ELECTRICAL WIRING DIAG RAMS

HOW TO READ THIS SECTION PIN NUMBER

Pin

% When connectors with different numbers of terminals are used with the same parts, the pin number and the numbers of terminals are specified. e.g. (1 14) = No. 1 pin14 terminals connector

Numbered in order Numbered in order from upper left to from upper right to lower right lower left

Female Ma'e BE0832

Male & female connectors distinguished by shape of their internal pins.

All connectors are shown from the open end, and the lock is on top.

Female / Male

BE0833

JUNCTION BLOCK OR RELAY BLOCK Wire Color Wire Color

I #'

Block Inside

WIRE COLOR Wire colors are indicated by an alphabetical code.

B = Black BR = Brown G = Green GR = Gray L = Blue LG = Light Green 0 = Orange P = Pink R = Red V = Violet W = White Y = Yellow

The 1 s t letter indicates the basic wire color and the 2nd indicates the stripe color

Example: R-G indicates a Red wire with a Green stripe.

ABBREVIATION The following abbreviations are used in this wiring diagram.

A.B.S. = Anti- Lock Brake System A/C = Air Conditioner A/T = Automatic Transmission CB = Circuit Breaker CD = Compact Disc COMB. = Combination ECT = Electronic Controlled Transmission ECU = Electronic Controlled Unit EFI = Electronic Fuel Injection EGR = Exhaust Gas Recirculation FL = Fusible Link ISC = Idle Speed Control

LH M I T O/D OX PPS RH SW TCCS TEMS VSV w l w/o

= Left-Hand = Manual Transmission = Overdrive = Oxygen = Progressive Power Steering = Right-Hand = Switch = Toyota Computer Controlled System = Toyota Electronic Modulated Suspension = Vacuum Switching Valve = With = Without

SYSTEM INDEX TOYOTA SUPRA 1990 Model (Page 1 to Page 9)

SYSTEMS LOCATION SYSTEMS LOCATION

A.B.S. (Anti-Lock Brake System) PPS

Air Conditioner, Cooler and Heater Power Seat

Auto Antenna Power Source

Power Windows Back-up Lights

Charging Radiator Fan and Condenser Fan

Radio and Tape Player Cigarette L~ghter

Clock Rear Window Defogger

Rear Wiper and Washer Combination Meter

Remote Control Mirrors with Heater Cruise Control

Shift Lock System Door Locks

SRS Airbag ECT (Electronic Control Transmission)

Starting Engine Control

Stop Lights Fog Lights

Taillights and Illumination 5-4

Front Wiper and Washer

Headlight Cleaner TEMS

Theft Deterrent System

4-8 Headlights

Horn Turn Signal and Hazard 3 -4

Unlock and Seat Belt Warning @ 6-1 Interior Lights

W 4

W-R 8

I b

1

I , F 3

2 I , : -

m

-

e 1 to Page 9) I

'? (Ex. Canada A IT )

CLUTCH START SW (MIT I

+ To Theft Deterrent Computer 14.8)

2 , B-0 I ,, - 2 0 -y

T

I- . E a - r EFI MAIN

RELAY

11

To Cruise Control Clutch SW (5-21

START INJECTOR r lME SW

INJECTOR

sunder r~ght front pillar f = Located on back panel

Engine Control (7M-GE)

E01 #10 STA STJ NSW ISC ISC G- G2 NE IGT IGF THW OX1 'SV FG EGR SPD FP THA VS VC BATT Lk I wI 1 4 E2 L l L2 L3 AIC

W DEF ECT LP E l 1 +Bl

I IMIT) B-Y IA IT) B-W

VSV (For Intake Air Control)

B-R TO ECT

Y-L - C C I I I" f\ T C C I I f i l A T

- ~ r n rrn. I ER TEMP. SENSOR

EGR GAS TEMP. SENSOR (California)

8 - Y

FIDL

THW

THG

LC."

$ 1 THROTTLE POSITION SENSOR I I VSV (For EGR) I

I 2 W-R

EGR VTA

CHECK ENGINE

1 u-n G L-R

+B1 L-R

4 - VC

LG-R LG-R

6 vs

B R BR - E2 5 LG

7 OX SENSOR (Sub.)(California)

LG THA

1 . (b

BR E l l

m R -L I HT

o x 2 a

ISC3 ISC4 ISC2

W

IG SW AIC

(COMB. METER)

1°/12 Y From "GAUGE" Fuse - 12-51 (Wire t o Wire \

G R B-O \Connector 1 From "IGN" Fuse (1.7)

L-R L-R From AIC Amplifier 17-71

R.W

To TEMS Computer (3-71

I I OX SENSOR (Main)

B L2

I ,---A C L3

W , 8 CHECK CONNECTOR

I DEF

9 GR L - - { A ~ ~ I V F l SPD LP

R-Y R-Y = From Defogger Relay 12.4)

P = From Headl~ght Relay 15-71

R-L To Speed Sensor 12-1 I

, - =. To ECT ECU (2-6) 4 W

'ECT OX1 I - . OX1 IGT

LG-B KNOCK SENSOR

"'1 r L - - 4

6 R-G R-G IGF

TE 1 I E2 EI B R IG. TT T C 'E l KNK . - , , , -

18 17 (16 V From TEMS Computer (3-7)

YiB From ECT ECU (2-61 I 6 = From lgn~ter (1-71

W G-

W . R fli30 G2

W.L #20

G- * I 0 E01 -- STJ E02 -

IGNITION COIL AND IGNITER

IGNITION COIL

SPEED SENSOR I-- ; = To Light Failure Sensor (5-3)

RADIATOR FLUID LEVEL SW

V-G

FUEL SENDER - 1 W-B

I

PARKING BRAKE SW

3 3

OIl0

m -L - BRAKE FLUID

d h LEVEL SW

1 4

u TO Alternator " L ( 1 - 7 ) m[

From Cruise Control Computer (5-21 From A.B.S. Computer 03-21

Ground points a = Located on left fender b = Located on engine block C = Located under left front pillar I I

t@3 Rear Window Defogger

OIL

CRlVE CIRCUIT

VOLT

1 O IL PRESSURE SENDER

FUEL SENDER

L-R

1 4

6 BR

TURBO LT PRESSURE SENSOR m

313 BR

8 D- From Igniter (1-7)(8-8)

WATER TEMP. SENDER

d = Located under r ~ g h t front p~ l l a r e = Located beh~nd r a d ~ o f = Located on back panel

I

ECT (Electronic Controlled T r a n s m i s s i o n )

f- T o Heater Relay, A IC Relay Box & Heater Control Assembly 17 2) T o A.B.S. Computer 18-21

ECT PATTERN SELECT SW From "ECU-IG" Fuse 13-6)

I F rom A I T R 0 0 "DOME" Fuse (6-7)

t i INDICATOR SW (A IT ) N 0 0

From Stop L ~ g h t SW 15-31 2 0 Q

t 4/~13/6616/6/s,l ' hL R-B ( A I T ) - --

T o A B.S. Computer , W - ?I s, -

IT Z 18-21 - W ~ r e t o W ~ r e

oI 23 ' , 2 0 , ~ : (Connector )$ I8 m 24 0 22

I G t~ B K L ~ N P 1

P-G

I ECT ECU

Wire t o Wire Connector

ECT SOLENOID

From "CIG" Fuse

From "ECU-IG" Fuse (3-7)

From Stop L~gh t SW (5-3) 1

L-R I

G-R I G-W SHIFTLOCK

P2 CONTROL COMPUTER

TOYOTA SUPRA (Cont'd)

J I WIPER A N D WASHER SW 07

L-6 P-E - 4

> '

W-R L 5 L-0

5 w 6 a:

HEADLIGHT CLEANER RELAY

i

m 5 5 ' 3 5

[r

i 3 d > I

11

To L~gh t Control SW (5-7)

OR RH AETER)

p GNAL :E L IGHT R H

IF- % LIGHT)

1

HORN RELAY

3 TEMSSI

(w i l re t o Wire Connector

STEERING SENSOR

TOYOTA SUPRA 3

TEMS COMPUTER

L

ft Lock Control Computer (2-8) o 3 .- 0

U 2 *

W use Control Main Relay (5-1) .c c rn c 2 (0 I.S. Computer (8-2) 0-

%ration Relay No. 2 (5-7) 8- t% U? a to Antenna Motor and Control Relay (6.5) zu, p c m o T ECU 12-51 f & u E @ 5

4

-1

2

STEERING SENSOR

SS1 SS2 VS H L SL N L M- M+ SOL

7' LT

I TEMS INDICATOR $ (COMB. METER)

1

+B HCK SPD L3 L2 L1 STP

US z2 u = 5~ 1b ,"I ,"& F tl"

TEMS ACTUATOR

l0/1o

11

1°/12 4 / 1~ >

$ 7' '112

u

a

11

3 6

12/12

A L

1/12 a

v

a

4/1~

9/12 p 2/12

+

A L

5 1/10 a

v

m

5/1~

7/12

< I 2 0

3/12

9 Y12

4 TOYOTA SUPRA (Cont'd)

ASSISTANT

M M

POWER WINDOW MOTOR

17 POWER SEAT SW (LU!

SUPPROT MOTOR6

Ground points a = Located on left fender C = Located under left front pillar d = Located under right front p~llar f = Located on back panel

-I 1 1 IPOWER SEAT SW (SLIDE)

- - a a a

J 3

3

1 > 12

1

-I 5 q 10 =? 2 -I u :

SW (LUMBER) u

7 d

5 P '"

1 '

I* W-B

FRONT

-I

SEAT SLIDE 2 REAR

VERTICAL o

AOTORS POWER SEAT MOTOR

k panel .

DOOR LOCK SOLENOID R H

L-R 4 1

L W P

W-B -- L d N

'r . m

I b u db +

TOYOTA SUPRl I

*&,$9 Theft Deterrent

E E e o : z ;'D

I I I I 1 From Horn Relay(3 5) --

E a m 3 Y - P-B

G-Y

N : - a

-0 - - - W

- b 3 s C n rn

CRUISE CONTROL SW A (COMB. SW) s

0 a

Wire tb Wire ( Connector

I W-B

CRUISE CONTROL VACCUM PUMP w /7M-GTEI

GR-R 2

CRUISE CONTROL VACUUM SW (7M-GTE)

I I

CRUISE CONTROL STOP SW

G -Y G-Y [ 1 R-B R -8 A PI N h: . P-L

P-L

N r

I BR-W BR-n

-

(A IT ) R-\r From ECT ECU (2-6) = 0

T o Neutral Start SW or Starter (1 -2)(8-3)

From ECT Solenoid (2-5) ---+I T o Speed Sensor (2-1) 4

T o Parking Brake SW & Brake Flu id Level SW 12-2)

B-W (A /T ) B-W I A I T I

B -L (M/T) 6-W (A IT ) - B-Y (MIT I - A T - ( M m + k t 9 -

- r! CRUISE CONTROL

(I]

CLUTCH SW (MIT I rn Q

.From "ECU-IG' ' Fuse (3-6)

Stop Lights

I I 3 4 -

1 LICENCE PLATE LIGHT RH

I LICENCE PLATE LIGHT L H I

I REAR SlDE MARKER R H (REAR COMB. LIGHT) I

REAR SlDE MARKER LH (REAR COMB. LIGHT)

w - B l

I T A I L R H (REAR COMB. LIGHT)

(Canada)

- I1

wy AIT INDICATOR

HEATER CONTROL G (USA) ASSY. G-R (Canada)

I ECT PATTERN SELECT SW

W-G

C

CLEARANCE RH

CLEARANCE L H I

FRONT SlDE MARKER R H +@+I FRONT SlDE MARKER LH I

(wire t o wire) Connector

G-R

FOG LIGHT SW 3, G 2 n I

1 W -G

5/1~ I - -

3, G m

%o % 2 0

COMB. METER " " 3 s

&(USA,

CIGARETTE LIGHTER

3 G 3 n 1 ~ - ~

GLOVE BOX GLOVE BOX LIGHT LIGHT SW

3- G I

DEFOGGER SW

3 - G W-G , 3 I

HAZARD SW 3 , G /m? W-G _W-G , 3 -

RADIO AND TAPE PLAYER (WIO CD Player)

G-W To Unlock Warning SW (4-7) - -

BACKLE SW

N-B V-R

4 m

OUT SIDE HANDLE SW

W-B R-L R-L , 2

2 W 2

0 r

0 I

0 I I I - ~ ~ R-G

C) 2

0 C n

A .

SEAT BELT WARNIN';; 2 LIGHT in

To Radio and Tape Player (6-5)(6-6)

To Clock (6-4)

DOOR WARNING LlGHT

I DOOR KEY CYLINDER LlGHT

(USA)

DOOR COURTESY LIGHT R H I I

$ DOOR COURTESY .I LIGHT L H n

, R-W R-W R R , w - -

.I N A 2

I INTERIOR LlGHT I 4 I

DOME" Fuse (6-7)

1

-1

ROOM

-I - R-Y

rn

,From Door Lock Control Relay (4-7)

From Theft Y-B Deterrent - Computer (4-8)

A u t o Antenna Radio and Tape Player

I 5 I 6 I

From "ECU-IG" Fuse ( 3 6 1

Fuse (6-21

(Wire t o Wire Connector)

1

SPEAKER

a LL

SPEAKER

W

2

From "DOME" , L-Y 4/ Fuse (6-21 P

7 AMPLIFIER

7 1 V-R 1 r

A/C BLOWER SPEED CONTROL SW

L-B

- - L-Y L-G --

L-R 3 L-Y

I 2

- L 2";

W rr 3 7 m 11

1

d A 5 4 3

3

A/C AIR MIX CONTROL SERVO MOTOR

v-Y t

a

I R-W 1

W-6 - LG

- I

W-R W-R

L-Y T I L-G ,

T I I I I I I I I I I

I I I I I I 1 I I I I I I I I l l

Conditioner, Cooler and Heater

A/C CHECK CONNECTORS

I - A/C

HEATER CONTROL ASSEMBLY

I AIC WATER TEMP. SW (7M-GE)

SHORT PIN

3 1 q J " J

1 :IR/FRESH CONTROL MOTOR

- 2 > ;

1: w-s, 7 ,WBJ

I I I I V V V

AIC AMBIENT SENSOR

0

0

3 LG-R I 0

s .G-B

0

I 1 Wire to Wire \ > 3 1 Connector

A/C WATER TEMP. SW l7M-GTE) AIC THERMISTOR

C

- "DOME" Fuse (6-71

(Wire to Wire Connector) 1. 1 r b, ? 3 5 : ; - - JJ o o - 5 a

m N-B m ~ = ul

W-B A

o AIC AMPLIFIER

To Parking Brake SW B A

& Brake Fluid Level SW (2-2) - - 9 ,.,

From Stop Light SW 15-31 = G-V\

2 N

INJECTOR @[:

dunder r ~ g h t front plllar f = Located on back panel g = Locared on npht fender

I I I

u Engine Control (7M-

To ECT

Y-L A -

. ECU (2-61 - EFI WATER TEMP.

BRI I *

THROTTLE POSITION SENSOR MI- I 'I

KNOCK SENSOR No

I KNOCK SENSOR No. 2

n w

IGF EGR ISQ VSV2 E01

E02

I B-R B-R R-L

2 ox 3

lSCl

IGT

I " < From TEMS Computer (3-7)

Y-B From ECT ECU (2-6) 5 Fyom Igniter (8-8)

ISC3 #10

#30

ISC4 #20

STJ

TOYOTA SUPRA

rol (7M-GTE)

7 1 8

I

IM IT I 8.Y IA IT I B-W

)NSW A BATTI VSV (For Fuel Pressure Up) I

THW

R-L 1 ) 12 8-R VSV2 I W I -

VSV (For EGR) R-B 1 ( 2 B-R

EGR I ~ I

- I CHECK ENGINE I I c o M B ~ ; " ~ = GR-G 5

W From "GAUGE" Fuse 12-5)

I 1-(Wire t o Wire Connector)

To TEMS ' B-Y Computer 13-7) THG

G 0

FP

I R-L I

:-f-? W

L---* , R-G

From Defogger Relay (2.4)

K N K 2 From Headl~ght Relay 15.7) 8 SPD To Speed Sensor 12-1 1

To ECT ECU 12-61 1 HT OIL To 011 Pressure Sender (2.3)

IGN17 COIL

POSITION SENSOR

LG

VF1

IGT LG-B IGF

L.B lGDA

' L.W 0 x 1 IGDB '

TE1 l3 r-1

I I I E l

' L NE

B I I

I ; #30

Y G2

#20 w-B {-A B # l o EO1

W B 1 B = To Check Connector I8 61

STJ E02 . = To Tachometer (2 31

From "ECU-B" Fuse (8-2)

CENTER AIRBAG SENSOR ASSEMBLY

4 3

From "ECU-IG" Fuse From "IGN" Fuse From "CIG" Fuse (3-6) (1-7) (6-4) 4 1

11 T I T I 4 3

: 8 5 4 3 ( j 2

1 7 14 6

E'/10

AIRBAG INDICATOR LIGHT (COMB. METER)

- - 4 5 i 12 9 9 / 1~

I 5 IL: m

4 1

- 1:

3

W-B -

m 3

CHECK CONNECTOR

b

b = Located on englne block C = Located under left front pillar d = Located under right front p l lar

I