Paccar KENWORTH T2000 User Manual

(01/02) KM816012
MAINTENANCE MANUAL
Kenworth T2000 SmartWheel Troubleshooting Guide
16
0Kenworth T2000 SmartWheel Trou-
bleshooting Guide KM816012 01/02
16
CONTENTS
TITLE PAGE
Related Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Service Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
TIBs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
How to use this Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Tools for Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Troubleshooting Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
A. Start - No Functions Work or Operation is Intermittent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
A1. Possible cause: Open circuit in BA11 or Gnd circuit to elect. module (BATT1 and GND).. . . . . . . . . . . . . . . . .5
A2. Possible cause: Bad electrical connection to hub or slip rings.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
A2. Possible cause: Bad electrical connection to hub or slip rings.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
A3. Possible cause: Bad electronics module or steering wheel hub. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
B. Horn Does Not Work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
B1. Possible cause: No power or ground in horn circuit.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
B2. Possible cause: Bad horn relay in CEP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
B3. Possible cause: Problem in circuit R11HN.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
B4. Possible cause: Bad electronics module or steering wheel hub. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
C. Engine Retarder Does Not Work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
C1. Symptom: Engine retarder will not turn on (all engines). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
C2. Symptom: Retarder works only when button held down or does not turn on.. . . . . . . . . . . . . . . . . . . . . . . . . .17
D. Cruise Control Does Not Work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
D1. Symptom: Cruise Control will not turn on.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
D2. Symptom: Cruise SET will not work.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
D3. Symptom: Cruise RESUME will not work. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
E. Headlight Flash Does Not Work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
E1. Symptom: Headlights do not turn on. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
E1. Symptom: Headlights do not turn on. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
E2. Symptom: Headlights do not flash on with SmartWheel switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
E3. Symptom: Headlights do not blink off with SmartWheel switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
F. Marker Lamp Flash Does Not Work. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
F1. Symptom: Marker lights do not turn on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
F1. Symptom: Marker lights will not turn on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
F2. Symptom: Marker lights do not flash on with SmartWheel switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
F3. Symptom: Marker lights do not blink off with Smart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

Paccar KENWORTH T2000 Specifications

General

Brand	Paccar
Model	KENWORTH T2000
Category	Trucks
Language	English

Summary

Related Documents

Service Manuals

List of service manuals for the T2000 SmartWheel.

TIBs

Technical Information Bulletins related to SmartWheel.

Wiring Diagrams

References to specific wiring diagrams for the SmartWheel system.

Wiring

Purpose

How to use this Troubleshooting Guide

Instructions on how to navigate and use the troubleshooting guide.

Tools for Troubleshooting

A. Start - No Functions Work or Operation is Intermittent

A1. Possible cause: Open circuit in BA11 or Gnd circuit to elect. module (BATT1 and GND).

Checks for power/ground issues in the BA11 circuit to the electronics module.

A2. Possible cause: Bad electrical connection to hub or slip rings.

Diagnosing issues related to connections at the steering wheel hub and slip rings.

A3. Possible cause: Bad electronics module or steering wheel hub.

Troubleshooting steps for faulty electronics module or steering wheel hub.

B. Horn Does Not Work

B1. Possible cause: No power or ground in horn circuit.

Checks for power and ground issues in the horn circuit.

B2. Possible cause: Bad horn relay in CEP.

Diagnosing a faulty horn relay located in the Central Electrical Panel (CEP).

B3. Possible cause: Problem in circuit R11HN.

Investigating potential issues within the R11HN circuit related to the horn.

B4. Possible cause: Bad electronics module or steering wheel hub.

Fault diagnosis for the electronics module or steering wheel hub when the horn fails.

C. Engine Retarder Does Not Work

C1. Symptom: Engine retarder will not turn on (all engines).

Steps to diagnose why the engine retarder fails to activate.

C1-1. Possible cause: No accessory power to electronics module.

Verifying accessory power supply to the retarder electronics module.

C1-2. Possible cause: Problem in retarder wiring.

Troubleshooting wiring issues affecting the engine retarder operation.

C2. Symptom: Retarder works only when button held down or does not turn on.

Diagnosing intermittent or faulty engine retarder activation.

C2-1. Possible cause: No ignition power to electronics module.

Checking ignition power supply to the retarder electronics module.

C3-2. Possible cause: Bad electronics module or steering wheel hub.

Diagnosing faulty electronics module or steering wheel hub for retarder issues.

D. Cruise Control Does Not Work

D1. Symptom: Cruise Control will not turn on.

Diagnosing why the cruise control system fails to engage.

D1-1. Possible cause: No ignition power to electronics module.

Verifying ignition power is supplied to the cruise control electronics module.

D1-2. Possible cause: Problem in cruise control wiring.

Troubleshooting wiring faults within the cruise control system.

D1-3. Possible cause: Bad electronics module or steering wheel hub.

Fault finding for the electronics module or steering wheel hub affecting cruise control.

D2. Symptom: Cruise SET will not work.

Troubleshooting the failure of the cruise control SET function.

D2-1. Possible cause: Problem in cruise control wiring.

Diagnosing wiring issues related to the cruise control SET function.

D2-2. Possible cause: Bad electronics module (assumes cruise turns on).

Fault diagnosis for the electronics module when cruise control SET fails.

D3. Symptom: Cruise RESUME will not work.

Troubleshooting the cruise control RESUME function.

D3-1. Possible cause: Problem in cruise control wiring.

Diagnosing wiring faults for the cruise control RESUME function.

D3-2. Possible cause: Bad electronics module (assumes cruise turns on).

Fault diagnosis for the electronics module when cruise control RESUME fails.

E. Headlight Flash Does Not Work

E1. Symptom: Headlights do not turn on.

Diagnosing why the vehicle's headlights are not illuminating.

E1-1. Possible cause: No power or ground in headlight circuit.

Checking for power and ground supply issues in the headlight circuit.

E1-2. Possible cause: Problem in headlight circuits.

Troubleshooting wiring faults in the headlight circuits.

E1-3. Possible cause: Bad dash switch.

Diagnosing a faulty dash switch affecting headlight operation.

E1-4. Possible cause: Bad headlamps relay in CEP.

Diagnosing a faulty headlamp relay in the Central Electrical Panel (CEP).

E1-5. Possible cause: Bad electronics module.

Fault diagnosis for the electronics module affecting headlight operation.

E2. Symptom: Headlights do not flash on with SmartWheel switch.

Diagnosing why headlights do not flash using the SmartWheel control.

E2-1. Possible cause: Problem in circuit R5HLNO.

Troubleshooting issues within the R5HLNO circuit for headlight flashing.

E3. Symptom: Headlights do not blink off with SmartWheel switch.

Diagnosing why headlights fail to turn off with the SmartWheel switch.

E3-1. Possible cause: Problem with multiplex control system.

Fault finding in the multiplex control system for headlight blinking issues.

F. Marker Lamp Flash Does Not Work

F1. Symptom: Marker lights do not turn on.

Diagnosing why the vehicle's marker lights are not illuminating.

F1-1. Possible cause: No power or ground in marker light circuit.

Checking for power and ground supply issues in the marker light circuit.

F1-2. Possible cause: Problem in marker light circuits.

Troubleshooting wiring faults in the marker light circuits.

F1-3. Possible cause: Bad dash switch.

Diagnosing a faulty dash switch affecting marker light operation.

F1-4. Possible cause: Bad marker lamps relay in CEP.

Diagnosing a faulty marker lamp relay in the Central Electrical Panel (CEP).

F1-5. Possible cause: Bad electronics module.

Fault diagnosis for the electronics module affecting marker light operation.

F2. Symptom: Marker lights do not flash on with SmartWheel switch.

Diagnosing why marker lights do not flash using the SmartWheel control.

F2-1. Possible cause: Problem in circuit R3MLNO.

Troubleshooting issues within the R3MLNO circuit for marker light flashing.

F3. Symptom: Marker lights do not blink off with Smart.

Diagnosing why marker lights fail to turn off with the SmartWheel switch.

F3-1. Possible cause: Problem with multiplex control system.

Fault finding in the multiplex control system for marker light blinking issues.