Enhanced Easy-StopTM Trailer ABS

Enhanced Easy-StopTM Trailer ABS

Training

Enhanced Easy-StopTrailer ABS

• System configurations to meet any air-braked trailer application• 2S / 1M, 2S / 2M, 4S / 2M, 4S / 3M

• Power line carrier communications (PLC)• A method of multiplexing information and power on the same set

of wires

• Meets March 1, 2001 requirement for in-cab trailer ABS indicator lamp

• Diagnostic flexibility• Toolbox PC diagnostics

• Pro-Link 9000, Pro-Link Plus

• Blink code

• Generic inputs / outputs• Ability to monitor or control a given trailer function

• Access to future trailer communication technologies (i.e. status of lift axle or door latch, tire pressure, reefer temperature, load density, distribution shift)

Enhanced Easy-StopTrailer ABS

• Integrated two modulator design for 2M and 3M system• Lighter weight

• Compact design

• Easier installation

• Serviceability• ECU & modulator individually serviced

• Fewer components

• Service interval indicator

• Electronic odometer

• Notebook function• Data storage within ECU microprocessor

Enhanced Easy-StopTrailer ABS

System Configurations:

• 2S / 1M basic - for converter dollies and semi-trailer applications

• 2S / 2M standard - for single or tandem axle semi-trailer applications

• 2M (4S / 2M) premium - for tandem axle semi-trailer, multi-axle• Capable of being extended to a 4S / 3M system for, multi-axle or

full trailer

System Configuration Benefits:

• Increased control

• Increased stability

• Tire wear protection

New Items2S / 1M Basic System

• 4x2 electrical connections (2)• Electrical connection for solenoid is external

• Combination power / diagnostic connector• Optional power / diagnostics cable or power-only cable

• One generic I / O available

• 3/8" control port vs. previous model 1/4"

• Serviceability

• Can be installed as complete assembly or mounted separately (longer valve cable)

• Elimination of LED on top of ECU

2S / 1M Basic System

Trailer ABS Valve (2M)

• Very compact boxer valve

• Use of triple solenoid instead of two double solenoids

• Internal connections of solenoids (no cables)

• No check valves

• 6 outlet ports

• Tank mountable

2S / 2M Standard System

• 2S / 2M only

• One 4x2 electrical connection for power / diagnostics• One generic I / O available

• Dual modulator assembly• Internal electrical solenoid connection

• 1/4" control line

• Serviceable

• Elimination of LED on top of ECU

2M ABS-Relay Valve With ECU

Premium System

• 2S / 2M, 4S / 2M, and 4S / 3M capabilities

• 4x2 electrical connectors (2)• Combination power / diagnostic connector

• Additional connector for external modulator on 4S / 3M and / or generic I / O's

• 5 generic I / O's available

• Serviceable

• Elimination of LED on top of ECU

2M ABS-Relay Valve With ECU

Enhanced Easy-Stop ECU

Enhanced Easy-Stop ECU

Warning lamp (frame grounded) Secondary power (stoplight) X1.2Primary power (permanent) X1.3Ground X1.4Generic IO D1 X1.5Power output (diagnostic tool) X1.6SAE J 1708 B X1.7SAE J 1708 A X1.8

POWER: X1

H1 H2 Z2Z1

at BASIC version not available

X6.1 Generic IO D2X6.2 Generic IO A1X6.3 Generic IO A1X6.4 Sensor power supply 5V/12VX6.5 GroundX6.6 L-Modulator AVX6.7 L-Modulator EVX6.8 Generic IO D3

X5 X4 X3 X2

Generic I/O's: X6

4 3 2 1

8 7 6 5

8-pin connectors X1 & X6:(from outside)

Internal modulator connector:X7.1 H1 EV1X7.2 H1/H2 AV X7.3 GroundX7.4 H2 EV2 top

bottomat STANDARD version not available

at BASIC not available

Enhanced Easy-Stop Pinning

X1.1

YE2

YE1

supply line

air tank

control line

Enhanced Easy-Stop2S / 1M Installation

YE1

YE2

supply line

air tankcontrol line

Enhanced Easy-Stop2S / 2M Installation (Facing Forward)

Enhanced Easy-Stop4S / 2M Installation (Facing Forward)

YE1 YE2

BU1 BU2

supply line

air tank

control line

YE1 YE2

BU1 BU2

supply line

air tank

control line

external ABS relay valve

Enhanced Easy-Stop4S / 3M Installation

TCS II

supply line

air tankcontrol line

power line PLC

SAE J 1708/1587 trailer bus ThermoKing

GPS / GSMunit

Pu

Generic I / O 1:lift axle control

Generic I / O 2:dome light control

Generic I / O 3:pressure sensor

Enhanced Easy-StopGeneric I / O Applications

Power Line Communications

Background:

• Requirement: • Need to communicate information between tractor and

trailer

• FMVSS 121 requirement for in-cab trailer ABS indicator lamp by March 1, 2001

• Fleets strongly oppose changing existing J560 connector or adding another

• Solution: • Power line carrier communications (PLC)

• Industry group: PCL4trucks

Power Line Communications

Introduction:

• PLC is a method of multiplexing information and power on the same set of wires

• Information is converted to radio frequency (RF) signals and placed on the power line

• Co-exist same way different radio and television signals co-exist in air• Occupy different frequency ranges

• Power (DC) = 0 hz

• PLC = 100 K to 400 khz.

• Wires used are ABS power (blue wire) and ground (white wire)

Power Line Communications

PLC Signaling:Two Waveforms for Each Binary State

Differ by 180 Degrees

Starts Positive

Starts Negative

Power Line Communications

Messages - cab mounted trailer ABS warning light:

• Defined in SAE J2497• Tractor PLC device controls indicator lamp based on messages sent from

trailer PLC ABS.• Light control messages sent every 0.5 seconds

• Warning light ON message is message identifier (MID) 10

• Warning light OFF message is message identifier (MID) 11

. . .11 11 11 10 10 10 10 . . .light on

light offLight On When ON Message Received

Light Off 2.5 Seconds After Last ON Message and Receiving OFF Messages.

11

light off

light on. . .10 10 11 11 11 11 11. . .

Diagnostics

Blink Code Activation

• The blink code can be activated by different modes.The blink code activation is accepted only if there are no wheel speeds present

• Constant Power Activation Mode: Switching on the ignition for more than one, but less than five seconds, switching off an on again. Then the warning lamp starts to blink. The stop light power supply may be active simultaneously. The fault code will be displayed three times

Diagnostics

Blink Code Activation (cont'd.)

• Blink Code Tool Activation Mode: Pushing the button on the blink code tool (grounding the A line of the SAE J1708 diagnostic interface) for more than 0.5 seconds. There is no time limit for this activation. As long as the A line is grounded the warning light is switched on. The blink code starts a short time after finishing the ground connection

• If the blink code has been activated once it will not terminate before the code has been completed. Code will only flash once

• If there is no actual failure the warning lamp doesn't blink. Stored faults and re-configure are available through Tool Box PC diagnostics

ignition

external trailer indicator lamp - faults repeat three times

on

off

on

off

1 to 5 sec

2 sec

sensor failure BU1

0.4 sec

Remark: stop light power supply may be active simultanously

2 sec

0.9 sec

If stop light is applied the warning lamp is on during activation

1.3 sec

DiagnosticsBlink Code Activation via Ignition

1

push button at blink code tool

external trailer indicator lamp - fault shows only once

on

off

on

off

sensor failure BU1

0.4 secLEDon

off

2 sec0.9 sec

no time limitation for activation, min. 0.5 sec

1.3 sec

0.5 sec

2 3

1 2 3

DiagnosticsBlink Code Activation via Blink Code Tool

sensor failure BU1

DiagnosticsFailure Number Component

3

4

5

6

7

9

10

11

14

15

16

17

18

Sensor failure BU1

Sensor failure YE1

Sensor failure BU2

Sensor failure YE2

External modulator failure RD (L)

Internal modulator failure inlet valve #2

Internal modulator failure inlet valve #1

Internal modulator failure outlet valve

Power supply failure

ECU-internal failure

SAE J1708 failure

SAE J2497 failure

Generic I.O. failure

Diagnostics

• Sensor gap faults• Following a sensor gap fault, upon power up, after

adjusting sensor, the light will come on and stay on until the ECU detects wheel speed

• All other sensor faults• Once fixed, all other sensor faults (i.e. breaks, loose

connections) upon power up will execute a normal bulb check without wheel speed input needed

• Sensor resistances should be between 900-2000 ohms

Sensor Adjustment

• Self adjusting• Push sensor in until you have contact with tooth

wheel

• Wheel end play will push sensor away from tooth wheel

• Required gap of .040 or less

• Wheel bearing adjustment must be within spec (0 to .005 run-out) to maintain proper sensor adjustment

Diagnostic Tools

• Blink code• Single integer fault codes, eliminates expert mode

• Automatic clearing of faults after 1,000 power-ups or 250 hours of operation

• Warning lamp vs. blink code tool sequence

• Pro-Link• No significant changes to functionality

• Tool Box PC diagnostics

Tool Box PC Diagnostics

Enhanced Easy-Stop Trailer ABS - Training 10-09-01