned on and the current flows through the POWER fuse to TERMINAL 5 of the PWR relay to TERMINAL 3 toTERMINAL B of the power window master SW and TERMINAL B of the power window control SW front RH, Rear LH andRH.
1. Manual Operation (Power Window Master SW)When the power window master SW (Driver’s) is pushed down one step, the current flows from TERMINAL B of the powerwindow master SW to TERMINAL DD to TERMINAL 5 of the power window motor front LH to TERMINAL 4 to TERMINALDU of the power window master SW to TERMINAL E to GROUND, and the motor rotates to open the window. When thepower window master SW is pulled up one step, the current flows from TERMINAL B of the power window master SW toTERMINAL DU to TERMINAL 4 of the power window motor front LH to TERMINAL 5 to TERMINAL DD of the power windowmaster SW to TERMINAL E to GROUND, and the motor rotates in the opposite direction from open and closes the window.All the other windows are opened/closed by operating the respective power window master SW. When the window lock SWis pushed to the lock side, the ground circuit to the passenger’s window becomes open. As a result, even if Open/Closeoperation of the passenger’s window is attempted, the current from TERMINAL E of the power window master SW is notgrounded and the motor does not rotate, so the passenger’s window can not be operated and window lock occurs.
2. Auto Down Operation (Driver’s Window)When the power window master SW (Driver’s) is pushed down two steps, the power window master SW determines that it isAUTO operation and the current flows from TERMINAL B of the power window master SW to TERMINAL DD to TERMINAL5 of the power window motor front LH to TERMINAL 4 to TERMINAL DU of the power window master SW to TERMINAL E toGROUND. Because the hold circuit inside the power window master SW keeps the relay on the down side activated, thepower window motor continues operating even if the power window master SW is released. When the driver’s window is fullyopened, the hold circuit turns off and the relay on the down side turns off, and auto down operation is completed.
3. Stopping of Auto Down Operation (Driver’s Window)When the power window master SW (Driver’s) is pulled to the up side during auto down operation, a ground circuit opens inthe power window master SW and current does not flow from TERMINAL DU of the power window master SW to TERMINALE, so the motor stops, causing auto down operation to stop. If the power window master SW is pulled continuously, the motorrotates in the up direction in manual up operation.
4. Manual Operation (Power Window Control SW Front RH, Rear LH and RH)With the power window control SW (Front RH, rear LH or RH) pulled to the up side, current flows from TERMINAL B of thepower window control SW to TERMINAL U to power window motor to TERMINAL D of the power window control SW toTERMINAL SD to TERMINAL PD, RLD or RRD of the power window master SW to TERMINAL E to GROUND and rotatesthe power window motor (Front RH, rear LH or RH) in the up direction. Up operation continues only while the power windowcontrol SW is pulled to the up side. When the window descends, the current flowing to the motor flows in the oppositedirection, and the motor rotates in reverse. When the window lock SW is pushed to the lock side, the ground circuit to thepassenger’s window becomes open. As a result, even if Open/Close operation of the passenger’s window is attempted, thecurrent from TERMINAL E of the power window master SW is not grounded and the motor does not rotate, so thepassenger’s window can not be operated and window lock occurs.
: Parts Location
Code See Page Code See Page Code See Page
D11 32 P7 33 P10 33
J10 32 P8 33 P11 33
P6 33 P9 33 P12 33
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1L25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1O25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1S 24 Floor Wire and Instrument Panel J/B (Lower Finish Panel)
System Outline
SCION xB (EM0091U)
81
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IC1 35 Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
ID1 35 Front Door LH Wire and Floor Wire (Left Kick Panel)
IG1 35 Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
BA1 36 Rear Door No.1 LH Wire and Floor Wire (Center Pillar LH)
BB1 36 Rear Door No.1 RH Wire and Floor Wire (Center Pillar RH)
: Ground Points
Code See Page Ground Points Location
IE 35 Left Kick Panel
82
SCION xB (EM0091U)
Door Lock Control
9 IC2
10 1L
25AD/L
W–B
G–B
W–B
BR
–Y
G–B
BR
–Y
W–B
W–B
8 IC2
W–B
J 2(
A), J
3( B
)
IE
7 IC1 8 IG1
3
BR
–Y
G–B
Lock
Unl
ock
D12
W–B
3
6 5
BR
–Y
G–B
Lock
Unl
ock
D11 1
5 8
E
B B
B AE AB A E A
E B
B L1
8 IG2
D 4
9 IG2
12
L–W
BR
–Y
G–B
1 18 19
UL1
BR–Y
G–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
Door Lock Control Relay
Doo
r Lo
ck C
ontro
l SW
Fron
t LH
Doo
r Lo
ck C
ontro
l SW
Fron
t RH
Junc
tion
Con
nect
or
CC
1P19
1L13
1
2
1P16
Y
8
Y
KSW
W–B
1O2
W–B
W–B
Unl
ock
War
ning
SW
U 1
(BAT)
C
CJunctionConnector
J10
SCION xB (EM0091U)
83
564
W–B
5 IC2 11 IC2 10 IC2 6 IC15 IC1
D 9
21
M
216
3
ACTDUL3
D 4
L–O
Unl
ock
Lock
11
L–R
Y–B
Y–G
L–R
Y–B
L–W
Y–G L–O
L–W
Y–G L–O
L–R
Y–B
Unl
ock
Det
ectio
n
LSWD
W–B
B
UL2
BL–W
J 8
L–W
22 20
L–W
D10
L–O
L–O
L–R
B
L–R
L2
L–B
L–W
L–B
6 IG1
21
5
65
M
4
Unl
ock
Lock
L–R
L–W
L–B
IG1
L–O
W–B
IG210IG211
Door Lock Control Relay
Door Key Lock and Unlock SW Front LHDoor Lock Motor Front LHDoor Unlock Detection SW Front LH
Door Key Lock and Unlock SW Front RHDoor Lock Motor Front RH
Junc
tion
Con
nect
or
84
SCION xB (EM0091U)
Door Lock Control
M
BB1BA1
PCTY
R–W
7
4 1L
3 1S
R–W
L–O
1
1
D 6
1
D 4
ACT–
L–B
L–B
L–O
L–O
2
L–B
2
L–O
BB1
L–B
D 7
1
L–O
L–O
IB24IB21
L–B
L–O
R–W
L–B
L–B
L–O
2 BA1
R
1 1 2
1
D13 D14
L–O
L–B
1S1
1L8
523
1
D 5
R–W
R–W
D 8
R
DCTYACT+
CAAC
CAC
J 8
R–W R–W R–W
Door Lock Control Relay
Doo
r C
ourte
sy S
WFr
ont L
H
Doo
r C
ourte
sy S
WFr
ont R
H
Doo
r C
ourte
sy S
WR
ear
LH
Doo
r C
ourte
sy S
WR
ear
RH
Door LockMotor Rear LH
Door Lock MotorRear RH
Junc
tion
Con
nect
or
M
SCION xB (EM0091U)
85
V–W
4 BC1
R–W
M
2 3
1 4
BC13
IB213
L–Y
BACT
L–Y
10L–
Y
R–W
BL
1
2
BC21
IB25
BR
–Y
BDSU
BR
–Y
17
BR
–Y
W–B
B 5
B 6
W–B
W–B
W–B
W–B
3
IB112
W–R
BKL
W–R
16
W–R
B 7
BF
ADJ
6(A)
, J 7
( B)
SPD
V–W
9
1K4
1F6
D 4
V–W
Bac
k D
oor
Cou
rtesy
SW
Bac
k D
oor
Lock
Mot
or
Bac
k D
oor
Ope
ner
SW
Buc
kle
SW
LH
Door Lock Control Relay
Junc
tion
Con
nect
or
26
R–B
R–B
IG
LBE–
7
R–B
Airbag SensorAssembly
A 9
1
∗ 2 : From Dec. 2005 Production∗ 1 : Before Dec. 2005 Production
( ∗1)
5
W–R
Buckle SW LHB 9
( ∗2)
( ∗1)
Seat Position Sensor
(∗2)BC(∗1)AB
(∗1)AB(∗2)BC
Junc
tion
Con
nect
or
J 4(
A), (
B)(∗2)BD(∗1)AD
(∗1)AD(∗2)BD
Junc
tion
Con
nect
or
J 4(
A), (
B)
86
SCION xB (EM0091U)
Door Lock Control
V–W
10AGAUGE
1G13
15ADOME
1
1A4
1G12
Spe
edom
eter
29 28
23 1
IA113
V–W
W–R
W–R
L–Y
L–Y
R–B
S 3
SP1
12
C 6
2C
ombi
natio
n M
eter
Ski
d C
ontro
l EC
Uw
ith A
ctua
tor
1L3
R–B
R–B
CPU
IF
21
BR
BR
(BAT)(IG)
SCION xB (EM0091U)
87
The current always flows to TERMINAL 1 of the door lock control relay through the D/L fuse.
1. Manual Lock OperationWhen the door lock control SW or door key lock and unlock SW are operated to LOCK position, a lock signal is input toTERMINAL 18 or 20 of the door lock control relay and causes the door lock control relay to function. The current flows fromTERMINAL 1 of the door lock control relay to TERMINAL 2 to the door lock motors to TERMINALS 3 and 11 of the door lockcontrol relay to TERMINAL 12 to GROUND and the door lock motors locks the door.
2. Manual Unlock OperationWhen the door lock control SW or door key lock and unlock SW are operated to UNLOCK position, an unlock signal is inputto TERMINAL 19, 21 or 22 of the door lock control relay and causes the door lock control relay to function. The current flowsfrom TERMINAL 1 of the door lock control relay to TERMINALS 3 and 11 to the door lock motors to TERMINAL 2 of the doorlock control relay to TERMINAL 12 to GROUND and the door lock motors unlocks the door.
3. Double Operation Unlock OperationWhen the door key lock and unlock SW front LH is turned to the unlock side, only the driver’s door is unlocked. By turningthe door key lock and unlock SW front LH to the unlock side, a signal is input to TERMINAL 21 of the door lock control relay,and if the signal is input again within 3 seconds by turning the SW to the unlock side again, current flows from TERMINAL 11of the door lock control relay to the door lock motors to TERMINAL 2 of the door lock control relay to TERMINAL 12 toGROUND, causing all the other doors are unlocked.
: Parts Location
Code See Page Code See Page Code See Page
A9 30 D7 32 J3 B 31
B5 32 D8 32J4
A 31
B6 32 D9 32J4
B 31
B7 32 D10 32 J6 A 31
B9 32 D11 32 J7 B 31
C6 30 D12 32 J8 31
D4 30 D13 32 J10 32
D5 32 D14 32 S3 29
D6 32 J2 A 31 U1 31
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1A 24 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
1F
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1G
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1K
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1L
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1O
1P
1S 24 Floor Wire and Instrument Panel J/B (Lower Finish Panel)
System Outline
88
SCION xB (EM0091U)
Door Lock Control
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA1 35 Engine Room Main Wire and Instrument Panel Wire (Behind the Reinforcement LH)
IB135 Floor Wire and Instrument Panel Wire (Behind the Reinforcement LH)
IB235 Floor Wire and Instrument Panel Wire (Behind the Reinforcement LH)
IC135 Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
IC235 Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
IG135 Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
IG235 Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
BA1 36 Rear Door No.1 LH Wire and Floor Wire (Center Pillar LH)
BB1 36 Rear Door No.1 RH Wire and Floor Wire (Center Pillar RH)
BC136 Back Door No.1 Wire and Floor Wire (Right Rear Side Quarter Pillar)
BC236 Back Door No.1 Wire and Floor Wire (Right Rear Side Quarter Pillar)
: Ground Points
Code See Page Ground Points Location
IE 35 Left Kick Panel
IF 35 Instrument Panel Brace LH
BL 36 Back Door Center
SCION xB (EM0091U)
89
Memo
90
SCION xB (EM0091U)
Wireless Door Lock Control
10 1L
25AD/L
10AGAUGE
1L3
564
W–B
W–B
W–B
5 IC2 11 IC2 10 IC2 6 IC15 IC1
D 9
21
M
IE
216
7 IC1
3
EB ACTDUL3
D 4
L–O
Unl
ock
Lock
1112
L–R
Y–B
Y–G
L–R
Y–B
L–W
Y–G L–O
L–W
Y–G L–O
L–R
Y–B
R–B
L–W
26 1
IG
W–B
Unl
ock
Det
ectio
n
W–B
LSWD
Door Lock Control Relay
Door Key Lock and Unlock SW Front LHDoor Lock Motor Front LHDoor Unlock Detection SW Front LH
L–W
W–B
C
C
W–B
JunctionConnector
J10
R–B
(BAT) (IG)
∗ 2 : From Dec. 2005 Production∗ 1 : Before Dec. 2005 Production
(∗2)BC(∗1)AB
(∗1)AB(∗2)BC
JunctionConnector
J 4(A), (B)
SCION xB (EM0091U)
91
8 IG1
D 4
W–B
W–B
B
UL2
BL–W
J 8
L–W
22 20L–
W
D10
L–O
L–R
B
L–R
L2L–
W
L–B
6 IG1
21
5
65
M
4
Unl
ock
Lock
L–R
L–W
L–B
IG1
L–O
IG210IG211
Door Lock Control Relay
Door Key Lock and Unlock SW Front RHDoor Lock Motor Front RH
Junc
tion
Con
nect
or
M
BB1BA1
L–O
1
ACT–
L–B
L–B
L–O
L–O
2
L–B
2
L–O
BB1
L–B
L–O
L–O
IB24IB21
L–B
L–O
L–B
L–B
L–O
2 BA1
1 1 2
1
D13 D14
L–O
L–B
23
ACT+
CAAC
CAC
J 8
Door LockMotor Rear LH
Door Lock MotorRear RH
Junc
tion
Con
nect
or
M
L–O
W–B
92
SCION xB (EM0091U)
Wireless Door Lock Control
4 BC1
PCTY
R–W
7
4 1L
3 1S
R–W
1
D 6
1
D 4
D 7
1
R–W
R
1S1
1L8
5
1
D 5
R–W
R–W
D 8
R
DCTY
R–W
M
2 3
1 4
BC13
L–Y
L–Y
R–W R–W R–W
BL
W–B
B 5
W–B
W–B
W–B
Bac
k D
oor
Cou
rtesy
SW
Bac
k D
oor
Lock
Mot
or
Door Lock Control Relay
Doo
r C
ourte
sy S
WFr
ont L
H
Doo
r C
ourte
sy S
WFr
ont R
H
Doo
r C
ourte
sy S
WR
ear
LH
Doo
r C
ourte
sy S
WR
ear
RH
IB213
BACT
L–Y
10
SCION xB (EM0091U)
93
IB23
LP
R–Y
4
1
2
Y
KSW
Y
8
U 1
W–B
1A4
1S5
1P16
D 4Door Lock Control Relay
Unl
ock
War
ning
SW
15ADOME
1
1
2
OFF
ON
DO
OR
L–Y
R–Y
L–Y
1L7
5
L–Y
RDA
L
25
PRG
V
24
2 3
+B RDA PRG
1L13
1P19
Door Control ReceiverD 3
Inte
rior
Ligh
tI1
4
2
1
W–B
1P15
1O2
IE
W–B
GND
G–O
HAZ
G–O
15
1H1
1G10
8
EHW
1J4
FLSH Relay
(BAT)
94
SCION xB (EM0091U)
Wireless Door Lock Control
D 4Door Lock Control Relay
HORN
W–R
23
1
1
15AHORN
1
G–W
2
2 3
1 5
IA14
1
1
1 1
G–R
G–R
G–W
W–R
Horn(Low)
H 5Horn(High)
H 4
W–R
HORNRelay
JunctionConnector
J 4(A), (B)
HRLY
R
13
10AH–LP RH/H–LP LO RH
1
B
2
B
1 2
3
IA25
2 5
1 3
1A9
B–W
1A8
1M7
IG
W–B
B–Y
AB
BB
HeadlightRH
H 2
JunctionConnector
J 6(A), J 7(B)
H 6HeadlightRelay
B–W
B
B–R
1 2
3
B–W B–Y
HeadlightLH
H 1
10AH–LP LH/H–LP LO LH
1
2
R
B–W
(BAT)
(BAT)(BAT)
∗ 2 : From Dec. 2005 Production∗ 1 : Before Dec. 2005 Production
(∗2)BB(∗1)AC
(∗1)AC(∗2)BB
SCION xB (EM0091U)
95
Door lock control (Lock and unlock) and panic control (Theft alarm and flash) is performed by remote control, without theignition SW at OFF, using low–power electrical waves emitted by a transmitter.
1. Wireless Door Lock or Unlock Normal OperationWith the ignition SW at OFF (Unlock warning SW off) and all the doors completely closed, when the lock or unlock button(Transmitter) is pushed, the wireless door lock control receiver receives the electrical waves from the transmitter, and sendsa signal to the door lock control relay causing it to operate.As a result, the door lock control relay judges whether the door is locked or unlocked based on the signal from the door lockmotor and door unlock detection SW, and sends a signal to switch the condition from lock to unlock or vice versa, causingthe door lock motor to operate.
2. Visual Confirmation of Lock or UnlockIf all doors indicate that they are locked after the lock command, parking lights and hazard lights will flash once. If any doorindicates that it is open after the unlock command, parking lights and hazard lights will flash twice.
3. Wireless Door Unlock OperationPushing the unlock button (Transmitter) once, driver’s door is unlocked. Furthermore, pushing the button again within 3seconds, the other doors are unlocked.
4. Automatic Lock OperationWith the ignition key not inserted into the ignition key cylinder (Unlock warning SW off) and all the doors completely closed,after pushing the button (Transmitter) to unlock all the doors, if a door is not opened within 30 seconds, all the doors will beautomatically relocked.
5. Wireless Control Stop FunctionIf a door is open (Door courtesy SW on), a signal is input from the door courtesy SW to the door lock control relay stoppingwireless door lock or unlock.If the ignition key is in the ignition key cylinder (Unlock warning SW on), the unlock warning SW inputs a signal to the doorlock control relay stopping wireless door lock or unlock.
6. Repeat FunctionIn case an appropriate lock detection signal is not received after outputting a lock signal when pushing the lock button(Transmitter), 2 seconds later, the door lock control relay output the lock signal again.
7. Remote Panic OperationPanic will function when doors are locked or unlocked, open or closed. When the panic button (Transmitter) is pushed once,theft alarm sounds and headlights and hazard lights flash. Then, the panic or the unlock button (Transmitter) is pushed oncemore, sounding and flashing will stop. Panic will not function when ignition SW at ON.
: Parts Location
Code See Page Code See Page Code See Page
B5 32 D10 32 I14 32
D3 30 D13 32J4
A 31
D4 30 D14 32J4
B 31
D5 32 H1 28 J6 A 31
D6 32 H2 28 J7 B 31
D7 32 H4 28 J8 31
D8 32 H5 28 J10 32
D9 32 H6 30 U1 31
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
System Outline
96
SCION xB (EM0091U)
Wireless Door Lock Control
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1A 24 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
1G
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1H
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1J
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1L 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1M
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1O
1P
1S 24 Floor Wire and Instrument Panel J/B (Lower Finish Panel)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA135 Engine Room Main Wire and Instrument Panel Wire (Behind the Reinforcement LH)
IA235 Engine Room Main Wire and Instrument Panel Wire (Behind the Reinforcement LH)
IB2 35 Floor Wire and Instrument Panel Wire (Behind the Reinforcement LH)
IC135 Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
IC235 Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
IG135 Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
IG235 Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
BA1 36 Rear Door No.1 LH Wire and Floor Wire (Center Pillar LH)
BB1 36 Rear Door No.1 RH Wire and Floor Wire (Center Pillar RH)
BC1 36 Back Door No.1 Wire and Floor Wire (Right Rear Side Quarter Pillar)
: Ground Points
Code See Page Ground Points Location
IE 35 Left Kick Panel
IG 35 Right Kick Panel
BL 36 Back Door Center
SCION xB (EM0091U)
97
Memo
98
SCION xB (EM0091U)
ECT and A/T Indicator
15AEFI
1
10ASTOP
1B8
60A
MA
IN
15AAM2
1
1
2
1
B1O1
1A7
6 1O
2 3
1 5
1 1
1
W–R
1
W–R
A1
+B
1A11
1H8
EB
A3 B17
1P3
1H14
IE
7. 5AOBD
1P4
IA114
1P17
1O2
1
2
1B2
1P13
B4
IF1
CG
BR
BR
BR
BR
BR
ECE02E03
22 A
ED
6 C4 D
4
2
ODMS
6 B
7 1P
5 4
1 1E
16
W–R
BAT
TC
13
E 3(A), E 4(B), E 5(C), E 6(D)
15
P–B
B–Y
B–Y
EFIRelay
Battery
B–L
B–R
B–Y
W–B
W–B
W–B
W–B
G–Y
G–R
S 8
G–W
STP
5 6
I10
W–B
BATT TC
AM2 IG2
ST2
2
3
F 8
A30
NSW
4
B
1O7
BB
1H2
SG
A12
STA
BR
A 7
EC
P
N
9
B
6
1E6
B
B–Y
BR
W–B
B–Y
G–B
BR
BR
E1
3 C7 C
E01B
R
A 3
BR
BR
P–B
B–R
1G8
B–R
IF113
B
B–Y
Par
k/N
eutra
lP
ositi
on S
W
O/D
Mai
n S
W
Engine Control Module
Fusi
ble
Link
Blo
ck
Ignition SW
StopLight SW
D 1Data LinkConnector 3
(BAT)(BAT)(BAT)
A8
MREL
IA27
GR
GR
GR
CANL CANH
14 6
IF24
IF211
A2
+B2
B–R
B–R
IG
W
B
SCION xB (EM0091U)
99
D24D11D13D12D19D8D9
5 10 2 3 8 4 1
S1 S2 ST SLT+ SLSLT– THO1
W–G
W–R
B–R
W–L W G Y–G
D35 D27
2
1 3
C18 C20C28 C32
E 1
R B
E 3(A), E 4(B), E 5(C), E 6(D)
NT+ NT–
E2 VC VTA THW
R–W Y–R R–L
BR
BR
BR
BR
T 1
S2S1 ST SLT+ OTSLT–
B Y G LG
O
GR
O
6
E2
B8
SPD
B14
ODLP
1H3
1F6
G–O
V–W
V–W
G–O
B11B21B10B9
G–W
SL
BR
RD2L
WB–RB–R
R–WR–Y
G–R
G–W
G–R
R–Y
R–W
1
2
T 2
Electronically ControlledTransmission Solenoid
Engine Control Module
ThrottlePosition Sensor
Turb
ine
Spe
ed S
enso
r
VTA
E2
VC
B33 B34
CANH CANL
Skid Control ECU with ActuatorS 3
CANL CANH SP1
IA212 IA21 IA113
121125
W–RBW
B W
BA
A B B A
BW
W
BW–R
JunctionConnector
J 5
1
2
Eng
ine
Coo
lant
Tem
p.
Sen
sor
E 2
100
SCION xB (EM0091U)
ECT and A/T Indicator
RB
R–B
J 6(
A), J
7( B
)
A 3
R
R–W
G–W
G–W
G–R
R
G–R
E B
E A
B–R
IF1
R–W
R–Y
G–R
G–W
2912
231110987640
13 1H 16 1H
O/D
OFF
B–R
1H
2
3
NL DL
G–O
V–W
G–O
IF1
R–W
5 1E
10AGAUGE
IF19R
–W
75
PL
V–W
1G13
R–B
R–B
R–B
R–B
1
LL
IF116
GR
4
8
2L
4
RL
Spe
edom
eter
1H6
GR
819
1 1G
1E2
G–W
G–R
R–Y
G–WR G
R–Y
18 1G17 1G16 1G
3 1E4 1E9 1E
5 IF16 IF1
GR
G–W
R–Y
G–R
R–Y
R–WR
R–Y
IF17
C 6
A/T Indicator Light SW
Combination Meter
Junc
tion
Con
nect
orP R N D 2 L
BR
21
IF
CPU
(IG)
V–W
28
W–R
W–R
(∗2)BD(∗1)AD
(∗1)AD(∗2)BD
JunctionConnector
J 4(A), (B)
∗ 2 : From Dec. 2005 Production∗ 1 : Before Dec. 2005 Production
SCION xB (EM0091U)
101
Previous automatic transaxle have selected each gear shift using the mechanically controlled throttle hydraulic pressure,governor hydraulic pressure and lock–up hydraulic pressure. The electronically controlled transmission, however, electricallycontrols the line pressure and lock–up pressure etc., through the solenoid valve. Engine control module controls eachsolenoid valve based on the input signals from each sensor, which makes smooth driving possible by shift selection for eachgear that is most appropriate to the driving conditions at that time.
1. Gear Shift OperationDuring driving, the engine control module selects the shift for each gear which is most appropriate to the driving conditions,based on input signals from the engine coolant temp. sensor to TERMINAL THW of the engine control module, and also theinput signals to TERMINAL NT+ of the engine control module from the turbine speed sensor devoted to the direct clutch.Current is then output to the electronically controlled transmission solenoid. When shifting to 1st gear, current flows fromTERMINAL S1 of the engine control module to TERMINAL 5 of the electronically controlled transmission solenoid toGROUND, and from TERMINAL S2 of the engine control module to TERMINAL 10 of the electronically controlledtransmission solenoid to GROUND, and continuity to solenoids No.1 and No.2 causes the shift.For the 2nd gear, current flows from TERMINAL S1 of the engine control module to TERMINAL 5 of the electronicallycontrolled transmission solenoid to GROUND, and continuity to the solenoid No.1 causes the shift.For the 3rd gear, there is no continuity to either No.1 or No.2 solenoid.Shifting into 4th gear (Overdrive) takes place when current flows from TERMINAL S2 of the engine control module toTERMINAL 10 of the electronically controlled transmission solenoid to GROUND, and continuity to the solenoid No.2 causesthe shift.
2. Lock–Up OperationWhen the engine control module judges from each signal that lock–up operation conditions have been met, current flowsfrom TERMINAL SL of the engine control module to TERMINAL 4 of the electronically controlled transmission solenoid toGROUND, causing continuity to the lock–up solenoid and causing lock–up operation.
3. Clutch Pressure ControlThe electronically controlled transmission solenoid is controlled by the current from TERMINAL SL of the engine controlmodule, and controls the accumulator hydraulic pressure.As a result, the clutch to hydraulic pressure is adjusted precisely, and allows stable shift change.
4. Line Pressure ControlThe electronically controlled transmission solenoid is controlled by the current from TERMINAL SLT+ of the engine controlmodule, and controls the throttle hydraulic pressure.As a result, the line pressure can be controlled precisely, and the to hydraulic pressure is adjusted according to the shiftchange condition, and allows smooth shift change.
5. Shifting Control in Uphill/Downhill TravelingThis system determines whether the vehicle is traveling on an incline or decline from the throttle opening angle, vehicleacceleration condition and brake pedal operation, and controls the shift up to O/D to allow smooth driving.
6. Clutch to Clutch ControlWhen shifting from the 3rd gear to the 4th gear, the current from the engine control module TERMINAL ST controls theelectronically controlled transmission solenoid, to control the drain orifice hydraulic pressure (Switch orifice). Theelectronically controlled transmission solenoid is also controlled by the current from the engine control module TERMINALSLT+, to adjust the hydraulic pressure precisely, which ensures smooth shifting.
7. Stop Light SW CircuitIf the brake pedal is depressed (Stop light SW on) when driving in lock–up condition, a signal is input to TERMINAL STP ofthe engine control module, the engine control module operates and continuity to the lock–up solenoid is cut.
8. Overdrive Circuit∗ Overdrive on
When the engine is turned on from ignition off, the engine control module turns the O/D on. When the O/D main SW ispushed while the O/D is off, a signal is input into TERMINAL ODMS of the engine control module, and the O/D is turnedon by the engine control module. In this case, the engine control module controls the gear shift according to the vehicle’sdriving condition, using the O/D range. At this time, the O/D off indicator light is off.
∗ Overdrive offWhen the O/D main SW is pushed while the O/D is on, a signal is input into TERMINAL ODMS of the engine controlmodule, and the O/D is turned off. At this time, the current flows through the O/D off indicator light to TERMINAL ODLP ofthe engine control module. As a result, the O/D off indicator light turns on, and the engine control module controls the gearshift according to the vehicle’s driving condition, without using the O/D range.
System Outline
102
SCION xB (EM0091U)
ECT and A/T Indicator
: Parts Location
Code See Page Code See Page Code See Page
A3 28 E4 B 30 J5 31
A7 30 E5 C 30 J6 A 31
C6 30 E6 D 30 J7 B 31
D1 30 F8 28 S3 29
E1 28 I10 30 S8 31
E2 28J4
A 31 T1 29
E3 A 30J4
B 31 T2 29
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1A24 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
1B24 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
1E
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1F
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1G
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1H
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1O
1P
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA135 Engine Room Main Wire and Instrument Panel Wire (Behind the Reinforcement LH)
IA235 Engine Room Main Wire and Instrument Panel Wire (Behind the Reinforcement LH)
IF135 Engine Wire and Instrument Panel Wire (Behind the Glove Box)
IF235 Engine Wire and Instrument Panel Wire (Behind the Glove Box)
: Ground Points
Code See Page Ground Points Location
EB 34 Front Left Fender Apron
EC34 Engine Block
ED34 Engine Block
IE 35 Left Kick Panel
IF 35 Instrument Panel Brace LH
IG 35 Right Kick Panel
SCION xB (EM0091U)
103
Memo
104
SCION xB (EM0091U)
ABS, TRAC and VSC
ST2
IG2AM2 65
60A
MA
IN
13 IA1IA116 9
3 2
5 1
5 2
3 1
120A
ALT
2
MR
2
15
2 2
2 2 2
14
2
MRF
EB
GND1 GND2
45 31
32 1
R+ +BS
IA2
2
5
IG
CSW
43
BM
2T
3
12
SP1
28
PKB
S 3
P 3
AB
S C
UT
Rel
ay
AB
S M
TRR
elay
Battery
W–R
B W–L B
W–L
W–B
W–B
W–R
BRB–RL
B R
R
W–B
B–W B
B–W
W–B
B
F 8
W–R
1
40A
AB
S N
O. 1
1
1
2
54
W–B
34
B–R
B–R
W–B
W–B
IND
Fusi
ble
Link
Blo
ck
Par
king
Bra
ke S
W
Skid Control ECU with Actuator
TRA
C O
FF S
W
B–L
1
15A
AM
2
1
1
2
3
1A7
1O1
W–R
W–R
B
Ignition SWI10
R–B
B
40
P
R
20 IA2
IF116
BE
AE
P
3
1
B
RR
R
Junc
tion
Con
nect
or
J 6(
A), J
7( B
)
A/T
Indi
cato
rLi
ght S
W
A 3
1
60A
AB
S
SCION xB (EM0091U)
105
B–L
A 5
BR
–Y
17
FR–
2
1
1
IA2
1
2
1
2
IE15 IE12
6
FL–
5 19 4
RR+ RR–
W–R
P
R–Y
A16
44
BRL
29
WA
35
WT
36
VSCW
11
CANH
25
CANL
30
BZ
10
NEO
27
STP
NEO
7
G–W
R–W
W
S 3
BR–W
B
B–W
W–R
R G
LG–B
LG–R
18
FL+
LG–B
LG–R V
V
G–WB W
R–W
BR
–W
R–YP
B–W
IA2
W
R–W
1P10
9 1B
RRW
1B5
1P5
J 4(
A), (
B)
W
SIL WFSE CANL CANH
7 15 14 6
BB
W W
13
D 1
D/G
42
WFSE
RBY
A15
RL–RL+
620
3 IE17 IE1
2
1
FR+
3
BR
Y B
A 4
W–B
B–L
B–R
IA2IA2 22
B–R
IG1
12
46
W–B
B
AB
S S
peed
Sen
sor
Fron
t LH
AB
S S
peed
Sen
sor
Fron
t RH
AB
S S
peed
Sen
sor
Rea
r LH
AB
S S
peed
Sen
sor
Rea
r R
H
Data Link Connector 3
Junc
tion
Con
nect
or
Skid Control ECU with Actuator
R–B
BB
R–BIF19 R–B
IA29
R–L
TS
12
24
TS
R–L
33
CANH
34
CANL
B W
B
W
Engine Control ModuleE 4
(∗2)BE(∗1)AE
(∗1)AE(∗2)BE
∗ 2 : From Dec. 2005 Production∗ 1 : Before Dec. 2005 Production
106
SCION xB (EM0091U)
ABS, TRAC and VSC
G–W
IB1 714
A
B A
B
7. 5AECU–B
1R6
BK
A B
1 3 2 3 5
2
2
1
9 10 1
B–R
V 2
R–W
BATIG
S 7
CANL
W
B
BR–W
R–Y
P
B–W
W–R
BR–W
R–Y
P
B–W
W–R
WBBWW–B
R–W
W
W–B
B
W–B
W–B
W B B–L
W–R
B–L
B–L
W–R
CANH IG
ESS CANL CANH GND
Buz
zer
IB1
A B
W
B
B W
B
B–R
SteeringSensor
VS
C B
uzze
r
1
G–W
B–L
Sto
p Li
ght S
W
B–L
2
11 1H3 1B
7. 5AECU–IG
B–L
G–R
G–Y
S 8
1 1B
2 1B
8 1B
10ASTOP
B–L
BB
R–BR–B
IE14
BI
W–B
BH
W–B
BB16BA16
W–B
W–B
W–B
B–L
(IG) (BAT) (BAT)
JunctionConnector
J 5
A B
Yaw RateSensor
Y 1B W
B
W
SCION xB (EM0091U)
107
IA2 IA1
1A
10
B–R
5
B–R
21 IA2
3 1G
10AGAUGE
1G13
P
11
4 19 37 38 28
23C 6
BR–W
R–Y
P
B–W
W–R
B–W
B–R
BR
–W
R–Y P
B–W
W–R
R–B
IA2
21
BR
IF
BR
BR
–W
R–Y
5
1
Combination Meter
B
1O6
1G8
B–R
40
TRA
C O
FF
VS
C
AB
S
Bra
ke
Slip
Spe
edom
eter
15ADOME
1
1
L–Y
2
1A4
1G12
L–Y
B
CPU
R–B
1E5
R–B
(BAT)(IG)
108
SCION xB (EM0091U)
ABS, TRAC and VSC
1. ABS OperationIf the brake pedal is depressed suddenly, the ABS controls the hydraulic pressure of the wheel cylinders for all the fourwheels to automatically avoid wheel locking and ensure the directional and steering stability of the vehicle. If the brake pedalis depressed suddenly, the skid control ECU with actuator controls the solenoids in the actuators using the signals from thesensors to move the brake fluid to the reservoir in order to release the braking pressure applied to the wheel cylinder. If theskid control ECU with actuator detects that the fluid pressure in the wheel cylinder is insufficient, the skid control ECU withactuator controls the solenoids in the actuators to increase the braking pressure.
2. Traction Control OperationThe traction control system controls the engine torque, the hydraulic pressure of the driving wheel cylinders, slipping of thewheels which may occur at start or acceleration of the vehicle, to ensure an optimal driving power and vehicle stabilitycorresponding to the road conditions.
3. VSC OperationUnexpected road conditions, vehicle speed, emergency situation, and any other external factors may cause large under– orover–steering of the vehicle. If this occurs, the VSC system automatically controls the engine power and wheel brakes toreduce the under– or over–steering.To reduce large over–steering :If the VSC system determines that the over–steering is large, it activates the brakes for the outer turning wheels dependingon the degree of the over–steering to produce the moment toward the outside of the vehicle and reduce the over–steering.To reduce large under–steering :If the VSC system determines that the under–steering is large, it controls the engine power and activates the rear wheelbrakes to reduce the under–steering.TRAC OFF SWThe traction control SW is used to stop the TRAC function. After the engine is started, the TRAC system is stopped (turnedoff) and the TRAC OFF indicator light lights up. When the TRAC OFF SW is pressed again, the TRAC system enters thestand–by mode. If the engine is stopped and restarted, the TRAC system enters the stand–by mode regardless of thetraction control SW.VSC system cannot cut off by using TRAC OFF SW.
4. Mutual System ControlTo efficiently operate the VSC system at its optimal level, the VSC system and other control systems are mutually controlledwhile the VSC system is being operated.Engine throttle controlThe engine power does not interfere with the VSC brake control by controlling the opening of the throttle and reducing theengine output.Engine control and electronically controlled transmission controlThe strong braking force does not interfere with the braking force control of the VSC system by turning off the accel. andreducing changes in the driving torque at shift–down.VSC system operation indicationThe Slip indicator light flashes and the buzzer sounds intermittently to warn the driver that the current road is slippery, whilethe VSC system is being operated.
5. Fail Safe FunctionIf an error occurs in the skid control ECU with actuator, sensor signals, and/or actuators, the skid control ECU with actuatorinhibits the brake actuator control and inputs the error signal to the engine control module. According to the error signal, thebrake actuator turns off the solenoid and the engine control module rejects any electronically controlled throttle open requestfrom the VSC system. As a result, the vehicle functions regardless of the ABS, TRAC, and VSC systems.
: Parts Location
Code See Page Code See Page Code See Page
A3 28 F8 28 S3 29
A4 28 I10 30 S7 31
A5 28J4
A 31 S8 31
A15 32J4
B 31 T3 31
A16 32 J5 31 V2 31
C6 30 J6 A 31 Y1 31
D1 30 J7 B 31
E4 30 P3 31
System Outline
SCION xB (EM0091U)
109
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
2 23 ABS R/B (Engine Compartment Right)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1A24 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
1B24 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
1E
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1G
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1H
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1O
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1P
1R
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA135 Engine Room Main Wire and Instrument Panel Wire (Behind the Reinforcement LH)
IA235 Engine Room Main Wire and Instrument Panel Wire (Behind the Reinforcement LH)
IB1 35 Floor Wire and Instrument Panel Wire (Behind the Reinforcement LH)
IE1 35 Engine Room Main Wire and Floor Wire (Left Side of Cowl Panel)
IF1 35 Engine Wire and Instrument Panel Wire (Behind the Glove Box)
BA1 36 Rear Door No.1 LH Wire and Floor Wire (Center Pillar LH)
BB1 36 Rear Door No.1 RH Wire and Floor Wire (Center Pillar RH)
: Ground Points
Code See Page Ground Points Location
EB 34 Front Left Fender Apron
IF 35 Instrument Panel Brace LH
IG 35 Right Kick Panel
BH 36 Rear Door LH
BI 36 Rear Door RH
BK 36 Rear Quarter Panel Inner RH
110
SCION xB (EM0091U)
Multiplex Communication System – CAN
11
7. 5AECU–IG
1R
7. 5AECU–B
6
Y 1
W–R
A
A
B
B
W B W B
W BBW
1H
W–R
W–B
B W B–L
W–B
B A
B A
IG
3
2
3 2 5
1
9 10
GND
CANL CANH
1
BAT
ESS
CANH CANL IG
S 7
J 5
BK
Junc
tion
Con
nect
or
Ste
erin
g S
enso
r
Yaw Rate Sensor
B–L
IA212 IA21
W B
14 6 25 11
CANL CANH CANL CANH
D 1Data LinkConnector 3
S 3Skid Control ECUwith Actuator
B–L
1B3
B–L
IE14IB114IB17
IG
W–B
BH BI
W–B
W–B
6 BA1 BB16
W–B
W–B
W–B
(IG)(BAT)
B W
33 34
CANH CANL
E 4Engine Control Module
A B
A B
8 9
CANH CANL
A/C AmplifierA17
B W
∗ 2 : From Dec. 2005 Production∗ 1 : Before Dec. 2005 Production
BF
BF
JunctionConnector
J 4(B)
( ∗1)
( ∗1)
W–R
( ∗2)
W–R
( ∗2)
SCION xB (EM0091U)
111
Multiplex communication system (CAN) uses a serial communication protocol and communicates with a differential voltage.In this network system, TERMINALS CANH and CANL are used for communication between the ECUs and sensors, andexcellent data communication speed and communication error detecting facility are provided.
This system is working for the following systems:∗ ABS∗ Air Conditioning∗ Electronically Controlled Transmission and A/T Indicator∗ Engine Control∗ TRAC∗ VSC
: Parts Location
Code See Page Code See Page Code See Page
A17 30 J4 B 31 S7 31
D1 30 J5 31 Y1 31
E4 30 S3 29
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1B 24 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
1H25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1R25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA2 35 Engine Room Main Wire and Instrument Panel Wire (Behind the Reinforcement LH)
IB1 35 Floor Wire and Instrument Panel Wire (Behind the Reinforcement LH)
IE1 35 Engine Room Main Wire and Floor Wire (Left Side of Cowl Panel)
BA1 36 Rear Door No.1 LH Wire and Floor Wire (Center Pillar LH)
BB1 36 Rear Door No.1 RH Wire and Floor Wire (Center Pillar RH)
: Ground Points
Code See Page Ground Points Location
IG 35 Right Kick Panel
BH 36 Rear Door LH
BI 36 Rear Door RH
BK 36 Rear Quarter Panel Inner RH
System Outline
112
SCION xB (EM0091U)
Memo
SCION xB (EM0091U)
113
SRS (Before Dec. 2005 Production)
NOTICE: When inspecting or repairing the SRS, perform service in accordance with the following precautionary instructionsand the procedure, and precautions in the Repair Manual applicable for the model year.
Malfunction symptoms of the SRS are difficult to confirm, so the DTCs become the most important source of informationwhen troubleshooting. When troubleshooting the SRS, always inspect the DTCs before disconnecting the battery.
Work must be started more than 90 seconds after the ignition SW is turned to the ”OFF” position and thenegative (–) terminal cable is disconnected from the battery.(The SRS is equipped with a back–up power source so that if work is started within 90 seconds fromdisconnecting the negative (–) terminal cable of the battery, the SRS may deploy.)
When the negative (–) terminal cable is disconnected from the battery, the memory of the clock and audio system will becleared. So before starting work, make a record of the contents in the audio memory system. When work is finished,reset the audio systems as they were before and adjust the clock. Some vehicles have power tilt steering, powertelescopic steering, power seat and power outside rear view mirror which are all equipped with memory function.However, it is not possible to make a record of these memory contents. So when the work is finished, it will benecessary to explain it to your customer, and ask the customer to adjust the features and reset the memory. To avoiderasing the memory in each system, never use a back–up power supply from outside the vehicle.
Before repair, remove the airbag sensor if shocks are likely to be applied to the sensor during repair.
Do not expose the following parts directly to hot air or flame;
Even in cases of a minor collision where the SRS does not deploy, the following parts should be inspected;
Never use SRS parts from another vehicle. When replacing parts, replace with new parts.
For the purpose of reuse, never disassemble and repair the following parts.
If the following parts have been dropped, or have cracks, dents and other defects in their case, bracket, and connector,replace with new one.
Use a volt/ohmmeter with high impedance (10 kΩ/V minimum) for troubleshooting electrical circuits of the system.
Information labels are attached to the periphery of the SRS components. Follow the instructions of the notice.
After work on the SRS is completed, check the SRS warning light.
If the vehicle is equipped with a mobile communication system, refer to the precaution in the IN section of the RepairManual.
∗ Steering wheel pad∗ Front passenger airbag assembly∗ Seat belt pretensioner∗ Center airbag sensor assembly∗ Front airbag sensor assembly
114
SCION xB (EM0091U)
SRS (Before Dec. 2005 Production)
7 1A
1 1O
15AAM2
1
1
2
1
60A
MA
IN
3
1O6
1D5
B5
1 2 34 421
B16 B17 B10 B11
3
1D2 1D3
1O2
B28 B27
Bat
tery
B–L
W–R
W–R
B–O
A 9(A), A10(B), A11(C)
I10
R–B
E2 E1 D2+ D2– P+
IG2
P–
Y–V
Y–O
Y–R
Y–G
W–B
W–B
W–B
A13 A12
5 6AM2 IG2
ST2
F 8
IE
P2+P+ P–
14
D2+D+ D–
B
Y–G
R
Y–P
P2–P2+
D2–
7
W–B
8
C 6
13
Y
P2–
1
2
B BC8
D–
B
B
D+
Y–B
RBE+
23
SR
S
B
10AGAUGE
1G13
B–Y
21 34
B–O
Airbag Squib (Front Passenger' sAirbag Assembly)
Airbag Squib(Steering Wheel Pad)
Airbag Sensor Assembly
Com
bina
tion
Met
er
Fusi
ble
Link
Blo
ck
Ignition SW
BR
1A4
1G12
L–Y
L–Y
15ADOME
1
2
CPU
C12
W–B
RBE–
Buc
kle
SW
RH
B 8
B3
1G7
1D8
B–Y
LA
IF
1
BR
L–Y
(BAT)(IG)
1G8
40
B–R
SCION xB (EM0091U)
115
F 1
21
A2 A1
PL+ PL–
Y–B Y
P13
21
C5 C6
PR+ PR–
Y–B Y
P14
22 B
12
BR
1P3
1D4
1P5
1D1
B19 B12
TC SIL
13 7
D 1
P–B W
P–B W
W–R
B9
BR
W–R
–SL
B20
+SL
3 IA3 IA324 IA3 IA31
+SR –SR
B–W
BR
–W
B–W
BR
–W
2 1
GSW2
F 2
TC SIL
A 9(A), A10(B), A11(C)
26 BB15
BB
32
E 4 B 7
4
L–Y
A3
LSP+
5
LG–B
A8
LSP–
2
G–W
A11
LBE+
1
R–B
A7
LBE–
1H10
1D9
F/PS
Seat Position Sensor
Airbag Sensor Assembly
Data LinkConnector 3
Engine ControlModule
Front AirbagSensor LH
Front AirbagSensor RH
Pretensioner LH Pretensioner RH
Buckle SW LH
Seat PositionSensor
3
W–R
Com
bina
tion
Met
er
116
SCION xB (EM0091U)
SRS (Before Dec. 2005 Production)
The SRS is a driver and front passenger protection device which has a supplemental role to the seat belts.When the ignition SW is turned to ON, the current from the ignition SW flows to TERMINAL (B) 5 of the airbag sensorassembly.If an accident occurs while driving, when the frontal impact exceeds a set level, the current from the ignition SW flows toTERMINALS (B) 14, (B) 16, (B) 10, (B) 8, (A) 2 and (C) 5 of the airbag sensor assembly to the airbag squibs and thepretensioners to TERMINALS (B) 13, (B) 17, (B) 11, (B) 7, (A) 1 and (C) 6 of the airbag sensor assembly to TERMINAL (B)27, (B) 28 or BODY GROUND to GROUND, so that current flows to the airbag squibs and the pretensioners and causesthem to operate.The airbag stored inside the steering wheel pad is instantaneously expanded to soften the shock to the driver.The airbag stored inside the passenger’s instrument panel is instantaneously expanded to soften the shock to the frontpassenger.The pretensioners make sure of the seat belt restrainability.
: Parts Location
Code See Page Code See Page Code See Page
A9 A 30 B8 32 F8 28
A10 B 30 C6 30 I10 30
A11 C 30 D1 30 P13 33
A12 30 E4 30 P14 33
A13 30 F1 28
B7 32 F2 28
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1A 24 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
1D
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1G
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1H 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1O
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1P
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA3 35 Engine Room Main Wire and Instrument Panel Wire (Behind the Reinforcement LH)
: Ground Points
Code See Page Ground Points Location
IE 35 Left Kick Panel
IF 35 Instrument Panel Brace LH
System Outline
SCION xB (EM0091U)
117
SRS (From Dec. 2005 Production)
NOTICE: When inspecting or repairing the SRS, perform service in accordance with the following precautionary instructionsand the procedure, and precautions in the Repair Manual applicable for the model year.
Malfunction symptoms of the SRS are difficult to confirm, so the DTCs become the most important source of informationwhen troubleshooting. When troubleshooting the SRS, always inspect the DTCs before disconnecting the battery.
Work must be started more than 90 seconds after the ignition SW is turned to the ”OFF” position and thenegative (–) terminal cable is disconnected from the battery.(The SRS is equipped with a back–up power source so that if work is started within 90 seconds fromdisconnecting the negative (–) terminal cable of the battery, the SRS may deploy.)
When the negative (–) terminal cable is disconnected from the battery, the memory of the clock and audio system will becleared. So before starting work, make a record of the contents in the audio memory system. When work is finished,reset the audio systems as they were before and adjust the clock. Some vehicles have power tilt steering, powertelescopic steering, power seat and power outside rear view mirror which are all equipped with memory function.However, it is not possible to make a record of these memory contents. So when the work is finished, it will benecessary to explain it to your customer, and ask the customer to adjust the features and reset the memory. To avoiderasing the memory in each system, never use a back–up power supply from outside the vehicle.
Before repair, remove the airbag sensor if shocks are likely to be applied to the sensor during repair.
Do not expose the following parts directly to hot air or flame;
Even in cases of a minor collision where the SRS does not deploy, the following parts should be inspected;
Never use SRS parts from another vehicle. When replacing parts, replace with new parts.
For the purpose of reuse, never disassemble and repair the following parts.
If the following parts have been dropped, or have cracks, dents and other defects in their case, bracket, and connector,replace with new one.
Use a volt/ohmmeter with high impedance (10 kΩ/V minimum) for troubleshooting electrical circuits of the system.
Information labels are attached to the periphery of the SRS components. Follow the instructions of the notice.
After work on the SRS is completed, check the SRS warning light.
If the vehicle is equipped with a mobile communication system, refer to the precaution in the IN section of the RepairManual.
∗ Steering wheel pad∗ Front passenger airbag assembly∗ Seat belt pretensioner∗ Center airbag sensor assembly∗ Front airbag sensor assembly
118
SCION xB (EM0091U)
SRS (From Dec. 2005 Production)
7 1A
1 1O
15AAM2
1
1
2
1
60A
MA
IN
3
1O6
Bat
tery
B–L
W–R
W–R
I10
R–B
5 6AM2 IG2
ST2
F 8
C 6
23
B
10AGAUGE
1G13
21
Com
bina
tion
Met
er
Fusi
ble
Link
Blo
ck
Ignition SW
(IG)
1G8
40
B–R
SR
S
CPU
3335
1L3
15ADOME
B
IB113
BB
R–B
G–W
O
B–R
R–B
1D5
B21
1 2 34 421
B8 B7 B4 B3
3
B–O
D2+ D2– P+
IG2
P–
Y–V
Y–O
Y–R
Y–G
A13 A12
P2+P+ P–
5
D2+D+ D–
B
Y–G
R
Y–P
P2–P2+
D2–
216
Y
P2–
B B
D–
B
D+
Y–B
B–Y
34
Airbag Squib (Front Passenger' sAirbag Assembly)
Airbag Squib(Steering Wheel Pad)
B14
1G7
1D8
B–Y
LA
IF
BR
1
2
1
L–Y
L–Y
12 1G
4 1A
(BAT)
BR
Airbag Sensor AssemblyA19(A), A20(B), A21(C)
SCION xB (EM0091U)
119
23 BB13 B17
G–W R
PAONPBEW P–AB
GR
1
P–AB
6 3
2
IND PAON
JunctionConnector
J 4(B)
B
Passenger' s Seat Belt/Airbag Indicator (ON/OFF)
BC
BC
Passenger Seat BeltWarning Lamp
P15
BB
R–B
G–W
O
R–B
Airbag Sensor AssemblyA19(A), A20(B), A21(C)
O
1D3
1O2
B25
E1
W–B
W–B
21
A2 A1
PD+ PD–
Y–B Y
P13
21
C4 C5
PP+ PP–
Y–B Y
P14
22 B
1P3
1D4
1P5
1D1
B15 B16
TC SIL
13 7
D 1
P–B W
P–B W
GSW2TC SIL
IE
BB
32
E 4
1H10
1D9
F/PS
Data LinkConnector 3 Engine Control
Module
Pretensioner LH Pretensioner RH
1D2
B26
E2
W–B
1H12
W
120
SCION xB (EM0091U)
SRS (From Dec. 2005 Production)
B 9
3
G–W
A11
DBE+
2
R–B
A12
DBE–
Seat Position SensorBuckle SW LH
4
BK
W–B
BGND
RBE+
1
BSWFSR+ FSR–
RBE–
2
+BIG GND
B10Buckle SW RH
DIA7. 5AECU–B
1R6
(BAT)
J 4(B)JunctionConnector
B
F B
F
W–R
IB16
W–R
W–RB GR
B
C12
FSP+
C13
FSP–
O 5(A), O 6(B)Occupant Classification ECU
O P
IB111 IB15
W W–B
W–B
W–B
IE
2 1O
11 1K
A5A9A3A2A4A8A1A7
W
Y
F16
12
BW
B29
BW
–SL
B27
+SL
3 IA3 IA324 IA3 IA31
+SR –SR
W B
W B
2 1
F17
28 BB30
1
L–Y
A14
DSP+
6
LG–B
A13
DSP–
Front AirbagSensor LH
Front AirbagSensor RH
Airbag Sensor AssemblyA19(A), A20(B), A21(C)
W
LSP+ LSP– LBE+ LBE– E
SCION xB (EM0091U)
121
SGD2
SVC2
SVC2
SGD2
SIG2
SIG2
SGD4
SVC4
SVC4
SGD4
SIG4
SIG4
Occupant ClassificationSensor Rear RH
O10Occupant ClassificationSensor Front RH
O 8
B4B10B6B2B8B12
321321
BRRVOLW
SGD1
SVC1
SVC1
SGD1
SIG1
SIG1
SGD3
SVC3
SVC3
SGD3
SIG3
SIG3
O 9Occupant ClassificationSensor Rear LH
Occupant ClassificationSensor Front LH
O 7
B3B9B5B1B7B11
321321
WYGRGSBR
Occupant Classification ECUO 5(A), O 6(B)
122
SCION xB (EM0091U)
SRS (From Dec. 2005 Production)
∗ The system reaches an ignition judgment to deploy the following device based on the signals received from the frontairbag sensor and deceleration sensor.– Driver Airbag– Front Passenger Airbag– Seat Belt Pretensioner
∗ The dual–stage SRS airbag system has been used for the driver and front passenger airbags. This system controls theoptimal airbag inflation by judging the extent of impact, seat position (driver seat), whether or not the seat belt is fastened(driver seat) and information from the front passenger occupant classification system.
∗ The front passenger occupant classification system judges whether the front passenger seat is occupied by an adult orchild (with child seat) or is unoccupied, according to the load applied to the front passenger seat and whether the seat beltis buckled. Based on the results, it restricts the deployment of the front passenger airbag, front passenger side airbag, andfront passenger seat belt pretensioner. In addition, the system informs the driver of the result of the judgment through theuse of the AIRBAG ON/OFF indicator lights.
∗ The airbag sensor assembly transmits a signal to the engine control module in order to stop the fuel pump when theairbag is deployed.
: Parts Location
Code See Page Code See Page Code See Page
A12 30 D1 30 O6 B 33
A13 30 E4 30 O7 33
A19 A 30 F8 28 O8 33
A20 B 30 F16 28 O9 33
A21 C 30 F17 28 O10 33
B9 32 I10 30 P13 33
B10 32 J4 B 31 P14 33
C6 30 O5 A 33 P15 31
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1A 24 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
1D
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1G
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1H
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1K
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1L
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1O
1P
1R
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA3 35 Engine Room Main Wire and Instrument Panel Wire (Behind the Reinforcement LH)
IB1 35 Floor Wire and Instrument Panel Wire (Behind the Reinforcement LH)
: Ground Points
Code See Page Ground Points Location
IE 35 Left Kick Panel
IF 35 Instrument Panel Brace LH
BK 36 Rear Quarter Panel Inner RH
System Outline
SCION xB (EM0091U)
123
Memo
SCION xB (EM0091U)
37
SYSTEM CIRCUITS H
2006 xBELECTRICAL WIRING DIAGRAM
SYSTEM CIRCUITSPage
ABS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104Air Conditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164Audio System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146Back–Up Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46Cigarette Lighter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140Combination Meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150Door Lock Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82Electronically Controlled Transmission and A/T Indicator . . . . . . . . . . . . . . 98Engine Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48Fog Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60Front Wiper and Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74Headlight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142Ignition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42Illumination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66Interior Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64Key Reminder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126Light Reminder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138Multiplex Communication System (CAN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110Power Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38Power Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78PTC Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162Radiator Fan and Condenser Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156Rear Window Defogger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144Rear Wiper and Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76Remote Control Mirror . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136Seat Belt Warning (Before Dec. 2005 Production) . . . . . . . . . . . . . . . . . . . . . . 128Seat Belt Warning (From Dec. 2005 Production) . . . . . . . . . . . . . . . . . . . . . . . 130Shift Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124SRS (Before Dec. 2005 Production) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113SRS (From Dec. 2005 Production) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42Stop Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70Taillight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66TRAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104Turn Signal and Hazard Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62Two Way Flow Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158VSC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104Wireless Door Lock Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
48
SCION xB (EM0091U)
Engine Control60
A M
AIN
3
15AAM2
1
1
2
1
1O1
1A7
5 6
4
AM2 IG2
ST2
1O6
1O5
B–L
W–R
W–R
BB
–R
IF11
B–R
B–R
2
1
B–Y
B–R
2
1
B–W
B–R
2
1
B–L
B–R
2
1
B–O
7 1O
B
6 1E
B
BB
P
N
9
2
6
B–Y
( A/T
)
( A/T
)
( A/T
)
B–Y
( M/T
)
15AEFI
1
2 3
1 5
1 1
1 1
W–B
EB
W–B
B–Y
GR
B(A/T)
B–L
B–W
B–Y
B–O
B
B–R
I10
11 EA1
13 IF1
Bat
tery
EFIRelay
B–Y
B–R
B–R
( A/T
)
B–Y
EA115
2
1
EA112
B
( M/T
)
B
( M/T
)
B–Y
( M/T
)
8 1G
B–R
B–R
I 6 I 7 I 8 I 9 A 9
F 8
C 5
Par
k/N
eutra
l Pos
ition
SW
Clu
tch
Sta
rt S
W
Fusi
ble
Link
Blo
ckIn
ject
or N
o. 1
Inje
ctor
No.
2
Inje
ctor
No.
3
Inje
ctor
No.
4
Ignition SW
1
B–R
B–R
(BAT)
1H7
B–R
11IF2
B–R
IF24
B–Y
B(A/T)
Noi
se F
ilter
( Igni
tion)
N 1
B–R B–Y
B–Y
B–Y
B
B
3 1A
B–R
SCION xB (EM0091U)
49
GR
B(A/T)
B–L
B–W
B–Y
B–O
3 2
5 1
1A11 1H8
1T6 1H9
5
4
BJ
A25
FC
A12
STA
A1
+B
B–Y
14 IA1
D29
THA
D30
E2G
D28
VGBATT
3 A
4 2 3
1 5
A30
NSW
D1
# 40
D2
# 30
D5
# 20
D6
# 10
B–OB–Y
B–WB–L
B( A
/T)
Y–B V P
W–B
B–Y B
BR
B
C/OPNRelay
E 3(A), E 4(B), E 5(C), E 6(D)
B–Y
A8
MREL
GR
B–R
B–R
17 C 23 C
IGT1 IGF
16 C
IGT2
ED
2323
GND
VC VOUT
P 1
PSP
32 D
1
3 2
BR
Y–R
VTA1
20 C
VC
18 C
R–W
R–W
2
3 1
BR
B
W–B
1 4 1 4
Y
W
B–RB–R
G–R Y
G–B
YYW
–B
B–R
W–B
B–R
W–B
I 3
+B E2
THA E2G VG
R–W Y
B–Y
BR
BR
M
B–R B–R
I 2
1
B–R
B–R
F14
Engine Control Module
Fuel
Pum
p
Igni
tion
Coi
l and
Igni
ter
No.
1
Igni
tion
Coi
l and
Igni
ter
No.
2
Pow
er S
teer
ing
Oil
Pre
ssur
e S
enso
r
Thro
ttle
Pos
ition
Sen
sor
T 1 VTA VC
E2
B–R
A9
IGSW
B–R
IA27
GR
B–Y
A2
+B2
B–YB–R
B–R
20IF1
B B
ED
W–B
BR
B–R
Y
W–B
W–B
B–R
G–R
Noi
se F
ilter
(Fu
el P
ump)
N 3
EA14 B
B–Y
B
BRBR
B
Mas
s A
ir Fl
ow M
eter
M 1
W–B
R–W
10IF1
50
SCION xB (EM0091U)
Engine Control
THW
32 C C28
E2
R–L BR
BR
BR
IGT3
C15 14 C
IGT4
I 4
3 2 3 2
1 4 1 4
Y Y
W–B
G–O
G–Y
YY
B–R
W–B
B–R
I 5
W–B
Igni
tion
Coi
l and
Igni
ter
No.
3
Igni
tion
Coi
l and
Igni
ter
No.
4
32
1
BB
–R
C5
RSD
C3
E1
C1
HT1A
42
1 3
C21
OX1A
C2
HT1B
42
1 3
C25
OX1B
LL
WB–R
BR
B BR
BR B–R BR
V 1 ( ∗
1)
W
( ∗1)
( ∗1)
E 3(A), E 4(B), E 5(C), E 6(D)
B
BR
B
D23
PRG
W–G
2
1
B
B
B
IF213 IF214
IF22
1 IF2
(∗1)
VISC GND
DUTY HT OX HT OX
+B E1 +B E1
BR
BR
BR
I 1
BR
( ∗1)
BRBR
B–R B–R
H 3
H 7
Engine Control Module
Hea
ted
Oxy
gen
Sen
sor
( Ban
k 1
Sen
sor
1)
Hea
ted
Oxy
gen
Sen
sor
( Ban
k 1
Sen
sor
2)
Idle
Air
Con
trol V
alve
VS
V (
Pur
ge)
IF29
W
B–R
W–B
BR
A5
IB11
B B
IB14W–B
8
9
PP
M
IB18
A6
MPMP VPMP
Leak Detection Pump
1
V
6
W–B
V
IB110
BR
IF27
IB19
IB12
A31
PTMK
3 42
R
R–WBR
BR
BR
W–B
R
IB13
8IF2
R–WR–W
Canister PressureSensor
Ven
t Val
ve
GND+BGNDVCCVOUTSGND
+B
Canister Pump ModuleC10
2
1
Eng
ine
Coo
lant
Tem
p.
Sen
sor
E 2
SCION xB (EM0091U)
51
10ASTOP
1B8
1
2
B4
STP
22
G–W
1B2
1H2
C13
OC1+
C12
OC1–
C10
ALT
2
1
G–Y
G–R
R–Y
R–B L
M
R–B
3
KNK1
29 C
1 EB1
W
C27
NE+
C34
NE–
WW
O
2
1
1
2
C26
G2+
W
B
( ∗1)
C 2
D4
E03
C6
E02
C7
E01
BR
BR
BR
ED
E 3(A), E 4(B), E 5(C), E 6(D)
BR
BR
B
BR
FANH
A14
10ATAIL
1M4
FAN
NO
. 2R
elay
W–L
W
BR
∗ 1 : Shielded
Y–R
FANL
FAN
NO
. 1 R
elay
13 A
(∗1) (∗1)
1D9
1H10
B32
F/PS
B
C 1
(∗1)
C 3
EC
BR
BR
B–R
S 8
A10
G 1
Cam
shaf
tP
ositi
on S
enso
r
Cam
shaf
t Tim
ing
Oil
Con
trol V
alve
Cra
nksh
aft
Pos
ition
Sen
sor
Airbag SensorAssembly
Engine Control Module
Generator
Sto
p Li
ght S
W
GSW2
(BAT)(BAT)
B–R
BR
OFF
Tail
Head
Ligh
tC
ontro
l SW
+B T
13
10
1M9
1R3
ELS1
A15
GG
G
ELS2
B3
Fuse
Blo
ckB
–Y
EB12
EKNK
30 C
BB
BR
IF115
BR
BR
BR
1
2
Kno
ck S
enso
r( B
ank
1)
K 1
Com
bina
tion
SW
C 8
52
SCION xB (EM0091U)
Engine Control
D 1
22 A
EC
B17
TC TACH
1 B
P–B
1H14
1P3
P–B
B
13 9
B
B8
SPD HOT
29 B
COOL
18 B
V–W
7. 5AOBD
1P4
W–R
TC TAC
CANL
BR
1E1
1P7
BR
5
SG
BR
W–B
B7
NEO
V
IA26
AA AA
BC
W–R
12
SP1
Data Link Connector 3
W–B
IE
(BAT)
E 3(A), E 4(B), E 5(C), E 6(D)Engine Control Module
Y–B
Y–R
W–R
V–W
B–R
B
B
IG
B A
B A A B
14 6
CANL CANH
W B
B W
B30
W
B–R
Y–B
Y–R
Y–G
Y–G
34 B33 B
CANH
BW
1P17
1O2
BAT
16 4
CG
W–B
IA212 IA21
1F6
1H3
V–W
WB
CANH
11 25
CANL
B W
10
NEO
Junc
tion
Con
nect
or
J 5
V
V
Junc
tion
Con
nect
or
J 6(
A), J
7( B
)
Ski
d C
ontro
l EC
Uw
ith A
ctua
tor
S 3
SCION xB (EM0091U)
53
BR
233
CPU
IF
BR
21
Y–G
Speedometer
W–R
28
R–B
40
3020
13 IA1
B
Tachometer
Wat
er T
emp.
H
ot
Wat
er T
emp.
C
ool
Mal
func
tion
Indi
cato
r La
mp
R–B
B–R
2 29
Y–R
Y–B
1
15ADOME
1
L–Y
L–Y
1G12
1A4
2
(BAT)
Combination MeterC 6
V–W
W–R
B
Junc
tion
Con
nect
or
J 4(
A), (
B)
V–W
(IG)
2
1G
10AGAUGE
13
B–R
Y–B
Y–R
V–W
W–R
(∗2)BD(∗3)AD
(∗3)AD(∗2)BD
∗ 2 : From Dec. 2005 Production∗ 3 : Before Dec. 2005 Production
54
SCION xB (EM0091U)
Engine Control
This system utilizes an engine control module and maintains overall control of the engine, transmission and so on. An outlineof the engine control is explained here.
1. Input Signals(1) Engine coolant temp. signal circuit
The engine coolant temp. sensor detects the engine coolant temp. and has a built–in thermistor with a resistance whichvaries according to the engine coolant temp. thus the engine coolant temp. is input in the form of a control signal intoTERMINAL THW of the engine control module.
(2) Intake air temp. signal circuitThe intake air temp. sensor is installed in the mass air flow meter and detects the intake air temp., which is input as acontrol signal into TERMINAL THA of the engine control module.
(3) Oxygen sensor signal circuitThe oxygen density in the exhaust gases is detected and input as a control signal into TERMINALS OX1A and OX1B ofthe engine control module.
(4) RPM signal circuitCamshaft position and crankshaft position are detected by the camshaft position sensor and crankshaft position sensor.Camshaft position is input as a control signal to TERMINAL G2+ of the engine control module, and engine RPM is inputinto TERMINAL NE+.
(5) Throttle signal circuitThe throttle position sensor detects the throttle valve opening angle, which is input as a control signal into TERMINALVTA1 of the engine control module.
(6) Vehicle speed signal circuitThe vehicle speed sensor detects the vehicle speed, and the signal is input into TERMINAL SPD of the engine controlmodule via the combination meter, from TERMINAL SP1 of the skid control ECU with actuator.
(7) NSW signal circuit (A/T)The Park/Neutral position SW detects whether the shift position are in neutral, parking or not, and inputs a control signalinto TERMINAL NSW of the engine control module.
(8) Battery signal circuitVoltage is constantly applied to TERMINAL BATT of the engine control module. When the ignition SW is turned on, thevoltage for engine control module start–up power supply is applied to TERMINALS +B and +B2 of the engine controlmodule via EFI relay.
(9) Starter signal circuitTo confirm whether the engine is cranking, the voltage applied to the starter motor during cranking is detected and thesignal is input into TERMINAL STA of the engine control module as a control signal.
(10)Engine knock signal circuitEngine knocking is detected by knock sensor and the signal is input into TERMINAL KNK1 of the engine control moduleas a control signal.
System Outline
SCION xB (EM0091U)
55
2. Control System∗ SFI system
The SFI system monitors the engine condition through the signals, which are input from each sensor to the enginecontrol module. The best fuel injection volume is decided based on this data and the program memorized by the enginecontrol module, and the control signal is output to TERMINALS #10, #20, #30 and #40 of the engine control module tooperate the injector. (Inject the fuel). The SFI system produces control of fuel injection operation by the engine controlmodule in response to the driving conditions.
∗ ESA systemThe ESA system monitors the engine condition through the signals, which are input to the engine control module fromeach sensor. The best ignition timing is detected according to this data and the memorized data in the engine controlmodule, and the control signal is output to TERMINALS IGT1, IGT2, IGT3 and IGT4. This signal controls the ignition coiland igniter to provide the best ignition timing for the driving conditions.
∗ IAC systemThe IAC system increases the RPM and provides idling stability for fast idle–up when the engine is cold and when theidle speed has dropped due to electrical load, etc. The engine control module evaluates the signals from each sensor,outputs current to TERMINAL RSD, and controls the idle air control valve.
∗ Fuel pump control systemThe engine control module operation outputs to TERMINAL FC and controls the C/OPN relay. Thus controls the fuelpump drive speed in response to conditions.
3. Diagnosis SystemWith the diagnosis system, when there is a malfunctioning in the engine control module signal system, the malfunctionsystem is recorded in the memory. The malfunctioning system can then be found by reading the display (Code) of themalfunction indicator lamp.
4. Fail–Safe SystemWhen a malfunction occurs in any system, if there is a possibility of engine trouble being caused by continued control basedon the signals from that system, the fail–safe system either controls the system by using data (Standard values) recorded inthe engine control module memory or else stops the engine.
: Parts Location
Code See Page Code See Page Code See Page
A9 30 F8 28J4
A 31
A10 30 F14 32J4
B 31
C1 28 G1 28 J5 31
C2 28 H3 28 J6 A 31
C3 28 H7 30 J7 B 31
C5 30 I1 29 K1 29
C6 30 I2 29 M1 29
C8 30 I3 29 N1 29
C10 32 I4 29 N3 33
D1 30 I5 29 P1 29
E2 28 I6 29 S3 29
E3 A 30 I7 29 S8 31
E4 B 30 I8 29 T1 29
E5 C 30 I9 29 V1 29
E6 D 30 I10 30
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
56
SCION xB (EM0091U)
Engine Control
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1A24 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
1B24 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
1D
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1E
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1F
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1G
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1H 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1M
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1O
1P
1R
1T 24 Floor Wire and Instrument Panel J/B (Lower Finish Panel)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
EA1 34 Engine Wire and Engine Room Main Wire (Inside of Engine Room R/B)
EB1 34 Engine Wire and Sensor Wire (Near the Starter)
IA135 Engine Room Main Wire and Instrument Panel Wire (Behind the Reinforcement LH)
IA235 Engine Room Main Wire and Instrument Panel Wire (Behind the Reinforcement LH)
IB1 35 Floor Wire and Instrument Panel Wire (Behind the Reinforcement LH)
IF135 Engine Wire and Instrument Panel Wire (Behind the Glove Box)
IF235 Engine Wire and Instrument Panel Wire (Behind the Glove Box)
: Ground Points
Code See Page Ground Points Location
EB 34 Front Left Fender Apron
EC34 Engine Block
ED34 Engine Block
IE 35 Left Kick Panel
IF 35 Instrument Panel Brace LH
IG 35 Right Kick Panel
BJ 36 Rear Quarter Panel Inner LH
SCION xB (EM0091U)
57
Memo
124
SCION xB (EM0091U)
Shift Lock
8 1R
10AGAUGE
10ASTOP
1B8
1
2
1B2
1P18
R–B
G–Y
1K1
1O2
IE
G–R
G–W
L–R B
W–B
W–B
5 3
1
IG STP
SLS+ SLS– E
S 8
S 6
Shift LockSolenoid
P S
W
Shift Lock Control SW
Stop Light SW
(BAT)(IG)
SCION xB (EM0091U)
125
The current is applied at all times through the STOP fuse to TERMINAL 2 of the stop light SW.When the ignition SW is turned to ON position, the current from the GAUGE fuse flows to TERMINAL 5 of the shift lockcontrol ECU.
Shift Lock MechanismWith the ignition SW at ON position, when a signal that the brake pedal is depressed (Stop light SW on) and a signal that theshift lever is put in P position (Continuity P SW) is input to the shift lock control SW, the shift lock control SW operates andthe current flows from TERMINAL 5 of the shift lock control SW to TERMINAL SLS+ to the shift lock solenoid to TERMINALSLS– of the shift lock control SW to TERMINAL 1 to GROUND. This causes the shift lock solenoid to turn on (Plate stopperdisengages) and the shift lever can shift into position other than P position.
: Parts Location
Code See Page Code See Page Code See Page
S6 31 S8 31
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1B 24 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
1K
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1O
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1P
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1R
: Ground Points
Code See Page Ground Points Location
IE 35 Left Kick Panel
System Outline
126
SCION xB (EM0091U)
Key Reminder
10AGAUGE
15ADOME
1G13
Y
C 61
24 25
1G12
4 1A
R–B
2
U 1
1
Buzzer
W–B
W–B
IE
23
Y
1
2
1P19
1F1
1P16
2 1O
L–Y
RR
1S1
1G4
1
D 5
L–Y
Combination Meter
Doo
r C
ourte
sy S
WFr
ont L
H
Unl
ock
War
ning
SW
CPU
IF
21
BR
BR
(IG)(BAT)
SCION xB (EM0091U)
127
Current is always applied from the DOME fuse to TERMINAL 1 of the combination meter. When the ignition SW is turned toON position, the current from the GAUGE fuse flows to TERMINAL 23 of the combination meter.
Key Reminder SystemWhen the driver door is opened with the ignition SW off and ignition key remaining in the key cylinder (Unlock warning SWon), a signal is input from the unlock warning SW to TERMINAL 25 of the combination meter, and from the door courtesy SWfront LH to TERMINAL 24 of the combination meter. As a result, the buzzer in the combination meter goes on and warns thedriver that the key is remaining in the key cylinder.
: Parts Location
Code See Page Code See Page Code See Page
C6 30 D5 32 U1 31
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1A 24 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
1F
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1G
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1O
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1P
1S 24 Floor Wire and Instrument Panel J/B (Lower Finish Panel)
: Ground Points
Code See Page Ground Points Location
IE 35 Left Kick Panel
IF 35 Instrument Panel Brace LH
System Outline
128
SCION xB (EM0091U)
Seat Belt Warning (Before Dec. 2005 Production)
10AGAUGE
15ADOME
1G13
C 61
33 32
1G12
4 1A
R–B
2
1
Buzzer
W–B
W–B
IE
23
W–R
3
1D3
2 1O
L–Y
OL–
Y
Combination Meter
CPU
IF
21
BR
BR
(IG)(BAT)
Fron
t Pas
seng
erS
eat B
elt
War
ning
Lig
ht
35
Bel
tG
–W
Inte
grat
ion
Con
trol a
nd P
anel
I13
9
1
W–B
IG
IB18
1
2
IB112
1
3
D
D
Junc
tion
Con
nect
or
J 6
Buc
kle
SW
LH
B 7
Buc
kle
SW
RH
B 8
Occ
upan
t Det
ectio
n S
enso
r
B28 B27 A7 C12 C8
E2 E1 LBE– RBE– RBE+
Airbag Sensor AssemblyA 9(A), A10(B), A11(C)
W–B
1D2
R–B
W–B
W–B
R–B
W–R
W–RO
B
SCION xB (EM0091U)
129
Current is always applied from the DOME fuse to TERMINAL 1 of the combination meter. When the ignition SW is turned toON position, the current from the GAUGE fuse flows to TERMINAL 23 of the combination meter.
Seat Belt Warning SystemWhen the ignition SW turned on, a signal is input to the combination meter. To determine whether the driver has fastened theseat belt, a signal is input from the buckle SW LH to TERMINAL 32 of the combination meter. When the seat belt is notfastened, the seat belt warning light in the combination meter blinks, and emits a warning sound.In addition, the front passenger is recognized by a sensor (Occupant detection sensor) is installed in the front passengerseat, and determines whether the seat belt is fastened. When not fastened, the signals from the buckle SW RH is input toTERMINAL 33 of the combination meter, and the front passenger seat belt warning light blinks.
: Parts Location
Code See Page Code See Page Code See Page
A9 A 30 B7 32 I13 30
A10 B 30 B8 32 J6 31
A11 C 30 C6 30
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1A 24 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
1D
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1G 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1O
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IB1 35 Floor Wire and Instrument Panel Wire (Behind the Reinforcement LH)
: Ground Points
Code See Page Ground Points Location
IE 35 Left Kick Panel
IF 35 Instrument Panel Brace LH
IG 35 Right Kick Panel
System Outline
130
SCION xB (EM0091U)
Seat Belt Warning (From Dec. 2005 Production)
7 1A
1 1O
15AAM2
1
1
2
1
60A
MA
IN
3
1O6
Bat
tery
B–L
W–R
W–R
I10
R–B
5 6AM2 IG2
ST2
F 8
C 6
23
B
10AGAUGE
1G13
21
Com
bina
tion
Met
er
Fusi
ble
Link
Blo
ck
Ignition SW
IF
BR
(IG)
1G8
40
B–R
Bel
t
CPU
Buzzer
323335
1L3
B
IB113
BB
R–B
G–W
O
W–RO
G–W
W–R
B–R
R–B
1
2
1
15ADOME
L–Y
L–Y
12 1G
4 1A
(BAT)
SCION xB (EM0091U)
131
23 BB13 B17
G–W R
PAONPBEW P–AB
GR
B 9
3
G–W
A11
DBE+
2
R–B
A12
DBE–
Seat Position SensorBuckle SW LH
5
W–R
4
BK
W–B
1
P–AB
6 3
2
IND PAON
JunctionConnector
J 4(B)
B
Passenger' s Seat Belt/Airbag Indicator (ON/OFF)
BC
BC
Passenger Seat BeltWarning Lamp
P15
IB112
D
AD
A
JunctionConnector
J 6(A)
BB
GR
C12
FSP+
Y
C13
FSP–
GR
Y
R–B
G–W
O
W–R
R–B
W–R W–R
Airbag Sensor AssemblyA19(A), A20(B), A21(C)
O
LBE+ LBE– E
SA2
132
SCION xB (EM0091U)
Seat Belt Warning (From Dec. 2005 Production)
BGND
RBE+
1
BSWFSR+ FSR–
RBE–
2
+BIG GND
B10Buckle SW RH
DIA7. 5AECU–B
1R6
(BAT)
J 4(B)JunctionConnector
B
F B
F
W–R
IB16
W–R
W–RB GR
B
O 5(A), O 6(B)Occupant Classification ECU
O P
IB111 IB15
W W–B
W–B
W–B
IE
2 1O
11 1K
A5A9A3A2A4A8A1A7
SIL
7
D 1Data LinkConnector 3
5 1P
12 1H
WW
YGR
Y
SCION xB (EM0091U)
133
SGD2
SVC2
SVC2
SGD2
SIG2
SIG2
SGD4
SVC4
SVC4
SGD4
SIG4
SIG4
Occupant ClassificationSensor Rear RH
O10Occupant ClassificationSensor Front RH
O 8
B4B10B6B2B8B12
321321
BRRVOLW
SGD1
SVC1
SVC1
SGD1
SIG1
SIG1
SGD3
SVC3
SVC3
SGD3
SIG3
SIG3
O 9Occupant ClassificationSensor Rear LH
Occupant ClassificationSensor Front LH
O 7
B3B9B5B1B7B11
321321
WYGRGSBR
Occupant Classification ECUO 5(A), O 6(B)
134
SCION xB (EM0091U)
Seat Belt Warning (From Dec. 2005 Production)
Current is always applied from the DOME fuse to TERMINAL 1 of the combination meter. When the ignition SW is turned toON position, the current from the GAUGE fuse flows to TERMINAL 23 of the combination meter and flows TERMINAL 2 ofthe passenger seat belt warning lamp.
Seat Belt Warning SystemWhen the ignition SW turned on, a signal is input to the combination meter. To determine whether the driver has fastened theseat belt, a signal is input from the buckle SW LH to TERMINAL 32 of the combination meter. When the seat belt is notfastened, the seat belt warning light in the combination meter blinks, and emits a warning sound.In addition, the front passenger is recognized by the occupant classification ECU is installed in the front passenger seat, anddetermines whether the seat belt is fastened. When not fastened, the signals from the occupant classification ECU is input toTERMINAL 1 of the passenger seat belt warning lamp via the combination meter, and the passenger seat belt warning lampblinks.
: Parts Location
Code See Page Code See Page Code See Page
A19 A 30 D1 30 O6 B 33
A20 B 30 F8 28 O7 33
A21 C 30 I10 30 O8 33
B9 32 J4 B 31 O9 33
B10 32 J6 A 31 O10 33
C6 30 O5 A 33 P15 31
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1A 24 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
1G
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1H
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1K
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1L 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1O
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1P
1R
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IB1 35 Floor Wire and Instrument Panel Wire (Behind the Reinforcement LH)
: Ground Points
Code See Page Ground Points Location
IE 35 Left Kick Panel
IF 35 Instrument Panel Brace LH
BK 36 Rear Quarter Panel Inner RH
System Outline
SCION xB (EM0091U)
135
Memo
136
SCION xB (EM0091U)
Remote Control Mirror
6 1L
15AACC
B
EM+VRVLHRHL
RHLHRHLH
Rig
ht/
Dow
n
Left/
Up
Dow
n
Up
Rig
ht
Left
Sel
ect S
WO
pera
tion
SW
GR
8
7632 45
IE
IC22 3 IC2
M M
IG23 2 IG2
M M
1L5
1L12
IG21 IC21
1L11
3 3
1 5 1 5
LG–R
BR–Y
BR
–W
LG–B
BR
–W
BR
–Y
LG–R
LG–B
G–W
G–R
G–Y
W–B
G–W
G–R
W–B
G–W
G–R
R17
G–R
R16
R 5Remote Control Mirror SW
Rem
ote
Con
trol
Mirr
or L
H
Rem
ote
Con
trol
Mirr
or R
H
(ACC)
SCION xB (EM0091U)
137
: Parts Location
Code See Page Code See Page Code See Page
R5 31 R16 33 R17 33
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1L 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IC2 35 Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
IG2 35 Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
: Ground Points
Code See Page Ground Points Location
IE 35 Left Kick Panel
138
SCION xB (EM0091U)
Light Reminder
10
10ATAIL
1M4
15ADOME
1
OFF
Tail
Head
9 1M
10 1F
L–Y
13
1G4
1S1
1
G–W
L–Y
RG
R
D 5
10AGAUGE
1G13
R–B
2
1A4
1G12
Buzzer
C 8
G
G
24
23 1
C 6
26
Com
bina
tion
Met
er
Combination SW
Doo
r C
ourte
sy S
WFr
ont L
H
Ligh
tC
ontro
l SW
CPU
IF
21
BR
BR
(BAT)(IG)(BAT)
19 1P
1 1F
2
2 1D
16 1P
IE
W–B
1
YY
W–B
25
Unl
ock
War
ning
SWU 1
SCION xB (EM0091U)
139
The current is applied at all times to TERMINAL 1 of the combination meter through the DOME fuse.When the ignition SW is turned to ON position, the current flows to TERMINAL 23 of the combination meter through theGAUGE fuse. When the light control SW is turned to TAIL or HEAD position, current is applied to TERMINAL 26 of thecombination meter through the TAIL fuse.
Light Reminder SystemWhen the light control SW is in TAIL or HEAD position, the ignition SW turned to OFF from ON position, ignition key is not inthe key cylinder and the driver’s door opened (Door courtesy SW on), the current flows to TERMINAL 23 of the combinationmeter stops. As a result, the combination meter is activated and current flows from TERMINAL 1 of the combination meter,the buzzer in the combination meter goes on to remind the light is lighting up.
: Parts Location
Code See Page Code See Page Code See Page
C6 30 D5 32
C8 30 U1 31
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1A 24 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
1D
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1F
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1G 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1M
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1P
1S 24 Floor Wire and Instrument Panel J/B (Lower Finish Panel)
: Ground Points
Code See Page Ground Points Location
IE 35 Left Kick Panel
IF 35 Instrument Panel Brace LH
System Outline
140
SCION xB (EM0091U)
Cigarette Lighter
15AACC
1N6
1
2
B–W
W–B
C 4
IE
CigaretteLighter
(ACC)
SCION xB (EM0091U)
141
: Parts Location
Code See Page Code See Page Code See Page
C4 30
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1N 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
: Ground Points
Code See Page Ground Points Location
IE 35 Left Kick Panel
142
SCION xB (EM0091U)
Horn
15AHORN
1
2 3
1 5
1 1
1 1
IA14
1
G–W
W–R
G–R
G–R
2
C 7(A), (B)H 4
HORNRelay
D 4
23
W–R
W–R
W–R
HORN
G–W
W–R
1
G–R
H 5
G–R
Combination SW
Door LockControl Relay
Horn(High)
Horn(Low)
Hor
n
(BAT) ∗ 2 : From Dec. 2005 Production∗ 1 : Before Dec. 2005 Production
(∗2)BB(∗1)AC
(∗2)B6(∗1)A1
(∗1)AC(∗2)BB
ACBB
JunctionConnector
J 4(A), (B)
SCION xB (EM0091U)
143
: Parts Location
Code See Page Code See Page Code See Page
C7A 30 H4 28 J4 B 31
C7B 30 H5 28
D4 30 J4 A 31
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA1 35 Engine Room Main Wire and Instrument Panel Wire (Behind the Reinforcement LH)
144
SCION xB (EM0091U)
Rear Window Defogger
TimerCircuit
B
W–B
On
Off
W–B
2
B
8 1J
30ADEF
B
10AGAUGE
1P11
W–B
6 IB2
B–R
BM
3
A1
B1
42
BD11
1K3
2 1O
B
1
B
IE
W–B
1
BC11
B
R13
( A) ,
R14
( B)
R 4
N 2
R–B
B–R
R–B
Noi
se F
ilter
(R
ear
Win
dow
Def
ogge
r N
o. 1
)
Rea
r W
indo
wD
efog
ger
Rel
ay
Rea
r W
indo
w D
efog
ger
Integration Control and Panel
N 4
Noi
se F
ilter
( Sto
p Li
ght a
nd R
ear
Win
dow
Def
ogge
r N
o. 2
)
I12
Rear WindowDefogger SW
B–R
B–R
B
31
52
(BAT)(IG)
B
3
ELS2
Engine ControlModule
E 4
B–Y
B
1
7. 5
A I/
UP
1
2F1
5Fu
se B
lock
B
SCION xB (EM0091U)
145
: Parts Location
Code See Page Code See Page Code See Page
E4 30 N2 31 R13 A 33
F15 30 N4 33 R14 B 33
I12 30 R4 31
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1J
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1K
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1O
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1P
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IB2 35 Floor Wire and Instrument Panel Wire (Behind the Reinforcement LH)
BC1 36 Back Door No.1 Wire and Floor Wire (Right Rear Side Quarter Pillar)
BD1 36 Back Door No.1 Wire and Rear Window No.1 Wire (Right Side of Back Door)
: Ground Points
Code See Page Ground Points Location
IE 35 Left Kick Panel
BM 36 Back Door LH
146
SCION xB (EM0091U)
Audio System
15ADOME
1
15AACC
1N9
1A4
1N3
L
7
A4 A8
L–Y
L–Y
B–R
GR
A7
IF
1 2
A1 A5
GND FR+ FR–
LG L
F13
BA
1 2
A2 A6
FL+ FL–
P V
F12
B
1 2
P
21
LG
A
V
IG214
W–B
W–B
+B ANT
1
IC214
LLGP V
T 4
P
IC2
RR–RR+RL–RL+
B2 B6 B1 B3
IB29 IB210 IB211 IB212
1 2 1 2
WRYB
WR
R11
YB
R12
LLGV
T 5
7 IG2
AA AD
BC BC BF BF
AF
BDBD
AC
J 2(
A), J
3( B
)
A3
ACC
B
2 A14
R 2(A), R 3(B), R18(C)
AntennaAmplifier
Front Door Speaker RHFront Door Speaker LH
Junc
tion
Con
nect
or
Junc
tion
Con
nect
or
Radio and Player
Rear SpeakerLH
Rear SpeakerRH
Tweeter LH Tweeter RH
J 2(
A), J
3( B
)
(BAT) (ACC)
SCION xB (EM0091U)
147
C17 C15 C16 C19
ALI ARI ASGN AUXI
ALO ARO ASGN AUXO
1 2 3 4
Stereo Jack AdapterS 9
B W
( Shi
elde
d)
R
V–W
V–W
10AGAUGE
1G13
(IG) (BAT)
15ADOME
1
1A4
1G12
L–Y
L–Y
2
R–B
C 6
23
29 28
Com
bina
tion
Met
er
CPU
1
Spe
edom
eter
21
IA113
IF
W–B
W–R
W–R
Ski
d C
ontro
l EC
Uw
ith A
ctua
tor
S 3
SP1
R 2(A), R 3(B), R18(C)Radio and Player
12
SW2
C8
O
SWG
C6
LG
SW1
C7
P
121011
BD (∗2)AD (∗1)
AD (∗1)BD (∗2)
V–W
JunctionConnector
J 4(A), (B)
C3
SPD
Combination SWC 7
∗ 2 : From Dec. 2005 Production∗ 1 : Before Dec. 2005 Production
AU2 EAU AU1
MODE Seek+
Seek–
Volume+
Volume–
148
SCION xB (EM0091U)
Audio System
: Parts Location
Code See Page Code See Page Code See Page
A14 30 J3 B 31 R12 33
C6 30J4
A 31 R18 C 31
C7 30J4
B 31 S3 29
F12 32 R2 A 31 S9 31
F13 32 R3 B 31 T4 31
J2 A 31 R11 33 T5 31
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1A 24 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
1G25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1N25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA1 35 Engine Room Main Wire and Instrument Panel Wire (Behind the Reinforcement LH)
IB2 35 Floor Wire and Instrument Panel Wire (Behind the Reinforcement LH)
IC2 35 Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
IG2 35 Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
: Ground Points
Code See Page Ground Points Location
IF 35 Instrument Panel Brace LH
SCION xB (EM0091U)
149
Memo
58
SCION xB (EM0091U)
Headlight
2 1O
1M6
Head
Tail
OFFFlash
Low
High
IEIG
2 5
1 3
B AB A
2 1F5 1M7 1M
1G12
4 1A
11 1B10 1B8 1A9 1A
15ADOME
3
21
3
21
1
10A H–LP RH/H–LP LO RH
1
10A H–LP LH/H–LP LO LH
1
B–Y
H 2
H 1
B
J 6(
A), J
7( B
)
B–Y
B–W
B–R B
L–Y
B–W B–Y
L–Y
D 4
IA2
BB
B–W B–W
B–W
HRLY
H 6
B–Y
B–Y
B–Y
W–B
8 9
Dimmer SW
Light Control SW
R
13
C 8
W–B
11
2 2 2
5B B
1
14
C 6
Bea
m
W–B
W–B
Com
bina
tion
Met
er
Combination SWDoor LockControl Relay
Hea
dlig
ht L
H
Hea
dlig
ht R
H
Hea
dlig
htR
elay
Junc
tion
Con
nect
or
(BAT)(BAT)(BAT)
SCION xB (EM0091U)
59
: Parts Location
Code See Page Code See Page Code See Page
C6 30 H1 28 J6 A 31
C8 30 H2 28 J7 B 31
D4 30 H6 30
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1A24 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
1B24 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
1F
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1G
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1M
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1O
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA2 35 Engine Room Main Wire and Instrument Panel Wire (Behind the Reinforcement LH)
: Ground Points
Code See Page Ground Points Location
IE 35 Left Kick Panel
IG 35 Right Kick Panel
150
SCION xB (EM0091U)
Combination Meter
B–Y
Airb
ag S
enso
r A
ssem
bly
Bat
tery
F 8
Unl
ock
War
ning
SW
60A
MA
IN
3
2
1
V–W
B
B–L
W–R
W–R
BR
BR
F14
Y
VV
G–W
I10
2
3
4 1T
7 1F
IF
ST2
IG2AM2 65
7 1A
1 1O
1
15AAM2
1
TACH
B
OO
ccup
ant D
etec
tion
Sen
sor
( ∗1)
IB27
BR
BR
35 32
Buc
kle
SW
LH
W–R
J 6(
A), J
7( B
)
1F6
1H3
SPD
A A
C B
3029
33 34253121
B
V–W
E 4Engine Control Module
Fusi
ble
Link
Blo
ck
Fuel
Sen
der
Ignition SW
Junc
tion
Con
nect
or
OD
O/T
rip S
W
Fuel
Tach
omet
er
Spe
edom
eter
LCD(ODO/Trip Clock)
V–W
Doo
r Lo
ckC
ontro
lR
elay
28
IA113
SP1
12
W–R
W–R
Ski
d C
ontro
l EC
Uw
ith A
ctua
tor
S 3
1K4
B
Combination MeterC 6
CPU
Clo
ck H
Clo
ck M
W–G
Rhe
osta
t
27
BuzzerV
–W
Junc
tion
Con
nect
or
J 4(
A), (
B)
78
Airb
ag S
enso
r A
ssem
bly
( ∗2)
(∗2)BD(∗1)AD
(∗1)AD(∗2)BD
Inte
grat
ion
Con
trol a
nd P
anel
(∗1
)P
asse
nger
Sea
t Bel
t War
ning
Lam
p ( ∗
2)
SCION xB (EM0091U)
151
Ski
d C
ontro
l EC
Uw
ith A
ctua
tor
1G8
1O6
B–R
R–B
P
1G13
10AGAUGE
23
37
40B
AB
S
Bra
ke
Fuel
SR
S
Bel
t
Doo
r
Bea
m
LCD
Bac
k Li
ght
Oil
Pre
ssur
e
Oil
Pre
ssur
e S
W
Bra
ke F
luid
Lev
elW
arni
ng S
W
W–B
B
2
1
EA
B 2
Bac
k D
oor
Cou
rtesy
SW
B
O 1
B–W
Ski
d C
ontro
l EC
Uw
ith A
ctua
tor
173638
1
2
G
2 IF1
G
L–Y
L–Y
Com
bina
tion
SW
Doo
r C
ourte
sy S
WFr
ont R
H,
Rea
r LH
, R
H
Doo
r C
ourte
sy S
WFr
ont L
H
B–Y
R–WR
1
15ADOME
1G12
1A4
24 15 14
Combination MeterC 6
CPU
IA214
B
Mai
ntR
eqd
(BAT)(IG)
1
∗ 2 : From Dec. 2005 Production∗ 1 : Before Dec. 2005 Production
152
SCION xB (EM0091U)
Combination Meter
Eng
ine
Con
trol M
odul
e
B–R
BR
–W
Eng
ine
Con
trol M
odul
e
G–B
G–Y
FLS
H R
elay
G–O
13
12 4 195
18R
–Y
Ski
d C
ontro
l EC
Uw
ith A
ctua
tor
Y–G
20
Mal
func
tion
Indi
cato
r La
mp
TRA
C O
FF
Wat
er T
emp.
H
ot
Cha
rge
O/D
OFF
Slip
VS
C
Wat
er T
emp.
C
ool
Turn
LH
Turn
RH
16
Gen
erat
orY
Combination MeterC 6
3
Y–R
2
Y–B
Eng
ine
Con
trol
Mod
ule
SCION xB (EM0091U)
153
Illum
inat
ion
G–W
G–R
1076
R–WR GR
R–Y
A/T
Indi
cato
rLi
ght S
W
8 9 11
P R N D 2 L
26
Com
bina
tion
SW
G
Combination MeterC 6
154
SCION xB (EM0091U)
Combination Meter
: Parts Location
Code See Page Code See Page Code See Page
B2 28 F14 32 J6 A 31
C6 30 I10 30 J7 B 31
E4 30J4
A 31 O1 29
F8 28J4
B 31 S3 29
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1A 24 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
1F
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1G
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1H 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1K
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1O
1T 24 Floor Wire and Instrument Panel J/B (Lower Finish Panel)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA135 Engine Room Main Wire and Instrument Panel Wire (Behind the Reinforcement LH)
IA235 Engine Room Main Wire and Instrument Panel Wire (Behind the Reinforcement LH)
IB2 35 Floor Wire and Instrument Panel Wire (Behind the Reinforcement LH)
IF1 35 Engine Wire and Instrument Panel Wire (Behind the Glove Box)
: Ground Points
Code See Page Ground Points Location
EA 34 Front Right Fender Apron
IF 35 Instrument Panel Brace LH
SCION xB (EM0091U)
155
Memo
156
SCION xB (EM0091U)
Radiator Fan and Condenser Fan
30ARDI
1
7. 5AECU–IG
1B3
3 2
5 1
1 1
1
1
1
1
1 1
1 3
2 5
4
1
2
1
15 IA2 7 IA1
FANNO. 1Relay
FANNO. 2Relay
L–W
B–L
LW
–B
A 1
LL
R 1
W–B
2
1
2
Y–R
L–R
L–R
B–L
13 14
W–B
W–B
EB
W–B
W–L
L–R
W–L
W–L
Y–R
FANL FANH
E 3
A/C
Con
dens
erFa
n R
esis
tor
Engine Control Module
RadiatorFan Motor
(IG)(BAT)
M
SCION xB (EM0091U)
157
The current is applied at all times through the RDI fuse to TERMINAL 5 of the FAN NO.1 relay.When the ignition SW is turned on, the current flows through the ECU–IG fuse to FAN NO.1 relay (Coil side) to TERMINAL13 of the engine control module. At the same time as this current flow, the current from ECU–IG fuse flows to the FAN NO.2relay (Coil side) to TERMINAL 14 of the engine control module.
1. Low Speed OperationWhen the A/C system is operating, the FAN NO.1 Relay is turned on. As a result, the current flows from the RDI fuse to FANNO.1 relay (Point side) to TERMINAL 2 of the radiator fan motor to TERMINAL 1 to TERMINAL 3 of the FAN NO.2 relay toTERMINAL 4 to TERMINAL 2 of the A/C condenser fan resistor to TERMINAL 1 to GROUND, and the radiator fan motorrotates at low speed.
2. High Speed OperationWhen the pressure SW (Single) is on or engine control module operated, the FAN NO.1 and NO.2 relay is turned on. As aresult, the current flows from the RDI fuse to FAN NO.1 relay (Point side) to radiator fan motor to TERMINAL 3 of the FANNO.2 Relay to TERMINAL 5 to GROUND, and the radiator fan motor rotates at high speed.
: Parts Location
Code See Page Code See Page Code See Page
A1 28 E3 30 R1 29
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1B 24 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA135 Engine Room Main Wire and Instrument Panel Wire (Behind the Reinforcement LH)
IA235 Engine Room Main Wire and Instrument Panel Wire (Behind the Reinforcement LH)
: Ground Points
Code See Page Ground Points Location
EB 34 Front Left Fender Apron
System Outline
158
SCION xB (EM0091U)
Two Way Flow Heater
7. 5AA. C
40AHTR
10AGAUGE
3 2
4
5 1
1J7 1J11O2
1J9
W–B
W–B
W–B
IE
W–B
L–R L
L–B
HTRRelay
B–Y
B–Y
2
W–B
Blower SW
L–W
L–Y
L–W
L–B W–B
L–R
L–Y
L–B
L–B
10 6 7
2
1
HI M2 M1 LO OFF
I13
L
IG
Integration Control and Panel
IH13 IH16 IH15 IH14
IH11
21 3 2 4
1Blower ResistorB 4
Blo
wer
Mot
orB
3
(IG)(BAT)
M
SCION xB (EM0091U)
159
13
Foot
SW
A17(A), A18(B)
F/D
SW
7. 5AECU–IG
1H11
I15
IG
Max
Hot
SW
2
W–B
32 81
7A 8
B–L
W–B
B–Y
L–B
L–B
W L–O
L–R
L–Y
W–B
L–W
W–B
B–L
B–L
B–L
SW–6 SW–9 IG OUT–7OUT–4OUT–6
SW–2 GND–1
W–B
B–L
L–B
W
L–B
L–B
Foot
Mod
e S
W
FRS
REC
2
1
D 2
A
M ControlCircuit
B
Air Inlet Servo Motor
Integration Control and Panel
A/C Amplifier
Inle
t Air
Pos
ition
Det
ectio
n S
W
(IG)
B14 B17 A14 A18 A16 A28
B24 A9A8 A20 A24
ALT CANH CANL
B34B33C10
IF14
ALT CANH CANL
Engine Control ModuleE 4(B), E 5(C)
GeneratorG 1
B WWB
G–B
LL
L
A B
A B
3
M
Junc
tion
Con
nect
or
J 5
A
A
Junc
tion
Con
nect
or
J 7
W
∗ 2 : From Dec. 2005 Production∗ 1 : Before Dec. 2005 Production
(∗2)BA(∗1)AA
(∗1)AA(∗2)BA
JunctionConnector
J 4(A), (B)
B–Y
160
SCION xB (EM0091U)
Two Way Flow Heater
When all of the following conditions are met, the recirculation/fresh air inlet damper is switched to the DUAL MODE position.∗ The recirculation/fresh air switch is at FRESH position∗ The blower SW is on.∗ The max hot SW is on.∗ The foot mode SW is at FOOT or F/D position.
: Parts Location
Code See Page Code See Page Code See Page
A8 30 D2 30 I15 30
A17 A 30 E4 B 30J4
A 31
A18 B 30 E5 C 30J4
B 31
B3 30 G1 28 J5 31
B4 30 I13 30 J7 31
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1H
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1J 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1O
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IF1 35 Engine Wire and Instrument Panel Wire (Behind the Glove Box)
IH1 35 Instrument Panel Wire and A/C Sub Wire (Right Side of A/C Unit)
: Ground Points
Code See Page Ground Points Location
IE 35 Left Kick Panel
IG 35 Right Kick Panel
System Outline
SCION xB (EM0091U)
161
Memo
162
SCION xB (EM0091U)
PTC Heater
50AHTRSUB1
1
7. 5AECU–IG
3 2
5 1
1 1
HTR SUB1Relay
1 1
IA217
PTC1 ALT
B–W
R
L–W
G–B
2
L–W
IG
A17(A), A18(B)
IG
GND–1
W–B
W–B
4 IF1
G 1
3
L
1
P 5
1H11
B–L
B–Y
2
I15
B–L
L–B
3
L–B
B–L
M
B–Y
Generator
Inte
grat
ion
Con
trol
and
Pan
el
A/C Amplifier
PTC
Hea
ter
(IG)(BAT)
7. 5AA. C
1J9
HTR
Rel
ay
3 2
4
5 1
2
(IG)(BAT)
IE
1O2
W–B
40AHTR
10AGAUGE
B
A A
SW–6
L–B
EA
W–B
B9 A14 B24
A24
C32 C28
B34B33C10
A8 A9
LL
1
R–L BR
ALT CANH CANL
THW E2
A B
A B
B W
B W
CANLCANH
Eng
ine
Con
trol
Mod
ule
E 4(
B), E
5( C
)Ju
nctio
nC
onne
ctor
J 5
JunctionConnector
J 7
2
Eng
ine
Coo
lant
Tem
p.
Sen
sor
E 2
Max
Hot
SW
14
∗ 2 : From Dec. 2005 Production∗ 1 : Before Dec. 2005 Production
(∗2)BA(∗1)AA
(∗1)AA(∗2)BA
JunctionConnector
J 4(A), (B)
SCION xB (EM0091U)
163
When all of the following conditions are met, the PTC heater operates.∗ The engine coolant temp. has reached the specified temperature.∗ The engine RPM has exceeded the specified RPM for more than 5 seconds continuously.∗ The max hot SW is on.If any of the above conditions change, the PTC heater stops. The PTC heater is turned on/off according to the generator’scharge/discharge condition.
: Parts Location
Code See Page Code See Page Code See Page
A17 A 30 E5 C 30 J4 B 31
A18 B 30 G1 28 J5 31
E2 28 I15 30 J7 31
E4 B 30 J4 A 31 P5 31
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1H
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1J 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1O
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA2 35 Engine Room Main Wire and Instrument Panel Wire (Behind the Reinforcement LH)
IF1 35 Engine Wire and Instrument Panel Wire (Behind the Glove Box)
: Ground Points
Code See Page Ground Points Location
EA 34 Front Right Fender Apron
IE 35 Left Kick Panel
IG 35 Right Kick Panel
System Outline
164
SCION xB (EM0091U)
Air Conditioning
7. 5AA. C
40AHTR
10AGAUGE
3 2
4
5 1
1J7 1J11O2
1J9 1H18
10 6 7
2
1
HI M2 M1 LO OFF
W–B
W–B L–
R
L
L–B
HTRRelay
B–Y
B–Y
2
W–B
I13
L
L–Y
L–W W–B
IE IG
L–W
L–B
W–B
L–R
L–Y
L–B
L–B
W–B
W–B
Integration Control and Panel
IH11
IH13 IH16 IH15
1 3 2 42
1
Blower SW
IH14
Blo
wer
Mot
orB
3
Blower ResistorB 4
(IG)(BAT)
M
W–B
B–Y
B–Y
W–B
SCION xB (EM0091U)
165
B–Y
On
Off
O
1
SG–2TESW–5
2
I11
3 1
W–B
BR
4
3
DEF
B–Y
B–Y
SW–4B
–W
J 4(
A), (
B)
A27 A26 A22 A23
B–Y
Integration Control and Panel
Junc
tion
Con
nect
or
A/C SW
GND–1
A24
IG
W–B
Def
rost
er M
ode
Det
ectio
n S
W
D 2
B–Y
W–B
7. 5AECU–IG
1H11
A14
B–L
B–L
(IG)
IG
A/C
Am
plifi
erA1
7(A)
, A18
( B)
A13 A7 10 A12 B24 A9A8
IF112 IA13 IA18 IA213 IA14
2
EA13
EA
L–B
R–W BR
B–R
G–B
L–B
B–W
W–B
R–W BR
B–R
C27 C34
C10 B33 B34
2
1
EC
B W
B W
LL
L
A B
A B
NE+ NE–
ALT CANH CANLM
Pressure SensorP 2
GeneratorG 1
Eng
ine
Con
trol
Mod
ule
E 4(
B), E
5( C
)Ju
nctio
nC
onne
ctor
J 5
SOL+ S5–2 SG–1 PRE ALT CANH CANL
3 1 2
3
BR
WO
( Shi
elde
d)C
rank
shaf
tP
ositi
onS
enso
r
C 3
1
A/C
Mag
netic
Val
ve
A 2
A
2
A/C
The
rmis
tor
A 6
SW–9
B17
1
2
WB
–YB
–LW
Inte
grat
ion
Con
trol
and
Pan
el
I15
Max
Coo
l SW
(∗1)AA
(∗2)BA (∗2)BA(∗1)AA(∗1)AA
(∗2)BA
∗ 2 : From Dec. 2005 Production∗ 1 : Before Dec. 2005 Production
166
SCION xB (EM0091U)
Air Conditioning
Current is applied at all times through the HTR fuse to TERMINAL 5 of the HTR relay.When the ignition SW is turned on, the current flows through the GAUGE fuse to TERMINAL 1 of the HTR relay toTERMINAL 2 to TERMINAL 2 of the blower SW.
1. Heater Blower Motor Operation∗ Low speed operation
When the blower SW is moved to LO position, the current flows to TERMINAL 2 of the blower SW to TERMINAL 1 toGROUND, causing the HTR relay to turn on. This causes the current flows from the HTR fuse to TERMINAL 5 of theHTR relay to TERMINAL 3 to TERMINAL 1 of the blower motor to TERMINAL 2 to TERMINAL 1 of the blower resistor toTERMINAL 4 to GROUND, rotating the blower motor at low speed.
∗ Medium speed operation (Operation at M1, M2)When the blower SW is moved to M1 position, the current flows to TERMINAL 2 of the blower SW to TERMINAL 1 toGROUND, causing the HTR relay to turn on. This causes the current flows from the HTR fuse to TERMINAL 5 of theHTR relay to TERMINAL 3 to TERMINAL 1 of the blower motor to TERMINAL 2 to TERMINAL 1 of the blower resistor toTERMINAL 2 to TERMINAL 7 of the blower SW to TERMINAL 1 to GROUND. At this time, the blower resistance of theblower resistor is smaller than at low speed, so the blower motor rotates at medium low speed.When the blower SW is moved to M2 position, the current flows through the HTR relay to TERMINAL 1 of the blowermotor to TERMINAL 2 to TERMINAL 1 of the blower resistor to TERMINAL 3 to TERMINAL 6 of the blower SW toTERMINAL 1 to GROUND. At this time, resistance of the blower resistor is smaller than at M1 position, so the blowermotor rotates at medium high speed.
∗ High speed operationWhen the blower SW is moved to HI position, the current flows to TERMINAL 2 of the blower SW to TERMINAL 1 toGROUND, causing the HTR relay to turn on.This causes the current flows from the HTR fuse to TERMINAL 5 of the HTR relay to TERMINAL 3 to TERMINAL 1 ofthe blower motor to TERMINAL 2 to TERMINAL 10 of the blower SW to TERMINAL 1 to GROUND, rotating the blowermotor at high speed.
2. Air Conditioning OperationWhen the blower SW is set on, the current flows from the HTR fuse to the HTR relay (Point side) to the A.C fuse to theTERMINAL 3 of the A/C SW. If the A/C SW is turned on, at this time a signal is input into the A/C amplifier. This activates theA/C amplifier.
3. DEF or FOOT & DEF Synchronized Control FunctionWhen the blower SW is on and the heater control lever (Air vent mode control lever) turned to DEF position, it causes A/C torun whether A/C SW is on or not.
: Parts Location
Code See Page Code See Page Code See Page
A2 28 C3 28 I13 30
A6 30 D2 30 I15 30
A17 A 30 E4 B 30J4
A 31
A18 B 30 E5 C 30J4
B 31
B3 30 G1 28 J5 31
B4 30 I11 30 P2 29
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1H
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1J 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1O
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
System Outline
SCION xB (EM0091U)
167
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
EA1 34 Engine Wire and Engine Room Main Wire (Inside of Engine Room R/B)
IA135 Engine Room Main Wire and Instrument Panel Wire (Behind the Reinforcement LH)
IA235 Engine Room Main Wire and Instrument Panel Wire (Behind the Reinforcement LH)
IF1 35 Engine Wire and Instrument Panel Wire (Behind the Glove Box)
IH1 35 Instrument Panel Wire and A/C Sub Wire (Right Side of A/C Unit)
: Ground Points
Code See Page Ground Points Location
EA 34 Front Right Fender Apron
EC 34 Engine Block
IE 35 Left Kick Panel
IG 35 Right Kick Panel
60
SCION xB (EM0091U)
Fog Light
10AGAUGE
1J10
3 1
5 2
1
2
1
2
EB
F11
G–R
R–W
R–W
R–W
W–B
W–B
F10
G–R
IA112
ON
OFF
Head
Tail
OFFFlash
Low
High
Dimmer SW
Light Control SW
C 8
BB
AB
1O2
1M6
IE
11
W–B
W–B
2 3
8
G–O
B–W
B–W
G–O
J 6(A), J 7(B)
W–B
EA
Combination SW
Front FogLight Relay
Front Fog Light SW
Junction Connector
(IG)
Fron
t Fog
Ligh
t LH
F 3
Fron
t Fog
Ligh
t RH
F 4
∗ 1 : Before Dec. 2005 Production∗ 2 : From Dec. 2005 Production
15AFOG
(BAT)
( ∗1)
(∗2)
SCION xB (EM0091U)
61
: Parts Location
Code See Page Code See Page Code See Page
C8 30 F10 30 J7 B 31
F3 28 F11 30
F4 28 J6 A 31
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1J
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1M 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1O
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA1 35 Engine Room Main Wire and Instrument Panel Wire (Behind the Reinforcement LH)
: Ground Points
Code See Page Ground Points Location
EA 34 Front Right Fender Apron
EB 34 Front Left Fender Apron
IE 35 Left Kick Panel
62
SCION xB (EM0091U)
Turn Signal and Hazard Warning Light
IF
W–B
10AGAUGE
FLSH Relay
10AHAZ
LH
RHTurn
1
5
1
5
3
22
3
EB EA BJ
1B7 1B6 1S8 1T5 1F14 1F9
61 5
3
4
5 7
13
1M11M3
W–B
2
W–B
W–B
W–B
W–B
G–B
G–Y
G–B
G–B
G–Y
G–Y
G–B
G–Y
W–B
W–B
1O2
6
EL ER+BIG
LL LR
1J4
EHW
8
2
1
IE
I12
G–O
W–B
W–B
W–B
18
C 8
BK
R 8
R 7
Turn
Turn1P9
1G10
G–O
F 5
F 6
A
A
C
C
G–B
G–Y
1
2
1
2
S 2
S 1
A
J 1
C
G–Y
G–B
W–B
W–B
W–B
W–B
W–B
W–B
BR
Combination SW
Fron
t Tur
n S
igna
lLi
ght L
H
Fron
t Tur
n S
igna
lLi
ght R
H
Inte
grat
ion
Con
trol a
nd P
anel
JunctionConnector
Rea
r C
ombi
natio
nLi
ght L
H
Rea
r C
ombi
natio
nLi
ght R
H
Sid
e Tu
rnS
igna
l Lig
ht L
H
Sid
e Tu
rnS
igna
l Lig
ht R
H
Haz
ard
SW
Off
On
Turn
RH
Turn
LH
Com
bina
tion
Met
erC
6
21
1M2
7
GND
(BAT)(IG)
SCION xB (EM0091U)
63
: Parts Location
Code See Page Code See Page Code See Page
C6 30 I12 30 S1 29
C8 30 J1 31 S2 29
F5 28 R7 33
F6 28 R8 33
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1B 24 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
1F
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1G
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1J
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1M
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1O
1P
1S24 Floor Wire and Instrument Panel J/B (Lower Finish Panel)
1T24 Floor Wire and Instrument Panel J/B (Lower Finish Panel)
: Ground Points
Code See Page Ground Points Location
EA 34 Front Right Fender Apron
EB 34 Front Left Fender Apron
IE 35 Left Kick Panel
IF 35 Instrument Panel Brace LH
BJ 36 Rear Quarter Panel Inner LH
BK 36 Rear Quarter Panel Inner RH
64
SCION xB (EM0091U)
Interior Light
R–W
R–W
L–Y
2
1A4
1G12
1
1G5
1S3
1G4
1S1
1
2
OFF
ON
DO
OR
1S5
1 1 1
L–Y
R
R–Y
R–W
D 7
D 8
D 6
I14
R–W
15ADOME
1
L–Y
L–Y
2
1
D 5
B 5
Doo
r
BC14
BL
R–W
W–B
1L4 1L8
IB23
D 4
C 6
7 5 4
PCTY DCTY LPR
–Y
R
R–W
R–Y
R–W
R
24 15
1
R–W R–W R–W
Bac
k D
oor
Cou
rtesy
SW
Com
bina
tion
Met
er
Door Lock Control Relay
Doo
r C
ourte
sy S
WFr
ont L
H
Doo
r C
ourte
sy S
WFr
ont R
H
Doo
r C
ourte
sy S
WR
ear
LH
Doo
r C
ourte
sy S
WR
ear
RH
Interior Light
(BAT)
SCION xB (EM0091U)
65
: Parts Location
Code See Page Code See Page Code See Page
B5 32 D5 32 D8 32
C6 30 D6 32 I14 32
D4 30 D7 32
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1A 24 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
1G25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1L25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1S 24 Floor Wire and Instrument Panel J/B (Lower Finish Panel)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IB2 35 Floor Wire and Instrument Panel Wire (Behind the Reinforcement LH)
BC1 36 Back Door No.1 Wire and Floor Wire (Right Rear Side Quarter Pillar)
: Ground Points
Code See Page Ground Points Location
BL 36 Back Door Center
66
SCION xB (EM0091U)
Taillight and Illumination
10ATAIL
1M4
OFF
Tail
Head
C 8
10
13
R 2
( A) ,
R 3
( B)
2
2
1
2
1
1
4
1
4
BC2
BKEAEB
B
B
1B12 1B13 1S9
1M9
L 1
W–G
R10
G–W
W–B
G
G–O
GG G
4
W–B
W–B
W–B
W–B
BC2
B
R 9
G
R 7
W–B
G
2
1
W–B
G
2
1
G
F 6
W–B
G
1
2
BL
G
R 8
B B
W–B
W–B
5 1N
W–G
G
A10
B5
Ligh
tC
ontro
l SW
F 5
BJ
J 9
Tail
Tail
5 BE1 BE16
BE12 BE13
W–B
W–B
W–B
W–B
Com
bina
tion
SW
Fron
t Par
king
Lig
ht L
H
Fron
t Par
king
Lig
ht R
H
Junction ConnectorLi
cens
eP
late
Lig
ht
Rad
io a
nd P
laye
r
Rea
r C
ombi
natio
n Li
ght L
H
Rea
r C
ombi
natio
n Li
ght R
H
Rea
r S
ide
Mar
ker
Ligh
t LH
Rea
r S
ide
Mar
ker
Ligh
t RH
G
G
(BAT)
W–B
1K9
10
1
G
Com
bina
tion
SW
C 7
C6
A7
GND
SWG
Rad
io a
nd P
laye
rR
2( A
) , R
18( C
)
LG
IF
W–B
SCION xB (EM0091U)
67
3
1
1P1
W–G
GW
–G
1J6
1J2
W–G
G
A 7
J 6(
A), J
7( B
)
W–G
BD BD
AF
W–G
R 6
G
4
1R9
G
1
W–G
W–B
W–B
IE
14 1P
6 5
10 1F
26
27
A/T
Shi
ft Le
ver
Illum
inat
ion
Junc
tion
Con
nect
or
Rheostat
Inte
grat
ion
Con
trol a
nd P
anel
I13
Illum
inat
ion
5
4
3
10AGAUGE
1L3
W–G
R–B
R–B
JunctionConnector
J 4(A), (B)
Combination MeterC 6
Illum
inat
ion
1G13
1 23
15ADOME
2
1
1G12
1A4
L–Y
R–B
L–Y
R–B
L–Y
R–B
IF
21
BR
BR
1R71N2 1O2
(IG)(BAT)
4
5
∗ 2 : From Dec. 2005 Production∗ 1 : Before Dec. 2005 Production
W–G
1K8
G
Pas
seng
er S
eat B
elt
War
ning
Lam
p
P15
5 1K
W–B
(∗2)BC(∗1)AB
(∗1)AB(∗2)BC
CPU
68
SCION xB (EM0091U)
Taillight and Illumination
: Parts Location
Code See Page Code See Page Code See Page
A7 30 J4 B 31 R6 31
C6 30 J6 A 31 R7 33
C7 30 J7 B 31 R8 33
C8 30 J9 32 R9 33
F5 28 L1 32 R10 33
F6 28 P15 31 R18 31
I13 30 R2 A 31
J4 A 31 R3 B 31
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1A24 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
1B24 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
1F
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1G
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1J
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1L
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1K
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1M
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1N
1O
1P
1R
1S 24 Floor Wire and Instrument Panel J/B (Lower Finish Panel)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
BC2 36 Back Door No.1 Wire and Floor Wire (Right Rear Side Quarter Pillar)
BE1 36 Floor Wire and Lamp Wire (Back Panel Center)
: Ground Points
Code See Page Ground Points Location
EA 34 Front Right Fender Apron
EB 34 Front Left Fender Apron
IE 35 Left Kick Panel
IF 35 Instrument Panel Brace LH
BJ 36 Rear Quarter Panel Inner LH
BK 36 Rear Quarter Panel Inner RH
BL 36 Back Door Center
SCION xB (EM0091U)
69
Memo
70
SCION xB (EM0091U)
Stop Light
10ASTOP
1B8
1
2
1B2
1T3
C
G–W
W–B
1
3
1
3
C
C
BK
G–Y
G–R
G–W
G–W
W–B
W–B
R 7
R 8
H 8
S 8G
–W
2
1
J 9
BJ
W–B
BL
BC24
W–B
W–B
W–B
Sto
p
Sto
p
C
G–W
2
G–W
N 4
G–W
BC23
Hig
h M
ount
edS
top
Ligh
t
JunctionConnector
Noi
se F
ilter
(S
top
Ligh
t and
Rea
r W
indo
w D
efog
ger
No.
2)
Rea
r C
ombi
natio
nLi
ght L
H
Rea
r C
ombi
natio
nLi
ght R
H
Stop Light SW
(BAT)
SCION xB (EM0091U)
71
: Parts Location
Code See Page Code See Page Code See Page
H8 32 N4 33 R8 33
J9 32 R7 33 S8 31
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1B 24 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
1T 24 Floor Wire and Instrument Panel J/B (Lower Finish Panel)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
BC2 36 Back Door No.1 Wire and Floor Wire (Right Rear Side Quarter Pillar)
: Ground Points
Code See Page Ground Points Location
BJ 36 Rear Quarter Panel Inner LH
BK 36 Rear Quarter Panel Inner RH
BL 36 Back Door Center
72
SCION xB (EM0091U)
Back–Up Light
10AGAUGE
1E5
1E9
1S7
A
W–B
BJ
W–B
R–W
R–W
R–B
R–B
R–B
R–B
R–B
19 IF1
2
1 R 7
IF19
A
1
A
2
R 8
J 9
BK
W–B
Bac
k–U
p
Bac
k–U
pJu
nctio
nC
onne
ctor
Rea
r C
ombi
natio
nLi
ght L
H
Rea
r C
ombi
natio
nLi
ght R
H
(IG)
2
3
Bac
k–U
pLi
ght S
W
B 1
Bac
k–U
pLi
ght S
W
A 3
2
1
( M/T
)( M
/T)
R–W
R–B
( A/T
)( A
/T)
SCION xB (EM0091U)
73
: Parts Location
Code See Page Code See Page Code See Page
A3 28 J9 32 R8 33
B1 28 R7 33
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1E 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1S 24 Floor Wire and Instrument Panel J/B (Lower Finish Panel)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IF1 35 Engine Wire and Instrument Panel Wire (Behind the Glove Box)
: Ground Points
Code See Page Ground Points Location
BJ 36 Rear Quarter Panel Inner LH
BK 36 Rear Quarter Panel Inner RH
168
SCION xB (EM0091U)
I GROUND POINT
11E
B–W
W–B
BR
Engine ControlModule
EB
BRData LinkConnector 3
(E01)
(E02)
(E03)
Front Parking LightRH
Brake Fluid LevelWarning SW
Ignition Coil andIgniter No. 1
EFI Relay
Front Parking LightLH
Side Turn SignalLight RH
Front Fog Light RH
A/C Condenser FanResistor
FAN NO. 2 Relay
Skid Control ECUwith Actuator W
–B
1
1
EA
W–B
W–B
W–B
W–B
W–B
Front Wiper Motor
W–B
W–B
W–B
W–B
W–B
W–B
W–B
IF115
1P7
BR
BR
W–B
BR
BR
BR
W–B
(GND1)
(GND2)
ST RelayW–B
(SG)
Ignition Coil andIgniter No. 3
W–B
Ignition Coil andIgniter No. 2
W–B
Ignition Coil andIgniter No. 4
W–BW
W–B
1
Front Turn SignalLight LH
W–B
Idle Air ControlValve
(E1)
BR
BR
ED
W–B
W–B
W–B
W–B
W–B
Side Turn SignalLight LH
Front Fog Light LH
EC
Front Turn SignalLight RH
BR
Canister Pump ModuleW–B 4
IB1
IF110
W–B
W–BHTR SUB1 Relay
B–W A/C MagneticValve
1
EA13
W–B
W–B
W–B
SCION xB (EM0091U)
169
I
W–B
W–B
W–B
W–B1P Door Control
Receiver
(TB)
IE
2
1P
1M
PWR Relay
FLSH Relay
Shift Lock ControlSW
(CG)
(E1)
(E2)
Rear WindowDefogger Relay
Rheostat
Combination SW
(ED) 1D2
1D3
1P17
1N11
W–B
W–B
W–B
W–B
W–B
W–B
W–B
Airbag SensorAssembly
Data LinkConnector 3
1P14
1K3
1K1
W–B
Unlock Warning SW
HTR Relay
W–B
1O2
1M6W–B
W–B
15
W–B
O/D Main SW131P
W–B
(E)
IntegrationControl and Panel
Cigarette Lighter
Remote ControlMirror SW
IntegrationControl and Panel
Blower ResistorW–B
W–B
W–B
W–B
W–B
Door Lock ControlRelay
W–B
W–B
1N10
Door Lock ControlSW Front RH
Door LockControl SWFront LH
(E)W–B
W–B
W–B
(E)
W–B
W–B
W–B
W–B
W–B
W–B
W–B W–B
W–B
C
C
IG18
IC17
W–B
Combination SW
Power WindowMaster SW
Door Key Lock andUnlock SW Front LH
Door Key Lock andUnlock SW Front RH
Door UnlockDetection SWFront LH
(EW)
IH14
16W–B
C C
JunctionConnector
J10
OccupantClassification ECU
W–BIB15
1K11
1K5
(ILL–)PassengerSeat BeltWarning Lamp
W–B
W–B
(E)
170
SCION xB (EM0091U)
I GROUND POINT
IF
W–B
W–B
W–B
IG
W–B
W–B
Radio and Player
W–B
W–B
W–B
A/C Amplifier
Air Inlet ServoMotor
TRAC OFF SW
Steering Sensor
Headlight Relay
BR BR
BR
W–B
W–B
(E)
CombinationMeter
IntegrationControl andPanel
Yaw Rate Sensor
IB27
W–B
Rear Window Defogger
BM
B
(ES)
W–B
Rear Side MarkerLight RH
Rear Side MarkerLight LH
Rear CombinationLight RH
W–B W–B
W–B
W–B
Rear CombinationLight LH
W–B
BK
BE16
BE15
BA16
BB16
BHBI
BJ
Back Door Opener SW
(ACT–)
(E1)
W–B
High Mounted StopLight
License Plate Light
W–B
W–B
BC24
BL
W–B
W–B
W–B
W–B
W–B
W–B W–B
W–B
W–B
W–B
W–B
Back DoorCourtesy SW
W–B
W–B
W–B
W–B
W–B
W–B
Fuel Pump
Inlet Air PositionDetection SW
Fuel Sender
Back DoorLock Motor
W–BEngine ControlModule
(EC)
Buckle SW LHSeat Position Sensor
W–B
SCION xB (EM0091U)
171
I
: Parts Location
Code See Page Code See Page Code See Page
J10 32
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1D
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1E
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1K
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1M 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1N
25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1O
1P
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
EA1 34 Engine Wire and Engine Room Main Wire (Inside of Engine Room R/B)
IB135 Floor Wire and Instrument Panel Wire (Behind the Reinforcement LH)
IB235 Floor Wire and Instrument Panel Wire (Behind the Reinforcement LH)
IC1 35 Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
IF1 35 Engine Wire and Instrument Panel Wire (Behind the Glove Box)
IG1 35 Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
IH1 35 Instrument Panel Wire and A/C Sub Wire (Right Side of A/C Unit)
BA1 36 Rear Door No.1 LH Wire and Floor Wire (Center Pillar LH)
BB1 36 Rear Door No.1 RH Wire and Floor Wire (Center Pillar RH)
BC2 36 Back Door No.1 Wire and Floor Wire (Right Rear Side Quarter Pillar)
BE1 36 Floor Wire and Lamp Wire (Back Panel Center)
: Ground Points
Code See Page Ground Points Location
EA 34 Front Right Fender Apron
EB 34 Front Left Fender Apron
EC34 Engine Block
ED34 Engine Block
IE 35 Left Kick Panel
IF 35 Instrument Panel Brace LH
IG 35 Right Kick Panel
BH 36 Rear Door LH
BI 36 Rear Door RH
BJ 36 Rear Quarter Panel Inner LH
BK 36 Rear Quarter Panel Inner RH
BL 36 Back Door Center
BM 36 Back Door LH
172
SCION xB (EM0091U)
J POWER SOURCE (Current Flow Chart)
The chart below shows the route by which current flows from the battery to each electrical source(Fusible Link, Circuit Breaker, Fuse, etc.) and other parts.
4
S1Starter
Parts Code of Location
7. 5A DRL
Code of Location
Electrical Source
Example
50A HTR SUB1
40A ABS NO.1
30A RDI
40A AM1
30A POWER
25A D/L
7.5A ECU-B
10A HAZ
10A STOP
10A TAIL
7.5A OBD
*1
* 1:10A H-LP LH / H-LP LO LH* 2:10A H-LP RH / H-LP LO RH
*2
15A AM2
30A ST
15A HORN
15A DOME
60A MAIN
120A ALTBattery 3
1
2
40A HTR 2
60A ABS 3
30A DEF 2
15A EFI 1
2
13
1 : Engine Room R/B (See Page 22)
4 : Fuse Block (F15 on See Page 30)
2 : Instrument Panel J/B (See Page 24)
[LOCATION]
SCION xB (EM0091U)
173
J
3 : Fusible Link Block (See Page 23)
15A ACC
7.5A ECU-IG
10A GAUGE
20A WIPER
15A FOG
Ignition SW(AM1) I10
R4
2
7.5A A.CHTR Relay(Point Side) 22
7.5A I/UPRear Window DefoggerRelay (Point Side) 4
174
SCION xB (EM0091U)
J POWER SOURCE (Current Flow Chart)
Engine Room R/B (See Page 22)Fuse System Page
7.5A A/CAir Conditioning
PTC Heater
164
162
10A H–LP LH/H–LP LO LHHeadlight
Wireless Door Lock Control
58
90
10A H–LP RH/H–LP LO RHHeadlight
Wireless Door Lock Control
58
90
15A AM2
ABS, TRAC and VSC
Charging
Combination Meter
Electronically Controlled Transmission and A/T Indicator
Engine Control
Seat Belt Warning (From Dec. 2005 Production)
SRS (Before Dec. 2005 Production)
SRS (From Dec. 2005 Production)
Starting and Ignition
104
46
150
98
48
130
114
118
42
15A DOME
ABS, TRAC and VSC
Audio System
Combination Meter
Door Lock Control
Engine Control
Headlight
Interior Light
Key Reminder
Light Reminder
Seat Belt Warning (Before Dec. 2005 Production)
Seat Belt Warning (From Dec. 2005 Production)
SRS (Before Dec. 2005 Production)
SRS (From Dec. 2005 Production)
Taillight and Illumination
Wireless Door Lock Control
104
146
150
82
48
58
64
126
138
128
130
114
118
66
90
15A EFIElectronically Controlled Transmission and A/T Indicator
Engine Control
98
48
15A HORNHorn
Wireless Door Lock Control
142
90
30A RDI Radiator Fan and Condenser Fan 156
30A ST Starting and Ignition 42
40A ABS NO.1 ABS, TRAC and VSC 104
50A HTR SUB1 PTC Heater 162
Instrument Panel J/B (See Page 24)Fuse System Page
7.5A A.C Two Way Flow Heater 158
∗ These are the page numbers of the first page on which the related system is shown.
SCION xB (EM0091U)
175
J
Fuse System Page
7.5A ECU–B
ABS, TRAC and VSC
Multiplex Communication System (CAN)
Seat Belt Warning (From Dec. 2005 Production)
SRS (From Dec. 2005 Production)
104
110
130
118
7.5A ECU–IG
ABS, TRAC and VSC
Air Conditioning
Multiplex Communication System (CAN)
PTC Heater
Radiator Fan and Condenser Fan
Two Way Flow Heater
104
164
110
162
156
158
7.5A OBDElectronically Controlled Transmission and A/T Indicator
Engine Control
98
48
10A GAUGE
ABS, TRAC and VSC
Air Conditioning
Audio System
Back–Up Light
Charging
Combination Meter
Door Lock Control
Electronically Controlled Transmission and A/T Indicator
Engine Control
Fog Light
Key Reminder
Light Reminder
Power Window
PTC Heater
Rear Window Defogger
Seat Belt Warning (Before Dec. 2005 Production)
Seat Belt Warning (From Dec. 2005 Production)
Shift Lock
SRS (Before Dec. 2005 Production)
SRS (From Dec. 2005 Production)
Taillight and Illumination
Turn Signal and Hazard Warning Light
Two Way Flow Heater
Wireless Door Lock Control
104
164
146
72
46
150
82
98
48
60
126
138
78
162
144
128
130
124
114
118
66
62
158
90
10A HAZ Turn Signal and Hazard Warning Light 62
10A STOP
ABS, TRAC and VSC
Electronically Controlled Transmission and A/T Indicator
Engine Control
Shift Lock
Stop Light
104
98
48
124
70
∗ These are the page numbers of the first page on which the related system is shown.
176
SCION xB (EM0091U)
J POWER SOURCE (Current Flow Chart)
Fuse System Page
10A TAIL
Engine Control
Light Reminder
Taillight and Illumination
48
138
66
15A ACC
Audio System
Cigarette Lighter
Remote Control Mirror
146
140
136
15A FOG Fog Light 60
20A WIPERFront Wiper and Washer
Rear Wiper and Washer
74
76
25A D/LDoor Lock Control
Wireless Door Lock Control
82
90
30A DEF Rear Window Defogger 144
30A POWER Power Window 78
40A HTR
Air Conditioning
PTC Heater
Two Way Flow Heater
164
162
158
Fusible Link Block (See Page 23)Fuse System Page
60A ABS ABS, TRAC and VSC 104
60A MAIN
ABS, TRAC and VSC
Charging
Combination Meter
Electronically Controlled Transmission and A/T Indicator
Engine Control
Seat Belt Warning (From Dec. 2005 Production)
SRS (Before Dec. 2005 Production)
SRS (From Dec. 2005 Production)
Starting and Ignition
104
46
150
98
48
130
114
118
42
120A ALTABS, TRAC and VSC
Charging
104
46
Fuse Block (F15 on See Page 30)Fuse System Page
7.5A I/UP Rear Window Defogger 144
∗ These are the page numbers of the first page on which the related system is shown.
SCION xB (EM0091U)
177
Memo
178
SCION xB (EM0091U)
K CONNECTOR LIST
21
BlackA 1
1 2
GrayA 2
1 2 3 4 5
6 7 8 9
GrayA 3
12
A 4
12
BlackA 5
21
A 6
23 41
BlueA 7
2 3 4 5 6 7 81
A 8
1 2 3 4 5 6
7 8 9 101112
A B
YellowA 9
242523 26222021 2827
1 2 3 4 5 6
7 8 9 1011121314151617
1819
A B
YellowA10
1 2 3 4 5 6
7 8 9 101112
A B
YellowA11
1 2 3 4
YellowA12
1 2 3 4
YellowA13
1
A14
12
A15
12
A16
21
15 16
4
18
5
19
6
20
7
21
8
22
9
23
10
24
11
25
13
27
14
28
3
17
12
26
A17
21
13 14
3
15
4
16
5
17
6
18
7
19
8
20
9
21
10
22
11
23
12
24
A18
43
6 7
5
11
1
12
2
15
98
1413
10
YellowA19
11
1 3 4 5 6 7 8 9
13 14 15 16 17 18 19
21 23 24 25 26 27 28 29 30
20
10
22
12
2
YellowA20
43
6 7
5
11
1
12
2
15
98
1413
10
YellowA21
1 2
GrayB 1
SCION xB (EM0091U)
179
K
1 2
GrayB 2
1
2
BlackB 3
1 2
3 4
BlackB 4
23 41
B 5
1 2
B 6
1 2 3
4 5 6
B 7
1 2 3
B 8
1 2 3
654
GrayB 9
1 2
B10
1 2
BlackC 1
1 2
BlackC 2
1 2
BlackC 3
1
2
C 4
1 2
C 5
422
321 241
262362
277
288
3010
3111
3212
3313
3515
3616
3717
3818
2995
25 3414
3919
4020
C 6
7 8
1 2
12
4 5 6
9 1110
3
BlackC 7
1 2 3 4
5 6 7 8 9 10 11 12 13
C 8
1 2 3 4 5 6 7 8 9 10
BlackC 9
1 2 3 4 56 7 8 9 10
BlackC10
16 15 14 13 12 11 10 9
8 7 6 5 4 3 2 1
D 1
23 41
D 2
54321
D 3
180
SCION xB (EM0091U)
K CONNECTOR LIST
111032 121
15 161413 17
4 5 6 7 8 9
18 19 20 21 22 23 24 25 26
D 4
1
D 5
1
D 6
1
D 7
1
D 8
1 2 3 4 5 6
BlackD 9
1 2 3 4 5 6
BlackD10
6 95 8
14
7
15
4
17
21
1816
3
11 1310 12
D11
1 2
3 4 5 6
D12
1 2
BlackD13
1 2
BlackD14
1 2 3 4 5
6 7 8 9 10
GrayE 1
21
GrayE 2
1
17
292827 3126
1918
98
20
10
21
30
11
76
13 14 15 16
22 23 24
12
432 5
25
E 3
16
3231 3528
2017
9 10
34
11
65
13 14 15
23 24 26
12
321 4
27
29
18
7
30
19
8
21 22 25
33
BlackE 4
1
17
29 3428
1918
98
20
10
21
33
11
76
13 14 15 16
22 23 26
12
432 5
2724 25
30 31 32
E 5
1
19
333231 3528
2320
118 12
34
13
76
15 16 17 18
24 25 26
14
432 5
27
29
21
9
30
22
10
E 6
1 2
YellowF 1
1 2
YellowF 2
1 2
BrownF 3
SCION xB (EM0091U)
181
K
1 2
BrownF 4
1 2 3
F 5
1 2 3
F 6
1 2 3
4 5
BlackF 7
BlackF 8
(See Page 23)
11
BlackF 9
35
1 2
F10
1 2 3
F11
1
2
GrayF12
1
2
GrayF13
1 2 3
4 5
Dark GrayF14
1 2 3 4
F15
1 2
YellowF16
1 2
YellowF17
1 2 3
BlackG 1
1
G 2
1
2 3
H 1
1
2 3
H 2
1 2
3 4
GrayH 3
1
BlackH 4
1
BlackH 5
35
1 2
H 6
21
3 4
GrayH 7
1 2
GrayH 8
1 2 3
BlackI 1
1 2 3 4
BlackI 2
1 2 3 4
GrayI 3
1 2 3 4
BlackI 4
1 2 3 4
GrayI 5
1 2
BlackI 6
1 2
GrayI 7
1 2
BlackI 8
1 2
GrayI 9
1 24 5
36
I10
1 32
I11
1 2 3 4
GrayI12
1 2 3 4 5
6 7 8 9 10
I13
182
SCION xB (EM0091U)
K CONNECTOR LIST
*1 : Before Dec. 2005 Production
A A B C CA A B B B B C C
A A B C CA A B B B B C C
A A B C CA A B B B B C CA A B B C C
D D E E F F
A A B B C C
D D E E F F
A
BB
AA
BB
AA
BB
AA
BB
AA
BB
A A
B
C
FF
CC
FF
CB
EE
BB
EE
BA
DD
A A
D
A A B B C C
D D E E F F
A A B C CA A B B B B C C A A B B C C
D D E E F F
C
EE
CC
EE
CC
EE
BB
ED
BA
DD
A A
D
1
2
I14
1 32
I15 J 1 Black
J 2 Black
J 3
(*1)J 4
(*2)J 4 J 5
J 6 J 7 J 8 J 9
J10
1 2
BlackK 1
1 2
BlueL 1
54321
BlackM 1
1 2
GrayN 1
1 2
N 2
1 2
N 3
1 2
N 4
1
GrayO 1
1
O 2
9
1 2 3
16
4 5 86 7
1011 15141213
O 3
1
6
2
7
3
8 9 10 11 12 13 14
4
15
5
16
O 4
1 2 3 4 57 8 9 101112
6
BlackO 5
1 2 3 4 57 8 9 101112
6
GrayO 6
1 2 3
BlackO 7
*2 : From Dec. 2005 Production
SCION xB (EM0091U)
183
K
1 2 3
BlackO 8
1 2 3
BlackO 9
1 2 3
BlackO10
1 2 3
BlackP 1
1 2 3
BlackP 2
1
P 3
1 2
P 5
1 2 3 4 5
P 6
1 2 3 4 5
P 7
1 2 3 4 5
P 8
1 2
3 4 5 6
P 9
1 2
3 4 5 6
P10
1 2
P11
1 2
P12
21
YellowP13
21
YellowP14
1 2 3 4 5 6
P15
21
GrayR 1
1 2 3 4
5 6 7 8 9 10
BlueR 2
1 2
3 4 5 6
R 3
3
5
1 2
R 4
1 2 3 4 5 6 7 8 9 10
R 5
1 2
3 4 5 6
R 6
1 2
3 4 5 6
R 7
1 2
3 4 5 6
R 8
1 2
R 9
1 2
R10
1
2
R11
1
2
R12
1
BlackR13
1
BlackR14
1 2
R15
12
34
56
R16
184
SCION xB (EM0091U)
K CONNECTOR LIST
12
34
56
R17
1 2 3 4 5 6 7 8 9 10
11 12 13 14 15 16 17 18 19 20
R18
1 2
BlackS 1
1 2
BlackS 2
31 32
213 4 5 6 7 8 9 10 11 12 13 14 15 1617 18 19 20 21 22 23 24 25 26 27 28 29 30
33 34 35 36 37 38 39 40 41 42 43 44 45 46
BlackS 3
1
S 4
1
BlackS 5
54321
S 6
10987654321
GrayS 7
1
3
2
4
BlackS 8
1 2 3 4
GrayS 9
1 2 3
BlackT 1
1 2
BlackT 2
1 2 3 4 5
BlackT 3
1 2
BlueT 4
1 2
BlueT 5
1 2
U 1
1 2
BlackV 1
1 2
BlackV 2
1 2 3
BlackW 1
54321
BlackY 1
SCION xB (EM0091U)
185
Memo
186
SCION xB (EM0091U)
K CONNECTOR LIST
1 2
3 4
8 9
13
5
10
14
6 7
11 12
15
1
34
89
13
5
10
14
2
67
1112
15
1 2 12
1 2 3 4
5 6 7 8 9
10 11 12 13 14
1234
56789
1011121314
11
2221
109
2019
87
1817
65
1615
43
1413
1 2
12
9
20
8
19
7
18
6
17
5
16
4
15
3
14
1
12
11
22
2
13
10
21
2 1
4 31 2
3 4
7
1413
65
1211
43
109
21
8
7
14
6
13
5
12
4
11
3
10
2
9
1
81 2 3 4 56 7 8 9 10 11 12 13
1234513 6789101112
EA1 EB1 Gray
IA1
IA2 IA3 Yellow
IB1 Gray IB2 Gray
SCION xB (EM0091U)
187
K
23 41 12
4 3
1 2 34 5 6 7 8
1238 7 6 5 4
1 2 3 4 5 6 7 8 9 10
11 1213141516171819 20
12345678910
11121314151617181920
7
1413
65
1211
43
109
21
8
7
14
6
13
5
12
4
11
3
10
2
9
1
8
1 2 3
4 5 6 7 8 9
3 2 1
456789
7
1413
65
1211
43
109
21
8
7
14
6
13
5
12
4
11
3
10
2
9
1
8
1 2
3 4 5 6123456
1 2
3 4
5 6
12
34
56
1 2
3 4
5 6
12
34
56
1 2 3
4 5 6 7 8 9
3 2 1
456789
7
1413
65
1211
43
109
21
8
7
14
6
13
5
12
4
11
3
10
2
9
1
8
IE1 BlueID1
IF1 IF2
IG1 IG2
IH1 BA1 BB1
IC1 IC2
188
SCION xB (EM0091U)
K CONNECTOR LIST
1 2
3 4
5 6
12
34
56
23 41 12
4 3
1 1
1 2 3
4 5 6
123
456
BC2 GrayBC1 BD1
BE1
SCION xB (EM0091U)
189
Memo
L PART NUMBER OF CONNECTORS
Code Part Name Part Number Code Part Name Part Number
SCION xB (EM0091U)
Note: Not all of the above part numbers of the connector are established for the supply.
190
A 1 A/C Condenser Fan Resistor 90980–10928
A 2 A/C Magnetic Valve 90980–11156
A 3
A/T Indicator Light SW
90980–11784A 3 Back–Up Light SW 90980–11784
Park/Neutral Position SW
A 4 ABS Speed Sensor Front LH90980–11002
A 5 ABS Speed Sensor Front RH90980–11002
A 6 A/C Thermistor 90980–11918
A 7A/T Shift Lever Illumination
90980–10795A 7O/D Main SW
90980–10795
A 8 Air Inlet Servo Motor 90980–11989
A 9 Airbag Sensor Assembly 90980–11869
A10 Airbag Sensor Assembly 90980–11872
A11 Airbag Sensor Assembly 90980–11867
A12Airbag Squib (Front Passenger’s AirbagAssembly) 90980–12160
A13 Airbag Squib (Steering Wheel Pad)90980–12160
A14 Antenna Amplifier 90980–10870
A15 ABS Speed Sensor Rear LH90980–10859
A16 ABS Speed Sensor Rear RH90980–10859
A17 A/C Amplifier 90980–12410
A18 A/C Amplifier 90980–12200
A19 Airbag Sensor Assembly 90980–12449
A20 Airbag Sensor Assembly 90980–12391
A21 Airbag Sensor Assembly 90980–12450
B 1 Back–Up Light SW 90980–11250
B 2 Brake Fluid Level Warning SW 90980–11207
B 3 Blower Motor 90980–10214
B 4 Blower Resistor 90980–11136
B 5Back Door Courtesy SW
90980–10795B 5Back Door Lock Motor
90980–10795
B 6 Back Door Opener SW 90980–12063
B 7Buckle SW LH
90980–12257B 7Seat Position Sensor
90980–12257
B 8Buckle SW RH
90980–11020B 8Occupant Detection Sensor
90980–11020
B 9Buck SW LH
90980–11194B 9Seat Position Sensor
90980–11194
B10 Buck SW RH 90980–11156
C 1 Camshaft Position Sensor 90980–10947
C 2 Camshaft Timing Oil Control Valve 90980–11162
C 3 Crankshaft Position Sensor 90980–12028
C 4 Cigarette Lighter 90980–10760
C 5 Clutch Start SW 90980–10825
C 6 Combination Meter 90980–12169
C 7 Combination SW 90980–12183
C 8 Combination SW 90980–12007
C 9 Combination SW 90980–12008
C10 Canister Pump Module 90980–12380
D 1 Data Link Connector 3 90980–11978
D 2Defroster Mode Detection SW
90980–10795D 2Inlet Air Position Detection SW
90980–10795
D 3 Door Control Receiver 90980–11909
D 4 Door Lock Control Relay 90980–12203
D 5 Door Courtesy SW Front LH
90980–10871D 6 Door Courtesy SW Front RH
90980–10871D 7 Door Courtesy SW Rear LH
90980–10871
D 8 Door Courtesy SW Rear RH
D 9
Door Key Lock and Unlock SW Front LH
90980–11858
D 9 Door Lock Motor Front LH
90980–11858Door Unlock Detection SW Front LH 90980–11858
D10Door Key Lock and Unlock SW Front RH
D10Door Lock Motor Front RH
D11Door Lock Control SW Front LH
90980–12122D11Power Window Master SW
90980–12122
D12 Door Lock Control SW Front RH 90980–10797
D13 Door Lock Motor Rear LH90980–11019
D14 Door Lock Motor Rear RH90980–11019
E 1Electronically Controlled TransmissionSolenoid 90980–11658
E 2 Engine Coolant Temp. Sensor 90980–10735
E 3 Engine Control Module 90980–12142
E 4 Engine Control Module 90980–12146
E 5 Engine Control Module 90980–12144
E 6 Engine Control Module 90980–12145
F 1 Front Airbag Sensor LH90980–12401
F 2 Front Airbag Sensor RH90980–12401
F 3 Front Fog Light LH90980–11096
F 4 Front Fog Light RH90980–11096
F 5Front Parking Light LH
90980–11020
F 5Front Turn Signal Light LH
90980–11020
F 6Front Parking Light RH
90980–11020
F 6Front Turn Signal Light RH
F 7 Front Wiper Motor 90980–11599
F 8 Fusible Link Block 82620–52011
F 9 Fusible Link Block 90980–11775
F10 Front Fog Light Relay 82660–20340
F11 Front Fog Light SW 90980–10489
F12 Front Door Speaker LH90980–10935
F13 Front Door Speaker RH90980–10935
F14Fuel Pump
90980–11077F14Fuel Sender
90980–11077
L
Code Part Name Part Number Code Part Name Part Number
SCION xB (EM0091U)
191
F15 Fuse Block 82610–20080
F16 Front Airbag Sensor LH90980–12490
F17 Front Airbag Sensor RH90980–12490
G 1 Generator 90980–11349
G 2 Generator 90980–09373
H 1 Headlight LH90980–11314
H 2 Headlight RH90980–11314
H 3 Heated Oxygen Sensor (Bank 1 Sensor 1) 90980–10869
H 4 Horn (High)90980–10619
H 5 Horn (Low)90980–10619
H 6 Headlight Relay 82660–20340
H 7 Heated Oxygen Sensor (Bank 1 Sensor 2) 90980–11028
H 8 High Mounted Stop Light 90980–11148
I 1 Idle Air Control Valve 90980–11145
I 2 Ignition Coil and Igniter No.1
90980–11885I 3 Ignition Coil and Igniter No.2
90980–11885I 4 Ignition Coil and Igniter No.3
90980–11885
I 5 Ignition Coil and Igniter No.4
I 6 Injector No.1
90980–11875I 7 Injector No.2
90980–11875I 8 Injector No.3
90980–11875
I 9 Injector No.4
I10 Ignition SW 90980–11778
I11 Integration Control and Panel 90980–10908
I12 Integration Control and Panel 90980–11013
I13 Integration Control and Panel 90980–10993
I14 Interior Light 90980–10935
I15 Integration Control and Panel 90980–10908
J 1 Junction Connector 90980–11542
J 2 Junction Connector90980–11661
J 3 Junction Connector90980–11661
J 4 Junction Connector90980–11915
J 5 Junction Connector90980–11915
J 6 Junction Connector90980–11661
J 7 Junction Connector90980–11661
J 8 Junction Connector
90980–11542J 9 Junction Connector 90980–11542
J10 Junction Connector
K 1 Knock Sensor (Bank 1) 90980–11875
L 1 License Plate Light 90980–10825
M 1 Mass Air Flow Meter 90980–11317
N 1 Noise Filter (Ignition) 90980–10843
N 2 Noise Filter (Rear Window Defogger No.1)
90980–10916N 3 Noise Filter (Fuel Pump)
90980–10916
N 4Noise Filter (Stop Light and Rear WindowDefogger No.2)
90980–10916
O 1 Oil Pressure SW 90980–11363
O 2 Option Connector (TVIP) 90980–10871
O 3 Option Connector (IPOD Unit) 90980–12553
O 4 Option Connector (Radio and Player) 90980–12423
O 5 Occupamt Classification ECU 90980–12356
O 6 Occupamt Classification ECU 90980–12357
O 7 Occupamt Classification Sensor Front LH
90980–12353O 8 Occupamt Classification Sensor Rear LH
90980–12353O 9 Occupamt Classification Sensor Front RH
90980–12353
O10 Occupamt Classification Sensor Rear RH
P 1 Power Steering Oil Pressure Sensor90980–10845
P 2 Pressure Sensor90980–10845
P 3 Parking Brake SW 90980–10871
P 5 PTC Heater 90980–10903
P 6 Power Window Control SW Front RH
90980–10789P 7 Power Window Control SW Rear LH 90980–10789
P 8 Power Window Control SW Rear RH
P 9 Power Window Motor Front LH90980–10797
P10 Power Window Motor Front RH90980–10797
P11 Power Window Motor Rear LH90980–10860
P12 Power Window Motor Rear RH90980–10860
P13 Pretensioner LH90980–12253
P14 Pretensioner RH90980–12253
P15 Passenger Seat Belt Warnning Lamp 90980–11986
R 1 Radiator Fan Motor 90980–10928
R 2 Radio and Player 90980–10997
R 3 Radio and Player 90980–10996
R 4 Rear Window Defogger Relay 82660–20340
R 5 Remote Control Mirror SW 90980–11657
R 6 Rheostat
90980–10797R 7 Rear Combination Light LH 90980–10797
R 8 Rear Combination Light RH
R 9 Rear Side Marker Light LH90980–11250
R10 Rear Side Marker Light RH90980–11250
R11 Rear Speaker LH90980–10935
R12 Rear Speaker RH90980–10935
R13 Rear Window Defogger90980–11853
R14 Rear Window Defogger90980–11853
R15 Rear Wiper Motor 90980–10860
R16 Remote Control Mirror LH90980–11587
R17 Remote Control Mirror RH90980–11587
R18 Radio and Player 90980–12460
S 1 Side Turn Signal Light LH90980–11162
S 2 Side Turn Signal Light RH90980–11162
S 3 Skid Control ECU with Actuator 90980–12297
S 4 Starter 90980–09506
S 5 Starter 90980–11400
L PART NUMBER OF CONNECTORS
Code Part Name Part Number Code Part Name Part Number
SCION xB (EM0091U)
Note: Not all of the above part numbers of the connector are established for the supply.
192
S 6 Shift Lock Control SW 90980–11909
S 7 Steering Sensor 90980–12162
S 8 Stop Light SW 90980–11118
S 9 Stereo Jack Adapter 82824–21030
T 1 Throttle Position Sensor 90980–11261
T 2 Turbine Speed Sensor 90980–11156
T 3 TRAC OFF SW 90980–10631
T 4 Tweeter LH
90980–10860T 5 Tweeter RH 90980–10860
U 1 Unlock Warning SW
V 1 VSV (Purge) 90980–11156
V 2 VSC Buzzer 90980–10906
W 1 Washer Motor 90980–10981
Y 1 Yaw Rate Sensor 90980–11904
Memo
SCION xB (EM0091U)
193
SC
ION
xB (E
M0091U
)197 M
1 2 3 4
1 xB
IF1
I 4
9 IF1N
112
B–Y
B
2
A3A4
1
2
60A M
AIN
W–R
W–L
W–L
W–R
B–L
B–G
7 1A
1 1O
1
15A A
M2
120A A
LT
1
AM25 6
2AM1
ST2
IG2
IG1
ACC
1
1O8
1C1
2
1
1
30A S
T
40A A
M1
B1
B
B–Y
B
IG
M
B1
A2
A3
L
A1
1O4
1E5
11
I10
I 5
6 1O 1G8
4 IF1
2
1
3
5
1 1
1
5 EA1
1 B1A
1
EB
EA1
1E6 1A3
1O7
1 EA1
A 3
11 EA1
ED Engine Block
1
B
W–B
B–Y
B–Y
B–R
B–R
G–R
B–R
G–B
B–R
G–O
B–R
G–Y
Y
W–B
W–B
W–B
Y Y
W–B
W–B
Y
B–R
B–R
YY
R–B
B
B
B B–R
B–R
Y Y
W W–B
B–R B–R B–R
B–W
B–W B–Y
B–Y
B–R
R–B
L
G–B L
L
B–R
B
Battery
B–R
STRelay
4
(M/T )
B–Y
(A/T )
P
N
1 3 1 3 1 3 1 3
4 2 4 2 4 2 4 2
Engine Control Module<2–10>
Engine Control Module<2–9>
Engine C
ontrolM
odule<2–8>
A/C
Am
plifier<
18–3>
10A G
AU
GE
B–Y
9
6
1
P o w e r S o u rc e S ta r tin g a n d Ig n it io n C h a rg in g
13 IF2
Front LeftFender Apron
(M/T)
2
1 C 5
W–B
Y
B(A
/T )B
(A/T )
B
B–Y
W–B
I 2
C 6B
(A/T)
(M/T )
Engine ControlModule<2–8>
I 3
16
B(M/T)
B–Y
(M/T )
15 EA1
Charge
40
F 8 (A ), F 9 (B )
Park/N
eutralP
osition SW
Clutch S
tart SW
Com
bination Meter
Fusible Link Block
Generator
Ignition Coil and
Igniter No. 1
Ignition Coil and
Igniter No. 2
Ignition Coil and
Igniter No. 3
Ignition Coil and
Igniter No. 4
Ignition SW
Noise Filter
(Ignition )
Starter
G 1(A), G 2(B)
S 4 (A ), S 5 (B )
IF24
B(A/T)
Engine C
ontrolM
odule<2–8>
11 IF2
B–Y
SC
ION
xB (E
M0091U
)198
M O
VE
RA
LL
EL
EC
TR
ICA
L W
IRIN
G D
IAG
RA
M
1 2 3 4
2 xB (Cont. next page)
N 3
F 8
20
1
2
60A M
AIN
4 3
W–R
W–R
B–L
B–G
7 1A
1 1O
1
15A A
M2
120A A
LT
1
AM25 6
ST2
IG2
1C1
P o w e r S o u rc e E n g in e C o n tro l
2
1 2
1
3
5
1
15A E
FI
1 1
1 1
1H7
EBFront LeftFender Apron
11 1A
2
1
I10 5 1O
Rear QuarterPanel Inner LH
BJ
5
4
M
86 1T 9 1H 1H
EA14
4 1P
7. 5A O
BD
W–B
3W–B
B–Y
B–Y
5
C 6
B
GR
Y–B
Y–R
B–Y
B–R
Y–G
B–R
G–R
B
W–R
B
W–B
G–R
B–R
Y–G
Y–R
Y–B
B–R
B–Y
B–Y
EFI R
elay
C/OPNRelay
W–RBattery
B–R
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Water Tem
p. C
ool
Water Tem
p. H
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1G8
B–R
Malfunction
Indicator Lamp
1
B–R
F14
Combination Meter
Fusible Link Block
Fuel Pum
p
Ignition SW
Noise Filter
(Fuel Pum
p )
6 1O
B–R
GR
B–RB–R
A
B
C
D
E
F
G
H
I
J
K
SC
ION
xB (E
M0091U
)199 M
7 865
(Cont. next page)2 xB (Cont' d)
SG CANL
BR
B
BR
TAC
P–B
Park/N
eutral Position S
W (A
/T )<1–2>
BR
BR
B
(∗1)
Airbag SensorAssembly<14–3><19–3>
9
TCSIL
P–B
W–R
W–R
B
G–R
B–R
Y–G
W
BAT
16
Skid C
ontrol EC
Uw
ith Actuator
<13–5>
Airbag S
ensorA
ssembly
<14–3>
<19–3>
P–B
P–B
13
14 1H
3 1P
7
5 1P
CG
4
W–B
W–B
1P17
2 1O
B
5
B
E n g in e C o n tro l
E 3(A), E 4(B), E 5(C), E 6(D)
(A/T )
Clutch S
tart SW
(M/T )<
1–2>B
–Y
A12
Ignition SW
<1–1>
B
A30
Generator<
1–4>L
C10
Com
bination Meter<
16–3>V
–W
B8
Stop Light S
W<
9–3>G
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B4
(∗1)
(∗1 )
(∗1 )
B B B
11313
322424
B–R
B
B–R
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B–R
B–R
B–R
B–R
B–R
Y–B
Y–R
B–Y
B–O
B–Y
B–W
B–L
B–R
G–R
B–R
W–G
B
BR
BR 13
B
B
B
BR
J 6 (A ), J 7 (B )
BR
B–RB–R
B–R
B–Y
Y–R
Y–B
GR
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G–R
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9 A
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C1 C5C2C25C21D23
1
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B18 B29 A3
IA114
D1D2D5D6
1
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1
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1
22
1
IF11
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1 1E
EC Engine BlockLeft KickPanel
IE
1 B
15
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14 IF2
IF2
BR
L
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B–R
1 IF2
(∗1 )
(∗1 )
(∗1)
1B51D1
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TC TACH COOL HOT BATT
IGSW FC+B PRG OX1A HT1A OX1B HT1B RSD
# 10 # 20 # 30 # 40 STA NSW ALT SPD STP
∗ 1 : Shielded
BR
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Com
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eter<16–3>
15 IF1 Skid Control ECUwith Actuator<13–5>
6
CANH
14
C B
A A A A
I 1
(∗1)
V 1
R
D 1
H 7
H 3
I 6 I 7 I 8 I 9
Data LinkConnector 3
Engine Control Module
Heated O
xygen Sensor
(Bank 1 S
ensor 1 )
Heated O
xygen Sensor
(Bank 1 S
ensor 2 )
Idle Air C
ontrol Valve
Injector No. 1
Injector No. 2
Injector No. 3
Injector No. 4
JunctionC
onnector
VS
V (P
urge )
TS
R–L
12
Skid C
ontrol EC
Uw
ith Actuator
<13–5>
JunctionConnector
J 4(A), (B)
Multiplex
Com
munication
System
(CA
N)<
13–12>
GR
A8
IA27
MREL
30 B
W +B2
A2
B–R
Y–G
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B–Y
9 IF2
B33
CANH
B34
CANL
Multiplex C
omm
unicationS
ystem (C
AN
)<13–11>
B–R
WW
2
17
Occupant
Classification
EC
U<
19–6>
1H12
W
E B (∗3)
E A (∗2)
E A (∗2)
E B (∗3)
∗ 2 : Before Dec. 2005 Production∗ 3 : From Dec. 2005 Production
A
B
C
D
E
F
G
H
I
J
K
A
B
C
D
E
SC
ION
xB (E
M0091U
)200
M O
VE
RA
LL
EL
EC
TR
ICA
L W
IRIN
G D
IAG
RA
M
9 10 11 12
2 xB (Cont' d)
R–W
BR
(∗1 )
BR
A
Com
bination SW
<6–2>
G
2
1
26 C
ED
6 C 4 D7 C
20 C 18 C
BR
BR
BR
BR
Y–R
R–W
R–W
B
BR
(∗1)
3 1
B
2
(∗1 )
2
1
13 C 12 C
R–Y
R–B
R–BIgnition Coil and
Igniters<1–3><1–4>
BR
B
E n g in e C o n tro l
C23C17
G–Y
G–O
C16
G–B
C15
G–R
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BR
ELS1 IGT4 IGT3 IGT2 IGT1 IGF OC1+ OC1–
G2+ E01 E02 E03
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14
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BR
EB1
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W
O
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BR
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(∗1)
W–L
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elay<17–2>
T 1
C 1
B
BR
Engine BlockECEngine Block
C 2
BR
B
BR
W
Cam
shaft Position
Sensor
Cam
shaft Timing O
ilC
ontrol Valve
Crankshaft P
ositionS
ensor
Throttle Position
Sensor
C 3
BR
E2
VCVTA
B7
NEO
VS
kid Control E
CU
with A
ctuator<13–4>
B32
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BB
F/PS
Airbag S
ensorA
ssembly
<14–3>
<19–3>
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Y–R
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Rear W
indowD
efogger Relay <
17–4>B
3 B
ELS2
B–Y
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7. 5A I/U
P
1
Fuse Block
F15
30 C
EKNK
EB12
B
W–B
∗ 1 : Shielded
W
B
IF27
2
1
Knock S
ensor(B
ank 1 )
K 1
W–B
B
BR
B
BR
R–WIF282 IB11 IB1
IB13
4
R–W
R–W
Canister PressureSensor
3
31 A
RR
PTMK
IB19
BRBR
2
5 A
VPMP
PP
8
IB110
BB
9
8 IB1
6 A
MPMP
VV
1
M
W–B
B
B
6
Canister P
ump M
oduleC
10
Leak Detection Pump
Vent V
alve
VCCVOUTGND+BGND
+B SGND
(Cont. next page)
4 IB1
E 3(A), E 4(B), E 5(C), E 6(D)Engine Control Module
A
B
C
D
E
A
B
C
D
E
F
SC
ION
xB (E
M0091U
)201 M
13 161514
2 xB (Cont' d)
30D29 D 28 D
28 C
1
32 D 32 C
BR BR
BR
Y–B V P BR
B
R–L
BR
BR
BR
1
3 2
4 2 3 5
1
VC VOUT
GND
22 A
W–B
THA E2G VG E2
+B
THA E2G VG EC
PSP THW E2
BR
R–W Y
BR
P 1
M 1
Mass A
ir FlowM
eter
Pow
er Steering O
ilP
ressure Sensor
10 IF1
W–B
W–B
EDIG
IF120
Right KickPanel
EngineBlock
B B
BR
B
W–B
BR
B
R–W
2
Engine C
oolant Temp. S
ensorE 2
E n g in e C o n tro l
Engine Control ModuleE 3(A), E 4(B), E 5(C), E 6(D)
A
B
C
D
E
F
SC
ION
xB (E
M0091U
)202
M O
VE
RA
LL
EL
EC
TR
ICA
L W
IRIN
G D
IAG
RA
M
1 2 3 4
3 xB (Cont. next page)
BB
1E9
17
1E4
C
THW
4 B
1
2
60A M
AIN
4 3
W–R
W–L
W–L
W–R
B–L
B–G
7 1A
1 1O
1
15A A
M2
120A A
LT
1
AM25 6
2AM1
ST2
IG2
IG1
ACC
1
1O8
1C1
P o w e r S o u rc e E le c tro n ic a lly C o n tro lle d T ra n s m is s io n a n d A /T In d ic a to r
18
2
12
1
3
5
1
15A E
FI
1 1
1 1
1O6
EB Front LeftFender Apron
1H8
1A11
1 A 9 D D8 19 D 12 D D13 11 D 24 D
3 A
C28
14 IA1
35 D D27
2
1
7 C 6 C 4 D
ECEngineBlock
4
6
40A A
M1
4
2
IE
1P13
1O2
IF156 IF119 IF1
3 1E
11 B 10 B 9 B21 B
1O4
5 1E
10AGAUGE
G–R
16 1G
W–G
W–R
B–R
W–L
W G Y–G
BR
BR
BR
BR
BR
W–B
W–B
W–B
B–Y
W–B
B–Y
B–R
R B
R–Y
G–W
G–R
R–W
B
G
G–W
R–W
GR
BR
R–W
R–BB–Y
B
B–Y
B–Y
B–Y
5 10 2 3 8 4 1
6
12 A 18 C 20 C 32 C
VC
B–Y
9 IF1
R–B
R–B
17 1G
EFI R
elay
1H
G–B
2
22
W–B
1
8B30
S1 S2 ST SLT+ SLT– SL OTW B Y
G
LG
OO
GR
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A
BR
A3
R–Y
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BATT
13 1H
NT+ NT– R D 2 L
E01 E02 E03 E1 EC ODMS
Battery
1E2
16 1H
7 IF1
R–Y
1G8
1H
B–R
1G
F 8
E 1
1G1
EDEngineBlock
6
I10
Engine Control System<2–6><2–8><2–12><2–13>
VTA1STASPDTCSTPNSW
8 IF116 IF1
G–W
GRR
G–W
E 3(A), E 4(B), E 5(C)E 6(D)
R–W
GR
J 6 (A ), J 7 (B )
R–Y
G–R
R
A 33
845 721
LL2LDLNLRLPL
A/T Indicator Light S
W
O/D
Main S
W
Electronically Controlled TransmissionSolenoid
Engine Control Module
Fusible Link Block
Ignition SW
Junction ConnectorTurbine S
peed Sensor
A 7
G–R
R–Y
GR
R–W
R
B14
ODLP
G–O
B–R
E B
E A E A
R
RR
Skid Control ECUwith Actuator<13–5>
G–O
Left KickPanel
8 A
GR
MREL
33 B
CANH
34 B
CANL
Multiplex C
omm
unicationS
ystem (C
AN
)<13–11>
7 IA2
GR
GR
RB
2 A
+B2
B–R
IGRightKickPanel
B–R
A
B
C
D
E
F
G
H
SC
ION
xB (E
M0091U
)203 M
7 865
3 xB (Cont' d)
E le c tro n ic a lly C o n tro lle d T ra n s m is s io n a n d A /T In d ic a to r
406 7 8 9 10 11
12
O/D
OFF
L2DNRP
IF Instrument PanelBrace LH
21
BR
R–W
GR
R–Y
G–R
G–W
B–R
C 6Combination Meter
G–W
G–R
R–Y
GR
R–W
R
G–O
B–RA
B
C
D
E
F
G
H
SC
ION
xB (E
M0091U
)204
M O
VE
RA
LL
EL
EC
TR
ICA
L W
IRIN
G D
IAG
RA
M
1 2 3 4
4 xB
3
60A M
AIN
2
1
5
3
Right KickPanel
IG
OFF
Tail
Head
+B T RF H EL
Flash
Low
High
ED HL HU EL
6 1M
2 1O
1
10AH–LP LH/H–LP LO LH
1
10AH–LP RH/H–LP LO RH
1
15ADOME
1
1 2
3
1 2
3
1A9
7 1M
1A8 1B10 1B11
5 1M 1F2 1G12
1A4
B B
B A B A
Front FogLight SW<12–2>
8 9
B–L
W–B
W–B
L–YL–Y
B–YB
–W
B–Y
B–Y
B–L
B–W
B–W
B–W
B–Y
B–W
B–R B
B
R
B
1 1 1
2 2 2
11
P o w e r S o u rc e H e a d lig h t
Battery
5 IA2
Door Lock C
ontrolR
elay<11–8>
Light Control SW Dimmer SW
IE
BB
14
B–W
1
Beam
Left KickPanel
F 8
H 6
J 6(A), J 7(B)
H 1 H 2
C 8
C 6W
–B
CombinationMeter
Combination SW
Fusible LinkBlock
Headlight LH Headlight RH
Headlight Relay
Junction Connector
SC
ION
xB (E
M0091U
)205 M
1 2 3 4
5 xB
5
W–R
10
120AALT
60AMAIN
43
1C1
B–G
40A A
M1
10A H
AZ
1O8
Battery
1
15A H
OR
N
1
2 1M
B–L
4 1O
1
ACC
IG1AM1 2
G–B
10AGAUGE
1M3 1M1
1 1
5 6
7
LH
RH
6
G–Y
G–B
8
1J4 1B7 1B6
G–B
EB Front RightFender Apron
W–B
2
3
2
3
EA
G–Y
W–B
3 2
1
5
1
5
1S8 1T5
G–B
G–Y
BJ
W–B
W–B
13
1F14 1F9
G–B
G–Y
1O2
Left KickPanel
W–B
W–B
W–B
FLSH Relay
4 1
+B IG EL ER
EHW LL LR
W–L
G–W
B–Y
G–W
2
1
3
5
11
HORNRelay
11
G–W
W–R
4 IA1
G–R
P o w e r S o u rc e T u rn S ig n a l a n d H a z a rd W a rn in g L ig h t H o rn
Door Lock C
ontrolR
elay<11–7>
G–O
22
W–B
7
GND
TL TB TR
Hazard
SW
2
1
Left KickPanel
IE
G–O
1G
IE
W–B
Door Lock
Control R
elay<11–7>
9
1
1 1H
G–W
G–W
G–W
G–O
W–R
W–R
18
1P
W–B
W–B
W–B
A
A
C
C
1
2
J 1
1
2
J 1
S 2
CAG–B
F 5
G–Y
W–B
W–B
H 4
C 8
1
G–R
R 7
Front LeftFender Apron
R 8
W–B
C 7 (A ), (B )
Rear QuarterPanel Inner RH
BK
H 5
I10
G–Y
C 6
I12
CombinationMeter
Com
bination SW
Combination SW
Front Turn Signal Light
LH Front Turn Signal Light R
H
Horn (H
igh )
Horn (Low
)
Integration Control and P
anel
Ignition SW
JunctionC
onnector
JunctionC
onnector
Rear C
ombination Light LH
Rear C
ombination Light R
H
Side Turn S
ignal Light LH
Side Turn S
ignal Light RH
S 1
F 6
Turn
Turn Horn
Turn
On
Off
RearQuarterPanelInner LH
IF InstrumentPanel BraceLH
21
BR
RHLH
Fusible LinkB
lock
F 8
∗ 2 : From Dec. 2005 Production∗ 1 : Before Dec. 2005 Production
6 B (∗2)
1 A (∗1)
JunctionConnector
J 4(A), (B)
B B (∗2)
C A (∗1)
C A
B B
C A (∗1)
B B (∗2)
SC
ION
xB (E
M0091U
)206
M O
VE
RA
LL
EL
EC
TR
ICA
L W
IRIN
G D
IAG
RA
M
1 2 3 4
6 xB (Cont. next page)
2
1
2
2 3
B
1
G
R 9
1
W–B
G
BE1
Battery
4
120A A
LTB
–G
1M4
10A TA
IL
1C1
1B12 1B13 1S9
EB Front LeftFender Apron
BKRear QuarterPanel Inner LH
2
1
GW
–B
G–O
W–B
G
GGW
–B
W–B
GW
–B
B
Back DoorCenter
5
R 7
Rear QuarterPanel Inner RH
R 8
P o w e r S o u rc e T a illig h t a n d Illu m in a tio n
2
W–B
2
B B
1
4
1
4
W–B
F 8
F 5
EA Front RightFender Apron
OFF
Tail
Head
+B T
13
10
BJ
J 9
W–B
BC2
4BC2
BE1
G
BE1
W–B
2
G
W–B
1
GG
B
BE1
G–W
R10
W–B
BL
F 6 L 1
W–BW–B
6
C 8
W–B
Light Control
SW
Com
bination SW
Front Parking Light LH
Tail
Front Parking Light R
H
Fusible Link Block
Junction Connector
License Plate Light
Rear C
ombination
Light LH
Rear C
ombination
Light RH
Rear S
ide Marker
Light LH
Rear S
ide Marker
Light RH
Tail
40A A
M1
2
1
1O8
G
1M9
1
ACC
IG1AM1 2
Ignition SWI10
W–L
B–Y
60A M
AIN
1
1
15A D
OM
E
1
2
3
B–L
1G12
1A4
L–YL–Y
1K9
G
1R3
Engine C
ontrolM
odule <2–9>
G
L–Y
B–Y
1
10
Audio S
ystem<
15–6>
Com
bination SW
C 7
A
B
C
SC
ION
xB (E
M0091U
)207 M
7 865
6 xB (Cont' d)
5
J 6 (A ), J 7 (B )
R 2 (A ), R
3 (B ) B
W–G
A10
6
W–G
5
W–G
F
W–B
1N
3
1
1O2
14 1P
IE Left KickPanel
1F10 1P1 1N51J2
1R
G
2
G
G
G
W–B
W–G
W–G
D
26
W–G
1J6
D
A
B
A 7
B
A/T S
hift Lever Illumination
JunctionC
onnector
Radio and P
layer
Illumination
Integration Control and P
anelI13
5
4
7
B–Y
1O4
10A G
AU
GE
1L3
R–B
R–B
4
1G13
CPU
Illumination
W–G
27
3
1 23
R–B
Combination MeterC 6
1R9
R 6
G
Rheostat
GBR
21
IF Instrument PanelBrace LH
BR
R–B
1
R–B
P15P
assenger Seat B
eltW
arning Lamp
1K8
GW
–B
4
5
1K5
W–B
C B (∗2)
B A (∗1)
B A (∗1)
C B (∗2)
Junction ConnectorJ 4(A), (B)
T a illig h t a n d Illu m in a tio n∗ 2 : From Dec. 2005 Production∗ 1 : Before Dec. 2005 Production
B–Y
L–Y
A
B
C
SC
ION
xB (E
M0091U
)208
M O
VE
RA
LL
EL
EC
TR
ICA
L W
IRIN
G D
IAG
RA
M
1 2 3 4
7 xB
W–B
R–W
C 6
D 7
4 1A
12 1G
1
2
60A M
AIN
5
W–L
W–L
B–L
B–G
1
15A D
OM
E
120A A
LT
1
1S
AM1 IG1
ACC
1
1O8
1C1
40A A
M1
Battery
P o w e r S o u rc e In te r io r L ig h t
L–R3
1
2
4 3
1O3
15AACC
R–Y
1N6
1S1
1G4
1
3 1S
1G5
1 1 1
1
2
DO
OR
OFF
ON
2
1
B–W
R–W
R–W
R–W
R–W
R–WR
R
L–Y L–Y R–Y
R–W
L–Y L–Y
1L4
R–W
Door Lock ControlRelay<11–8>
81L
F 8
C ig a re tte L ig h te r
Door Lock ControlRelay<11–7>
R
D 6
IE Left KickPanel
BL
W–B
Back DoorCenter
L–R
D 8
D 5
I10
1
4
24
1
2
R–W
I14
BC1
IB2
Door Lock ControlRelay<11–7>
3
R–W
Door R
–W
C 4
R–W
CigaretteLighter
Com
bination Meter
Door Courtesy SWFront LH
Door C
ourtesy SW
Front RH
Door C
ourtesy SW
Rear LH
Door C
ourtesy SW
Rear R
H
Fusible Link Block
Ignition SW
Interior Light
Back D
oor Courtesy S
WB 5
15
SC
ION
xB (E
M0091U
)209 M
1 2 3 4
8 xB
A
20A W
IPE
R
5 7 6
W–L
W–L
B–G
120A A
LT
2AM1 IG1
ACC
1
1O8
1C1
40A A
M1
B–Y
Battery
P o w e r S o u rc e F ro n t W ip e r a n d W a s h e r
4
10 11 IA1
EA
A
B
GR–B
GR
B–R
5
W–B
3 214
W–B
GR–B
GR
B–R
W–B
M
++1+2
E
11 1N
2 1O
4
IA12 6 IA1
9
1OB
–W
IA1
1
2
10A G
AU
GE
1E5
9 IF1
2 B
3 A
2 A
1 B
1E9
7 1S
BJRear Quarter PanelInner LH
R–W
R–W
R–B
R–B
R–B
W–B
W–B
R–B
R–B
B
(A/T)
(M/T)
(A/T)
(M/T)
B a c k – U p L ig h t
19
Left KickPanel
A
BK
2
1
M
1
2
IF1
IE
1N7 1A2
S
1A5
BGG
BB
84
Rear Quarter PanelInner RH
Off
On
W EW
+S+1+2+B
INT
OFF
MIST
LO
HI
INT1 INT2 B1
Front Wiper SW
Washer SW
W +B EW +2 +1 +S
+S INT1 INT2 B1
+S
W
E
+B
Wiper Relay
W–B
R 7
A 3 (A )
B 1 (B )
F 8
R 8
F 7
C 9I10
W 1
J 9
W–B
Back–U
p Light SW
Back–U
p Light SW
Combination SW
Front Wiper Motor
Fusible Link Block
Ignition SW
JunctionConnector
Rear C
ombination
Light LH
Rear C
ombination
Light RH
Washer M
otor
Back–U
p
2
1
Back–U
p
Front RightFender Apron
SC
ION
xB (E
M0091U
)210
M O
VE
RA
LL
EL
EC
TR
ICA
L W
IRIN
G D
IAG
RA
M
1 2 3 4
9 xB
1
1K
Front Passenger
Seat B
eltW
arning Light
Left KickPanel
Door Lock C
ontrolR
elay<11–7>
25
2
W–L
W–L
B–G
120A A
LT
2AM1 IG1
ACC
1
1O8
1C1
Battery
P o w e r S o u rc e S e a t B e lt W a rn in g(B e fo re D e c . 2 0 0 5 P ro d u c tio n ) S h ift L o c k
B–Y
4
40A A
M1
1O4
10AGAUGE
1G13
1F1
1P19
1
2
13 IB1 12 IB1
3
IG Right KickPanel
1R8
1P16
IE
Shift LockSolenoid
1
5 3
L–R B
W–B
G–W
R–B
SLS–SLS+E
IG STP
W–R
OO
W–R
G–W
YY
W–B
W–B W
–B
W–B
R–B
R–B
BackDoorCenter
1
2
10A S
TOP
1B8
1
2
1B2
1T31P18
G–Y
G–Y
G–R
G–W
G–W
G–W
G–W
W–B
W–B
1 1
3 3
W–B
S to p L ig h t
15A D
OM
E
1
1
1A4
B–L
3
1
2
60A M
AIN
L–Y
L–Y
9
1L13
Y
1
1B1
G–W
Skid C
ontrolE
CU
with
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13–6>
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inationS
ystem<
6–5>
L ig h t R e m in d e r
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ystem<
7–1>
Door Lock C
ontrolR
elay<11–8>
Rear QuarterPanel InnerLH
BK
C
CC
W–B
1
BJ
1 23
12 1G
35
1H2
G–W
Engine
Control
Module<
2–8>
W–R
Buckle S
W R
H
BL
2
C
4 BC2
W–B
W–B
D D A
BF
A
332426 32
3 BC2
G–W
G–W
W–B
J 6 (A ), J 7 (B )
I13
B 7
U 1
Rear QuarterPanel InnerRH
J 9
I10
S 6
F 8
C 6
N 4
H 8
R 8
W–R
S 8
Integration Control and P
anel
Buckle S
W LH
Stop
Combination Meter
Fusible Link Block
High M
ountedS
top Light
Ignition SW
Junction Connector
Junction Connector
Noise Filter
(Stop Light and
Rear W
indow D
efogger No. 2 )
Rear C
ombination Light LH
Rear C
ombination Light R
H
Shift LockControl SW
Stop Light SW
Unlock W
arning SW
R 7
Stop
1O2
Belt
Buzzer
CPU
1
SR
S S
ystem<
14–4>IF
BR
21
BR
Instrument PanelBrace LH
Occupant D
etectionS
ensor<14–2>
K e y R e m in d e r
SC
ION
xB (E
M0091U
)211 M
1 2 3 4
10 xB
P 64 13
P 8
1
W–B
P 9
P 7
RRDRRURLDRLUPD
L–W
I10
F 8
P o w e r S o u rc e P o w e r W in d o w
4
120A A
LT
2
1
3
5
1
ACC
IG1AM1 2
1S1L 222 1O
1C1 1O8
L
W–B
1 IC1
93
R G
13
161018 1215
4 IC1 2 IC1 2 ID1 1 ID1 4 ID1 3 ID1
D11
2 IG14 IG1
5 2 5 2 5 2
3 1
IG11
Left Kick PanelIE
1O4
PWR Relay
Battery
6
4 4 4
LL
E
LL
L–W
B–G
B–G W
–L B–Y
L
G–B
R–B
G–Y
R–Y
G–W
R–L
G–W
R–L
G–W
R–L
G–B
R–B
G–Y
R–Y
G–B
R–BL
G–B
R–BL
G–W
R–L
L–W
W–B
W–B
GR
B
7 IC1
W–B
L
B
30A P
OW
ER
40A A
M1
10A G
AU
GE
PUE DU
SU SD SU SD SU SDB B B
LU
W–B
U U DDD
Up
Up
Dow
n
Dow
n
Up
Dow
n
22
1 1
P10 P12P11
3 BB14 BB1BB155 BA1 BA14 BA13
7
DD
Power Window Master SW
Fusible Link Block
Ignition SW
Pow
er Window
Control S
WFront R
H
Pow
er Window
Control S
WR
ear LH
Pow
er Window
Control S
WR
ear RHPower Window Motor
Front LH
Power Window MotorFront RH
Power Window MotorRear LH
Power Window MotorRear RH
1L1
M
4 5
M
2 1
R G
13
M
2 1
M
4 5
C
B
B
C
J10JunctionC
onnector
J10JunctionConnector
B
C
SC
ION
xB (E
M0091U
)212
M O
VE
RA
LL
EL
EC
TR
ICA
L W
IRIN
G D
IAG
RA
M
1 2 3 4
11 xB (Cont. next page)
Battery
4
B–G
1C1
40AAM1
25AD/L
120A ALT
1O8 1L10
1
ACC
IG1AM1 2
W–L
B–Y
D o o r L o c k C o n tro lP o w e r S o u rc e
R–B
1
2
4 1O
1L3
J 2 (A ), J 3 (B )
E A B A E A B A
B B
8
E B
IC2 9 IC2 8 IG2 9 IG2
1
Unlock
Lock
8 5
3
Unlock
Lock
5 6
G–B
BR
–Y
G–B
BR
–Y
G–B
BR
–Y
G–B
BR
–Y
IE Left Kick Panel
W–B
Y–G
4
7 IC1
G–B
W–B
6
BR
–Y
Unlock
Lock
5
L–W
R–B
1
Unlock
Detection
5 IC2
11
2
21
11 IC2
6
L–R
10 IC2
1219
5 IC1
W–B
L–O
6 IC1
L–W
Y–G
26
L–WL–W
1 18Y
–B
W–B
L–W
W–B
3
W–B
W–B
W–B
L–O
Y–G
L–R
Y–B
W–B
W–B
M
8 IG1
15ADOME
1
60AMAIN
1
3
B–L
L–Y
L–Y
W–B
1
2
10AGAUGE
P
IA23
IRSG
I10
BR
–Y
18
L1TVSS
14
P
W–B
F 8
D 4
D11
D12
W–B
3W
–B
W–B
D 9
IG B L1 UL1 E LSWD UL3 ACTD
G–B BR–Y
Door Lock Control Relay
Door Key Lock and Unlock SW Front LHDoor Lock Motor Front LHDoor Unlock Detection SW Front LH
Door Lock C
ontrolS
W Front LH
Door Lock C
ontrolS
W Front R
H
Fusible Link Block
Ignition SW
JunctionC
onnector
C
W–B
CC
C
W–B
J10JunctionConnector
1Option C
onnector (TVIP
)O
2
C B (∗2)
B A (∗1)
B A (∗1)
C B (∗2)
JunctionConnector
J 4(A), (B)
∗ 2 : From Dec. 2005 Production∗ 1 : Before Dec. 2005 Production
A
B
C
D
SC
ION
xB (E
M0091U
)213 M
7 865
11 xB (Cont' d)
BC21
D o o r L o c k C o n tro l
IB25
R–Y
4 16
W–R
BKLLP
Left KickPanel
IEBack DoorCenter
BL
SPD BDSU BACT HAZ DCTY HORN PCTY HRLY KSW RDA
FLSH
Relay
<5–1>
15
G–O
L–Y
10
Buckle S
W LH
<9–2>
<19–4>
Interior Light<
7–2>
17
BR
–Y
V–W
9
Com
bination Meter
<16–3>
L–Y
L–Y
L
W–B
V L–Y
7 1L
4 1A
GND
+BPRGRDA
53
1
24
V
2
25
L
Unlock W
arning SW
<9–3>
8
Y
Headlight R
elay<
4–1>
13
R
R–W
7
Back D
oor Courtesy S
W<
7–2>
HO
RN
Relay
<5–4>
23
W–R
C
AC C
L–B
L–O
M
Door C
ourtesy SW
Front LH<
7–2>
L–W
L–O
5
R
L–O
L–B
L–O
L–B
23
B
L–O
B
L–B
L–W
L–R
L–B
L–O
L–B
L–O
L–O
L–B
21
22 20
1 BA1
PRG
L–O
L–B
IB24IB21
L–B
L–O
L–O
4 W–B
L–R
L–W
L–B
IG16IG15IG210IG211
652
Lock
Unlock
1
1 2
L–B
L–O
L–W
L–O
W–B
J 8
A
2 BA1
J 8
1
B
2
C A
BB1BB1
M
W ire le s s D o o r L o c k C o n tro l
M
3 BC1
13 IB2
M
1
2
2 1O
15 1P
L–Y
BR
–Y
L–Y
BR
–Y
W–B
W–B
W–B
W–B
B 6
D14D13
D10
ACT+ACT–L2UL2
D 4
L–W
Door C
ourtesy SW
Front RH
, Rear LH
, RH
<7–2>
Back D
oor Opener S
W
Door Lock Control Relay
Door Key Lock and Unlock SW Front RHDoor Lock Motor Front RH
Door Lock MotorRear LH
Door Lock MotorRear RH
JunctionC
onnector
JunctionC
onnector
Back D
oor Lock Motor
B 5
3
4
Door C
ontrolR
eceiver
D 3
A
B
C
D
SC
ION
xB (E
M0091U
)214
M O
VE
RA
LL
EL
EC
TR
ICA
L W
IRIN
G D
IAG
RA
M
1 2 3 4
12 xB
40A A
M1
W–L AM1 IG1
ACC
1
P o w e r S o u rc e F o g L ig h t R e m o te C o n tro l M irro r
L–R3
Right/
Dow
n
Select
SW
Operation
SW
LH RH RHLH
Left/U
pDow
n
Up
Right
Left
2 IC2 3 IC2 1 IC2
M M
3 IG2 2 IG2 1 IG2
M M
G–O
1 5 3 1 5 3
BR
–Y
BR
–W
BR
–Y
G–R
LG–R
LG–B
G–W
LG–R
LG–B
G–W
LG–B
BR
–W
B
HL VL M+HR VR E
1L5
1L121L11
IELeft KickPanel
G–R
G–R
LG–R
1O3
15AACC
1L6
W–B
G–Y
W–B
L–R
763425
8
1O4
120A A
LT
4
2
W–L
1O8
1C1
B–G
Battery
1
10AGAUGE
3
B–Y
1
2
3
5
12 IA1
Front RightFender Apron
EBFront LeftFender Apron
1
2
1
2
EA
W–BG
–R
G–O
R–W
G–R
R–W
R–W
W–B
W–B
GR
OFF
ON
BFG LFG
2
B–W
Com
binationS
W<
4–2>
R16
R17
R 5
F10
F 4 F 3
F 8
F11
Front FogLight LH
Front FogLight RH
Fusible Link Block
Front Fog LightRelay
Front Fog Light SW
Remote Control Mirror SW
Rem
ote Control
Mirror LH
Rem
ote Control
Mirror R
H
I10Ignition SW
1J10
2
15AFOG
(∗1 )
(∗2)(∗2)
∗ 1 : Before Dec. 2005 Production∗ 2 : From Dec. 2005 Production
(∗1)
SCION xB (EM0091U)215
Memo
SC
ION
xB (E
M0091U
)216
M O
VE
RA
LL
EL
EC
TR
ICA
L W
IRIN
G D
IAG
RA
M
1 2 3 4
13 xB (Cont. next page)
B–L
R–B
B–L
4
W–R(∗1)
2AM1
ST2
IG2
IG1
ACC
1
60A A
BS
AM2
7. 5A E
CU
–IG
R
120A A
LT
1B3
I10
B–R
B–Y
Battery
2
1
3
5 1
2
3
5
2 2 2 2
2 2 2 2
AB
S C
UT
Relay
AB
S M
TRR
elay
R
L
B–W B
B–L
B
B–W R
B–L
R L B B
46 45 15 14 31
2 195620173418
FL–FL+BM FR+ FR– RL+ RL– RR+ RR–
+BSMRFMRR+IG1
2
1 A 4
2
1 A 5
2
1 A15
2
1 A16
F 8
7 IE1 3 IE1 5 IE1 2 IE1
Y B
LG–B
LG–R
Y B
B–R R G
BR
–Y
BR
LG–B
LG–R
V
10
NEO
V
IA26
S 3
P o w e r S o u rc e A B S , T R A C a n d V S C
1R
W–L
W–L
B
B–G
1
1O8
1C1
2
1
40A A
M1
6
B–Y
7. 5A E
CU
–B
1
2
1
40A A
BS
NO
. 1
1O4W–R
(∗1 )
10A G
AU
GE
1G13
R–B
B–L
B–L
AB
S S
peed Sensor
Front LH
AB
S S
peed Sensor
Front RH
AB
S S
peed Sensor
Rear LH
AB
S S
peed Sensor
Rear R
H
Fusible Link Block
Ignition SW
Skid Control ECU with Actuator
3
1
1
2
1
15A D
OM
E
B–L
1
2
1
15A A
M2
60A M
AIN
1O1
1A7
5
W–R
1G12
1A4
L–YL–Y
6
B
L–Y
B
1H11
B
Engine C
ontrol Module
<2–9>
B
5
∗ 2 : From Dec. 2005 Production∗ 1 : Before Dec. 2005 Production
W–R
W–R
(∗2 )
W–R(∗2)
A
B
C
D
E
F
G
SC
ION
xB (E
M0091U
)217 M
7 865
(Cont. next page)13 xB (Cont' d)
IA15
2
5
W–L
W–B
43
IA2
CSW
1
T 3
B–W
R
4213
W
D/G WFSE
Data Link Connector 3<2–5><2–6>
R
A/T Indicator
Light SW
<3–3>
27
STP
G–W
Stop Light S
W<
9–3>
W–L
IA216
W–B
32
GND1
W–B
1
GND2
EB Front LeftFender Apron
W–B
P
1
2
Buzzer
R–W
R–W
IA222
B–W
44
BRL
P
29
WA
R–Y
35
WT
BR
–W
36
VSCW
28
B
PKB
R–Y
BR
–W
B–R
B
11
CANH
W
25
CANL
R–W
30
BZ
B
B–L
B–R
IND
V 2
34
B–R
R–B
W–R(∗1)
B–L
R–B
BR–W
R–Y
P
W–B
IA212
A B S , T R A C a n d V S C
S 3
11IA2
9 IA1
B 1 P 3IG
13 IA1 21
W–B
IA210
W–R
SP1
12
W–R
W–R
IA2
W
B–L
R
40
P
R
IA220
1P10
1B9
W–B
W
B
W–R(∗2)
B–L
Parking B
rake SW
Skid Control ECU with Actuator
TRA
C O
FF SW
VS
C B
uzzer
Right KickPanel
L–Y
B
L–Y
B
B–L
R–L
24
R–L
TS
9 IA2
W–R(∗1)
W–R(∗2)
∗ 2 : From Dec. 2005 Production∗ 1 : Before Dec. 2005 Production
A
B
C
D
E
F
G
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
SC
ION
xB (E
M0091U
)218
M O
VE
RA
LL
EL
EC
TR
ICA
L W
IRIN
G D
IAG
RA
M
9 10 11 12
13 xB (Cont' d)
2138
8
37
BR–W
R–Y
P
19
R–B
B–R
BR
–W
R–Y
P
B–R
BR
BR
C 6
A B S , T R A C a n d V S C
B–R
1O
4
1G
5
Instrument PanelBrace LH
6
B–W
40
3
1
1G
1A
B–W
IF
28
W–R
W–R
Combination Meter 23 1
L–Y
R–B
L–Y
B
AB
S
BrakeTR
AC
OFF
VS
C
Slip
Speedom
eter
CPUB
Yaw
Rate S
ensor
B
B W B
W BBW
B–L
W–R
W–B
B W B–L
W–B
J 5
S 7
Y 1
B A
B A
1 3
2
3 2 5
1
9 10
GND
CANL CANH
IG BAT
ESS
CANH CANL IG
BK
4 IE1
A
IB1147 IB1
B W B–L
A
JunctionC
onnector
Steering S
ensor
B
W
B–L
B–L
W–R(∗2)
W–B
M u ltip le x C o m m u n ic a tio n S y s te m (C A N )
BH BI
6 BA1 6 BB1
W–B
W–B
W–B
W–B W–B
CANL CANH
14 6
Data Link Connector 3D1
Engine ControlModule
CANH
E4
33
CANL
8 9
CANH CANL
A17A/C Amplifier
RearDoor RH
Rear QuarterPanel Inner RH
RearDoor LH
WB
WAB
B A
B
34
W
F B
F B
JunctionConnector
J 4(B)
(∗2 )
W–R
(∗1 )
W–R(∗1)
W–R(∗2)
∗ 2 : From Dec. 2005 Production∗ 1 : Before Dec. 2005 Production
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
SC
ION
xB (E
M0091U
)219 M
1 2 3 4
14 xB
9 1D
D2–
Y–O
B
P–
P2–
3
P2+
1
1
2
60A M
AIN
W–R
B–L
7 1A
1 1O
1
40A A
M1
1 17
P o w e r S o u rc e S R S (B e fo re D e c . 2 0 0 5 P ro d u c tio n )
1
1O6
34
1D5
5 B 3 B
IE
1G7
1D8
B–O
B–Y
Data LinkConnector 3<2–5><2–6>
19 B 12 BP
–B
W
TC SILLAIG2
B22
B
4 IA3 3 IA3
+SL
B15 26 B
2 1
W–R
BR
W–R
BR
–SL
28 B 27 B
1O2
1D31D2
W–B
W–B
W–B
21
14 B 13 B
Y–B Y
3 4 1 2
8
1 2
B 7 B 2 A
Y–P
1 A
Y–G
R
5 C 6 C
Y–B Y Y–B Y
E2 E1 D+ D– P2+ P2– PL+ PL– PR+ PR–
2
2 IA3 1 IA3
9 B 20 B
+SR –SR
B–W
BR
–W
B–W
BR
–W
B
Y–R
P+
P+ P–
3
Left KickPanel
11
I10
F 1
B 7
F 8
A 9(A), A10(B), A11(C)
A13 A12 P13 P14F 2
3 A
L–Y
LSP+
Buckle S
W LH
Y–G
4
8 A
LG–B
LSP–
5
11 A
G–W
LBE+
2
7 A
R–B
LBE–
1
1H10
Engine C
ontrolM
odule<2–9>
BB
1A
2
2
10 B
GSW2
D2+
1
L–Y
4
1G12
1
L–Y
15A D
OM
E
D–D+D2–
16
B–Y
W–R
4
B
Y–V
D2+
C 6
5
ACC
IG1
Battery
IG2
ST2
AM1 2
6AM2
R–B
10A G
AU
GE
1O4
13 1G
120A A
LT
1O8
1C1
2
1
15A A
M2
1W–L
4
B–G
Airbag Squib(Front Passenger' s Airbag Assembly)
Airbag Squib(Steering Wheel Pad)
Seat P
osition Sensor
Airbag Sensor Assembly
Com
bination Meter
Front AirbagSensor LH
Front AirbagSensor RH
Fusible Link Block
Ignition SW
Pretensioner LH Pretensioner RH
SR
S
B–Y
L–Y
1
CPU
8 C 12 C
B
W–B
RBE+ RBE–
O
1
3
Com
binationM
eter<9–2>
Buckle S
W R
HB 8
W–B
Occupant D
etectionS
ensor
Seat PositionSensor
Seat B
elt Warning
System
<9–2>
3
23
R–B
IF InstrumentPanelBrace LH
21
BR
BR 2
1G8
40
B–R
SC
ION
xB (E
M0091U
)220
M O
VE
RA
LL
EL
EC
TR
ICA
L W
IRIN
G D
IAG
RA
M
1 2 3 4
15 xB
IB212
I10
R12R11
R 2(A), R 3(B), R18(C)
T 4 T 5
F13
1
2
ANT
A
14
IB2
8
F12
IC2
J 2(A), J 3(B)
B Y
60A M
AIN
W–L
W–L
B–L
B–G
120A A
LT
1
AM1 IG1
ACC
1
1O8
1C1
40A A
M1
Battery
P o w e r S o u rc e A u d io S y s te m
15A D
OM
E
1
1N3
1A4
1O3
15AACC
1N9
B–RL–Y
IF
RL–RL+
1 21 2
RR–RR+
W–B
W–B
B6B2 B31 B
9
L–Y
L–Y
A
L–R L–R
L–Y
Y
A7
2
3
B WR
A14
1 A 5 A2 A 6 A
3 A 4 A
ACC +B
GND FR+ FR–FL+ FL–
34
2
1
IB211
11 22
J 2(A), J 3(B)
R W
GR
A
BDB
LG LP V
P V
LG L
IB210
D
FC
1 2 1 2
P
Instrument PanelBrace LH
V LG L
LLGVP
IC27 14 IG2 7 IG2
1
B
A A
C B C B
D
F B F B
A
BA B
A
B
R15
C 9
BC16
ML
B
B
B
1
W–L
2
1O
1A2
2 IB2
21 IA1
4
W–L
W–L
LL
3
B–Y
20A W
IPE
R
5 BC1
3
2
M
W 1
R e a r W ip e r a n d W a s h e r
1N11
1O2
IE
W–B
W–B
5
F 8
Antenna AmplifierCombination SW
Fusible Link Block
Front Door Speaker RHFront Door Speaker LH
Ignition SW
JunctionConnector
JunctionConnector
Radio and Player
Rear Speaker LH Rear Speaker RH
Rear Wiper Motor
Tweeter LH Tweeter RH
Washer M
otor
Left KickPanel
Washer1
ON
Washer2
+1R WR EW
OFF
Rear W
iper andW
asher SW
1T1
(Cont. next page)
O 4(D)Option Connector(Radio and Player)
SC
ION
xB (E
M0091U
)221 M
7 865
15 xB (Cont' d)
FWGD
D1
15 C
ARI
FWGD
1
Option Connector (IPOD Unit)O 3
W–B
ACID
C3 D
FWPW
4 D C
ACPW
6 D D
DOTX
8
ACID
3
9 D 7 D 10 D 11 D 12 D 13 D 14 D 16 D
DORX DOGD ACDT AUDL AUDR AGND DGND SGND
17 C
ALI ASGN
C16
AUXI
C19
SPD
C3
FWPW
4
ACPW
16
DOTX DORX DOGD ACDT AUDL AUDR AGND GGND SGND
8 9 7 10
G P V B W
(Shielded )
Y R G
(Shielded )
LG O
Radio and PlayerR2(A), R3(B), R18(C)
ALO ARO ASGN AUXO
1 2 3 4
Stereo Jack AdapterS 9
B W
(Shielded )
R
Com
binationM
eter<16–3>
6 11 12 13 14
V–W
A u d io S y s te m
O 4(D)Option Connector (Radio and Player)
11
7 C
SW1SW2
6 C
SWG
LG P
12
8 C
O
10
Combination SWC 7
AU2 EAU AU1
Volume–
Volume+
Seek–
Seek+MODE
SC
ION
xB (E
M0091U
)222
M O
VE
RA
LL
EL
EC
TR
ICA
L W
IRIN
G D
IAG
RA
M
1 2 3 4
16 xB (Cont. next page)
AB
S
B–Y
B
1
2
60A M
AIN
4 3
W–R
R–B
B–R
VBR
IFInstrument PanelBrace LH
V
BR
B–Y
B
W–L
W–L
W–R
B–L
B–G
7 1A
1 1O
1
15AAM2
120A A
LT
1
1F7
1T4
3
2
Key R
eminder S
ystem<
9–3>
AM25 6
2AM1
ST2
IG2
IG1
ACC
1
1G8
1O6
4 1O
10AGAUGE
13 1G
40AAM1
1O8
1C1
SR
S S
ystem<
14–2><
19–2>
Battery
2
1
P o w e r S o u rc e C o m b in a tio n M e te r
7 IB2
BR
BR
1
2
L–YL–Y
4 1A
12 1G
1
15ADOME
L–Y
23 4030
Brake
BE
ngine Control
Module<
2–5>
21 31 25 34323533 2829
C 6
F 8
I10
F14
Combination Meter
Fusible Link Block Fuel Sender
Ignition SW
Fuel
SR
S
Belt
OD
O/Trip S
W
Buzzer
Fuel
Tachometer
Speedom
eter
VS
C S
ystem<
13–10>
VS
C S
ystem<
13–9>
36
EA Front RightFender Apron
38
Headlight
System
<4–4> B
W–B
2
1
L–Y
37
14 IA2
B
Interior LightSystem<7–1><7–2>
1
141524
B 2B
rake Fluid LevelW
arning SW
Door
Beam
VS
C S
ystem<
13–10>
Door Lock ControlRelay<11–6>
Engine Control Module<2–8>
V–W
LCD(ODO/Trip Clock)
CPU
Clock H
Clock M
Taillight and Illumination
System
<6–5>
27
Maint
Reqd
V–W
Radio and P
layer<
15–5>
∗ 2 : From Dec. 2005 Production∗ 1 : Before Dec. 2005 Production
D B (∗2)
D A (∗1)
D A (∗1)
D B (∗2)
D A
D B
JunctionConnector
J 4(A), (B)
1F6 3
1H
41K
V–W
V–W
V–W
Seat B
elt Warning S
ystem<
9–2><
19–3>
SC
ION
xB (E
M0091U
)223 M
7 865
16 xB (Cont' d)
C o m b in a tio n M e te r
Malfunction
Indicator Lamp
Oil P
ressure
Charging S
ystem<
1–4>
16
TRA
C O
FF
LCD
Back Light
11109
Water Tem
p. Hot
Charge
Electronically C
ontrolledTransm
ission andA
/T Indicator System
<3–5>
<3–6>
17 12
13
Taillight and Illumination
System
<6–5>
87
2 IF1
1
GG
Electronically C
ontrolledTransm
ission and A/T Indicator
System
<3–6>
6
54 19Turn S
ignal andH
azard Warning Light
System
<5–3>
18
O 1
26C 6Combination Meter
Oil P
ressure SW
O/D
OFF
Slip
VS
C
Engine C
ontrol System
<2–3>
20
Water Tem
p. Cool
Turn LH
Turn RH
VS
C S
ystem<
13–9>
P R N D 2 L
Illumination
3 2
Engine C
ontrolS
ystem<
2–4>
SC
ION
xB (E
M0091U
)224
M O
VE
RA
LL
EL
EC
TR
ICA
L W
IRIN
G D
IAG
RA
M
1 2 3 4
17 xB
BD1
A 1
Front LeftFender Apron
3 1K
W–B
2
1C1 1
30ARDI
1
2
B–G
40AAM1
W–B
B
1
120A ALT
1O8
1O4
1
1
ACC
IG1AM1 2 B–Y
10AGAUGE
7. 5AECU–IG
1B3 1P11
W–L
B–R
B–R
4
Battery
2
1
3
5
11
1 1
FAN
NO
. 1R
elay
L–W
2
1
5
3
4
1 1
1 1
1
M
1
2
15 IA2
Y–R
8 1J
Y–R
W–L
1
30ADEF
2
EB
L–R
B–L
LL–R
2
1
W–B
L
W–B
W–B
B–R
1 B
1 A
B–L
1
B
BM
2 1O
3
P o w e r S o u rc e R a d ia to r F a n a n d C o n d e n s e r F a n
FAN
NO
. 2R
elay
R e a r W in d o w D e fo g g e r
5
1
2
W–L
N 2
Off
On
TimerCircuit
B–R
3
2 4B
W–B
1
1
IELeft KickPanel
IA17
R–B
IB26
N 4
R13 (A ), R
14 (B )
BW
–B
R 4
R 1
Engine C
ontrolM
odule<2–9>
I12
F 8
BC11
B B
B
A/C
Condenser Fan
Resistor
Fusible Link Block
Integration Control and Panel
Noise Filter
(Rear W
indow D
efogger No. 1 )
Noise Filter
(Stop Light and
Rear W
indow D
efogger No. 2 )
Radiator Fan M
otor
Rear W
indowD
efogger Relay
Rear W
indow D
efogger
I10Ignition SW
Rear WindowDefogger SW
B–R
B
Fuse Block<
2–9>
Back DoorLH
B
BB
SCION xB (EM0091U)225
Memo
SC
ION
xB (E
M0091U
)226
M O
VE
RA
LL
EL
EC
TR
ICA
L W
IRIN
G D
IAG
RA
M
1 2 3 4
18 xB
1H
B–G
1C1
2
1
8 1O
40A A
M1
Right KickPanel
IE IG
D 2
18
40A H
TR
4 1O
1 2
10AGAUGE
W–B
3
5
2
1
4 HTRRelay
1J11J71O2
7. 5AA. C
1J9
L–R
HI M2 M1
10 6 7
LO OFF
2
1
L–B
L
SW–5
J 4 (A ), (B )
Left KickPanel
1
3
Off
On
2
W–B
L–W
P o w e r S o u rc e A ir C o n d itio n in g
1
2
L–Y
L
W–B
M
L–RL–B
L–B
L–B
L–Y
L–W
W–B
W–B
IE
SW–4
B–Y
B–Y
3
4
LB
DEF
A27 26 A
I13
Battery
I10
ACC
IG1AM1
4
120A A
LT W–B
I11
B–Y
W–B
Integration Controland Panel
Integration Control and P
anel
Ignition SW
JunctionC
onnectorD
efroster Mode
Detection S
W
A/C SW
1 IH1
3 IH1 6 IH1 5 IH1 4 IH1
21 3 2 4
1 Blow
er Motor
B 3
Blower ResistorB 4
Blower SW
24 B 7 A 10 A 12 A 9 A 8 A
ALT S5–2 SG–1 PRE CANL CANH
A/C AmplifierA17(A), A18(B)
13 IA28 IA13 IA1
Pressure SensorP2
3 1 2
1
2
L–BB
–W
3 EA1
W–B
EA Front RightFender Apron
Generator
<1–4>
Multiplex C
omm
unicationS
ystem (C
AN
)<13–11>
G–B
R–W
BR
B–R
R–W
BR
B–R
O
1H11
7. 5AECU–IG
B–Y
22 A 23 A
1
B–W
BR
Left KickPanel
B–L
B–Y
TE SG–2
B–Y
W–L
Fusible Link Block
F 8
2
A/C
Thermistor
A 6
(Cont. next page)
SOL+
A13
12 IF1
L–B
A/C
Magnetic
Valve
A 2
2
1
1
1
B
50AH
TR S
UB
1
R
B–L
B–Y
B–Y
R
A A (∗1)
A B (∗2)
A B
A A
A B (∗2)
A A (∗1)
∗ 1 : Before Dec. 2005 Production∗ 2 : From Dec. 2005 Production
A
B
C
SC
ION
xB (E
M0091U
)227 M
7 865
18 xB (Cont' d)
14 A
B–L
IG
A16A17
A
Max C
ool SW
2
F/D S
WW
PTC1
1
IG Right KickPanel
L–B
1
1
B–W
1
3
Foot SW
1
P T C H e a te r
1
B–L
IA2
OUT–4
28
W–B
L–B
W
L–B
W L–O
L–R
L–Y
L–W
L–B
L–W
W–B
W–B
L–B
R
A
J 7
7
JunctionConnector
A20
L–W
8 132
B–L
OUT–7OUT–6
HTR SUB1Relay
SW–6 SW–9
GND–1SW–2
24
9 B
T w o W a y F lo w H e a te r
B
2
1
3
5
18
A
M ControlCircuit
B
A
2
1
ED
REC
FRS
Foot Mode S
W
P 5
A17(A), A18(B)
17
A 8
B14
I15
Air Inlet Servo Motor
Integration Control and Panel
A/C Amplifier
PTC
Heater
EAFrontRight FenderApron
W–B
AW
–B
Max H
ot SW
B–L
W
W
B–L
Inlet Air P
ositionD
etection SW
D 2
R
B–L
B–Y
B–L
B–L
W–B
A
B
C
SC
ION
xB (E
M0091U
)228
M O
VE
RA
LL
EL
EC
TR
ICA
L W
IRIN
G D
IAG
RA
M
1 2 3 4
19 xB
9 1D
D2–
Y–O
B
P–
P2–
3
P2+
1
1
2
60A M
AIN
W–R
B–L
7 1A
1 1O
1
40A A
M1
1
7
P o w e r S o u rc e S R S (F ro m D e c . 2 0 0 5 P ro d u c tio n )
1
1O6
34
1D5
21 B 14 B
IE
1G7
1D8
B–O B
–Y
Data LinkConnector 3<2–5><2–6>
15 B 16 B
P–B
W
TC SILLAIG2
B22
B
25 B
1O2
1D3
W–B
W–B
21
5 B 6 B
Y–B Y
3 4 1 2
1
1 2
B 2 B 2 A
Y–P
1 A
Y–G
R
4 C 5 C
Y–B Y Y–B Y
E1 D+ D– P2+ P2– PD+ PD– PP+ PP–
2
2 IA3 1 IA3
29 B 27 B
+SR –SR
W B
W B
B
Y–R
P+
P+ P–
33
I10
F 8
A19(A), A20(B), A21(C)
A13 A12 P13 P14F17
Y–G
1H10
Engine C
ontrolM
odule<2–9>
BB
1A
2
2
4 B
GSW2
D2+
1
L–Y
4
1G12
1
L–Y
15A D
OM
E
D–D+D2–
8
B–Y
W–R
4
B
Y–V
D2+
C 6
5
ACC
IG1
Battery
IG2
ST2
AM1 2
6AM2
10A G
AU
GE
1O4
13 1G
120A A
LT
1O8
1C1
2
1
15A A
M2
1W–L
4
B–G
Airbag Squib(Front Passenger' s Airbag Assembly)
Airbag Squib(Steering Wheel Pad)
Airbag Sensor Assembly
Com
bination Meter
Front AirbagSensor RH
Fusible Link Block
Ignition SW
Pretensioner LH Pretensioner RH
SR
S
B–Y
1
CPU
23
R–B
IF
21
BR
BR
1G8
40
B–R
(Cont. next page)
35 33 32
Buzzer
Belt
12
4 IA3 3 IA3
30 B 28 B
+SL –SL
W B
W B
F16Front AirbagSensor LH
Left KickPanel
D A D A
F B
W–R
W–R
Door Lock C
ontrol Relay
<11–7>
JunctionC
onnector
J 6 (A ), J 7 (B )
13 B
O
PBEW
17 B
R
P–AB
6
23 B
GR
PAON
3
2
R–B
PAONP–ABIND
G–W
1
C B
C B
JunctionConnector
J 4(B)
B
Passenger Seat BeltWarning Lamp
P15
Instrument PanelBrace LH
7. 5A E
CU
–B
1R6
W–R
R–B
1L3
R–B
L–Y
B–R
W–R
R–BO
G–W
F B
F B JunctionC
onnector
J 4 (B )
W–R
W–R
13 IB1
BB
S e a t B e lt W a rn in g(F ro m D e c . 2 0 0 5 P ro d u c tio n )
Passenger' s Seat Belt/Airbag Indicator (ON/OFF)
B
26 B
1D2
W–B
E2
A
B
C
SC
ION
xB (E
M0091U
)229 M
7 865
19 xB (Cont' d)
B 9
14 A
L–Y
DSP+
Buckle S
W LH
1
13 A
LG–B
DSP–
6
11 A
G–W
DBE+
3
12 A
R–B
DBE–
2
Seat P
osition Sensor
W–B
4
BKRear Quarter PanelInner RH
5
12 IB1
W–R
W–R
BGND
RBE+
1
GR
O
BSWFSR+
Y
FSR–
RBE–
P
2
12 C
FSP+
13 C
FSP–
W–R
+B
6 IB1
W–R
W–R
B
IG
IEW
–B
GND
5 IB1
2 1O
1K11
W–B
W–B
Left KickPanel
Buckle SW RHB10
SGD1
SVC1
SVC1
SGD1
SIG1
SIG1
SGD3
SVC3
SVC3
SGD3
SIG3
SIG3
SGD2
SVC2
SVC2
SGD2
SIG2
SIG2
SGD4
SVC4
SVC4
SGD4
SIG4
SIG4
W
DIA
11 IB1
WD
ata Link Connector 3
<2–5>
Occupant Classification ECUO 5(A), O 6(B)
S e a t B e lt W a rn in g(F ro m D e c . 2 0 0 5 P ro d u c tio n )
A19(A), A20(B), A21(C)Airbag Sensor Assembly
B
7 A 1 A 8 A 4 A 2 A 3 A 9 A 5 A 11 B 7 B 1 B 5 B 9 B 3 B 12 B 8 B
R SB G GR Y W W L O V R BR
2 B 6 B 10 B 4 B
Occupant ClassificationSensor Front LH
O 7Occupant ClassificationSensor Rear LH
O 9Occupant ClassificationSensor Front RH
O 8Occupant ClassificationSensor Rear RH
O10
LSP+ LSP– LBE+ LBE– E
SA2
A
B
C
2
4
1 2 3 4
HOW TO READ THIS SECTION
ACC
IG1
ST1
IG2
ST2
AM2
6 EA4
7 EA3
2 A 2 B
1 A 1 B
4B
5A
B
1B
EA
1
3C15
3C7
41 6
1
1
1
3
2 3
1
2
4 3
1
1
3
6
5
4
7
4 EA3
12 EA1
BO25
21 EA3
ID ECEA
1
2
1
2
1
2
1
2
16 BS1
1
2
M
EA317 1
4
8
6
9B
W
W-R
B-W
B-R
B-L B-L
B-W(22R-E)
B-W
W-R
R-G
B
BR
B
GR
Y-R
B-W
Y-R
BR-W
G
G-R
Y-R
L-Y
Y-R
G-Y
GR-B
W-BR-W
R-G
BR
W-R
W-R
Y-R
R-Y
B-W
Y-R
Y-R
W
B-R
WR W-R
W-R
W
B-L
B-W
B-W
B-W
B-R
B-R
B-R
B-R
B-R
B-R
W-R
W-R
W-R
W-R B
R
BR
W-B
W-B
R-G
Y-R
W-B
B-R
Y-R
B
Y-R
W-B
B-W
W-B
B-R
R-Y
W-R
B-W
BR
100A A
LT
40A A
M1
30A A
M2
4A
2A
1A
7
(22R-E)(2L-T)
7. 5AST
7. 5AIGN
B-W
R-G
15AEFI
R-G
FP
OX1
+B
T1
VF
B-L
(2L-T)
1 A1B
R
AM1
B-W
2
BR
E1
3
(2L-T)
(22R-E
)
(2L-T)
(2L-T)
B-W
R-G
Y-R
Y-R
Y-R
W-R W-R
B
8B
A
B
C
D
E
F
G
H
I
K
L
M
N
O
P
Q
R
S
J
1
R-Y
B
BR
GR
(22R-E)
BR-W
G
G-R
L-Y
GR-B
G-Y
W-R
(2L-T)
BR
(22R-E
)
* The system shown here is an EXAMPLE ONLY. It is different to the actual circuit shown in the wiring diagram section.
[A]
[B]
[C]
[D]
[E]
[G][F]
[H]
[I]
[J]
[K]
[L]
C19
A 5
H11
K 2
I 9 I11
I10
I12 F37 D 1
I 6 (A),(B)
S40 (A), S41 (B)
S38 (A), S39 (B)
2
2 2 2
B-W
Fender Apron LH
(Shielded)
EFI MAINRelay
Fender Apron LH Left Kick Panel
Starting
IntakeManifold RH
Power Source Engine Control
Circuit OpeningRelay
Air Flow Meter
HeatedOxygenSensor
Knock Sensor
Injector No.1
Injector No.3
Injector No.2
Injector No.4
Fuel Pum
p
Data LinkConnector 1
Ignition SW
Starter Relay
Starter
Battery
Em
ission EC
U <9-8>
M O
VE
RA
LL
EL
EC
TR
ICA
L W
IRIN
G D
IAG
RA
M
194
SC
ION
xB (E
M0091U
)
M195
SC
ION
xB (E
M0091U
)
[A] : System Title
[B] : Indicates the wiring color.
Wire colors are indicated by an alphabetical code.
B = Black W = White BR = Brown
L = Blue V = Violet SB = Sky Blue
R = Red G = Green LG = Light Green
P = Pink Y = Yellow GR = Gray
O = Orange
The first letter indicates the basic wire color and thesecond letter indicates the color of the stripe.Example: L – Y
L(Blue)
Y(Yellow)
[C] : The position of the parts is the same as shown inthe wiring diagram and wire routing.
[D] : Indicates the pin number of the connector.The numbering system is different for femaleand male connectors.Example : Numbered in order
from upper left tolower right
Numbered in orderfrom upper right tolower left
The numbering system for the overall wiring diagram is the same as above
[E] : Indicates a Relay Block. No shading is used and only the Relay Block No. is shown to distinguishit from the J/B.Example : Indicates Relay Block No.1
[F] : Junction Block (The number in the circle is the J/B No. and the connector code is shown beside it). Junction Blocks are shaded to clearly separate them from other parts.
3C indicates thatit is insideJunction BlockNo.3
Example:
[G] : Indicates related system.
[H] : Indicates the wiring harness and wiring harnessconnector. The wiring harness with maleterminal is shown with arrows ( ).Outside numerals are pin numbers.
Female Male ( )
[I] : ( ) is used to indicate different wiring andconnector, etc. when the vehicle model, engine type, or specification is different.
[J] : Indicates a shielded cable.
[K] : Indicates and located on ground point.
[L] : The same code occuring on the next page indicates that the wire harness is continuous.
SYSTEM INDEXM
OV
ER
AL
L E
LE
CT
RIC
AL
WIR
ING
DIA
GR
AM
196
SC
ION
xB (E
M0091U
)
SYSTEMS LOCATION SYSTEMS LOCATIONABS 13–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air Conditioning 18–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Audio System 15–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Back–Up Light 8–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Charging 1–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cigarette Lighter 7–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Combination Meter 16–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Door Lock Control 11–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electronically Controlled Transmission and A/T Indicator 3–2. . . . . . . . .
Engine Control 2–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fog Light 12–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Wiper and Washer 8–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Headlight 4–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Horn 5–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ignition 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Illumination 6–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interior Light 7–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Key Reminder 9–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Light Reminder 9–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Multiplex Communication System (CAN) 13–11. . . . . . . . . . . . . . . . . . . . .
Power Source 1~19–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Window 10–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PTC Heater 18–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Radiator Fan and Condenser Fan 17–2. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Window Defogger 17–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Wiper and Washer 15–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Remote Control Mirror 12–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Seat Belt Warning (Before Dec. 2005 Production) 9–2. . . . . . . . . . . . . . .
Seat Belt Warning (From Dec. 2005 Production) 19–4. . . . . . . . . . . . . . . .
Shift Lock 9–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SRS (Before Dec. 2005 Production) 14–2. . . . . . . . . . . . . . . . . . . . . . . . . .
SRS (From Dec. 2005 Production) 19–2. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Starting 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stop Light 9–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Taillight 6–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TRAC 13–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Turn Signal and Hazard Warning Light 5–2. . . . . . . . . . . . . . . . . . . . . . . . .
Two Way Flow Heater 18–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VSC 13–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wireless Door Lock Control 11–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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