Kenworth SmartWheel KM816010 Troubleshooting Manual Download Page 3 | Manualshive

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KM816010

(01/02)

MAINTENANCE MANUAL

Kenworth SmartWheel Troubleshooting Guide

16

Wiring

Figure 16-1

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Summary of Contents for SmartWheel KM816010

Page 1: ...r distribution box 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 1994 Cummins only 15 C2 Symptom Engine retarder will not turn on all engines 19 C3 Symptom Retarder works only when button held down or does not turn on 21 D Cruise Control Does Not Work ...

Page 2: ...x Switch Module K301 415 01 Headlamps w Multiplex SmartWheel Steering Wheel P94 1191 01 Horn Multiplex Steering Wheel R115 5453 01 Headlamps w Multiplex R115 5450 01 Headlamps w MUX Wheel P94 1335 01 Clearance ID Lamps w Multiplex SmartWheel P94 1197 01 Clearance ID Lamps T800A Cabs w Multiplex Steering Wheel R115 5452 01 Clearance ID Lamps BII Cabs w Multiplex Steering Wheel R115 5451 01 Headlamp...

Page 3: ...Page 2 of 44 KM816010 01 02 MAINTENANCE MANUAL Kenworth SmartWheel Troubleshooting Guide 16 Wiring Figure 16 1 ...

Page 4: ...this Troubleshooting Guide Check the multiplex wheel for proper operation according to the Kenworth Multiplex Steering Wheel Operating Manual If none of the functions on the steering wheel work or they work erratically go to Section A Start If some of the functions on the steering wheel work go to the Section for the function that doesn t work Tools for Troubleshooting Kenworth SmartWheel Multiple...

Page 5: ...Page 4 of 44 KM816010 01 02 MAINTENANCE MANUAL Kenworth SmartWheel Troubleshooting Guide 16 Figure 16 3 ...

Page 6: ...eated Connector pins OK Connector pins bad Go to A1 4 Repair or replace connector pins If problem is corrosion eliminate source of moisture A1 3 Check circuit breaker or fuse in power distribution box position Spare 1 2 3 or 4 Circuit breaker good There is a broken wire or connector in the harness or in the power distri bution box Look at the multiplex steering wheel headlamp wiring dia gram and t...

Page 7: ...Page 6 of 44 KM816010 01 02 MAINTENANCE MANUAL Kenworth SmartWheel Troubleshooting Guide 16 Figure 16 4 ...

Page 8: ...teering col umn and from 2 way connector to 6 way connector pins 1 and 2 at mul tiplex module Also check polarity of circuits If reversed no functions will work and module may be damaged Each circuit has continuity No continuity in one or both circuits Continuity is intermittent in one or both circuits as steering wheel is turned Go to A3 1 Go to A2 3 Go to A2 4 A2 3 Extend steering column to full...

Page 9: ...Page 8 of 44 KM816010 01 02 MAINTENANCE MANUAL Kenworth SmartWheel Troubleshooting Guide 16 Figure 16 5 ...

Page 10: ...very thin brass is dry in places Apply contact ring grease available from DSM according to prescribed method Use only this type of grease Check Result What To Do Next A3 1 Connect the multiplex steering wheel tester to the module and the truck harness Follow the steps in the tester manual for testing the Truck Module Module tests OK Module fails test Go to A3 2 Replace module A3 2 Follow the steps...

Page 11: ...Page 10 of 44 KM816010 01 02 MAINTENANCE MANUAL Kenworth SmartWheel Troubleshooting Guide 16 Figure 16 6 ...

Page 12: ...tc Replace circuit breaker or fuse If horn still does not work go to B1 2 B1 2 Horn wiring connections leading to horn ckt C53HN Use multiplex steering wheel horn wiring diagram R115 5453 Wires OK connectors clean and tight Go to B2 Wires broken frayed or connectors loose damaged corroded Repair or replace wires and or con nectors Check Result What To Do Next B2 1 Press horn button on steering whe...

Page 13: ...Page 12 of 44 KM816010 01 02 MAINTENANCE MANUAL Kenworth SmartWheel Troubleshooting Guide 16 Figure 16 7 ...

Page 14: ...ector to terminal marked S at horn relay position in power distribution box Ckt has continuity No continuity Go to B4 There is a break in the circuit between the module and the power distribution box Trace ckt R11 HN Check Result What To Do Next B4 1 Plug 8 way connector back into mod ule Locate one way slide terminal in ckt R11 HN and disconnect Check for continuity between R11 HN leading to modu...

Page 15: ...Page 14 of 44 KM816010 01 02 MAINTENANCE MANUAL Kenworth SmartWheel Troubleshooting Guide 16 Figure 16 8 ...

Page 16: ...B Determine cause for fuse to blow shorted wire etc Replace circuit breaker or fuse If retarder still does not work go to C1 1B C1 1B Continuity in ground circuit for retarder relays ckt C97CS from relay coil to cab ground Connector OK continuity to cab ground Go to C1 2 Connection loose broken corroded Repair or replace connector s tighten ground stud Check Result What To Do Next C1 2A Retarder w...

Page 17: ...Page 16 of 44 KM816010 01 02 MAINTENANCE MANUAL Kenworth SmartWheel Troubleshooting Guide 16 Figure 16 9 ...

Page 18: ... marked to terminal directly across from it common to normally open This retarder setting should now work If it does replace relay Repeat for other relay if it also clicked If retarder settings do not work with jumper in place Go to C1 4 No click heard Go to C1 4 Check Result What To Do Next C1 4A Unplug the 14 way connector from the multiplex module Check continuity of ckts C98JB and C96JB from p...

Page 19: ...Page 18 of 44 KM816010 01 02 MAINTENANCE MANUAL Kenworth SmartWheel Troubleshooting Guide 16 Figure 16 10 ...

Page 20: ... a cab ground Voltmeter reads battery voltage No voltage Go to C2 1 B Go to C2 2 Go to C2 1B C2 1B Check circuit breaker or fuse in power distribution box position Spare 19 20 or 21 Circuit breaker fuse OK An open circuit exists between the power dist box the electronics module Trace circuits PCB 19 20 21 Circuit breaker bad fuse Replace circuit breaker or blown fuse Determine cause for fuse to bl...

Page 21: ...Page 20 of 44 KM816010 01 02 MAINTENANCE MANUAL Kenworth SmartWheel Troubleshooting Guide 16 Figure 16 11 ...

Page 22: ...from elec tronics module Check voltage between connector pins 4 and 3 with ignition on Voltmeter reads battery voltage Go to C3 2 No voltage Go to C3 1C C3 1 C Check circuit breaker or fuse in power distribution box position Spare 33 Circuit breaker fuse OK There is an open circuit from the power distribution box to electronics module Trace ckt PCB 33 Circuit breaker bad fuse blown Replace circuit...

Page 23: ...Page 22 of 44 KM816010 01 02 MAINTENANCE MANUAL Kenworth SmartWheel Troubleshooting Guide 16 Figure 16 12 ...

Page 24: ...ltage between connector pins 4 and 3 with ignition on Voltmeter reads battery voltage Go to A3 No voltage Go to D1 1C D1 1 C Check circuit breaker or fuse in power distribution box position Spare 33 Circuit breaker fuse OK There is an open circuit from the power distribution box to electronics module Trace circuit PCB 33 Circuit breaker bad fuse blown Replace ckt breaker or fuse Deter mine cause f...

Page 25: ...Page 24 of 44 KM816010 01 02 MAINTENANCE MANUAL Kenworth SmartWheel Troubleshooting Guide 16 Figure 16 13 ...

Page 26: ...ors again No continuity after On button is pushed Problem could be in electronics module or steering wheel hub Go to A3 Check Result What To Do Next D2 1A Check cruise set circuit between pin 3 of 14 way connector at electronics module and engine ECM DDEC Ckt 541 CAT Ckt C978 Cummins Ckt 553 Wiring connectors OK all circuits have continuity Go to D2 2 Wire broken connector unplugged loose or corro...

Page 27: ...Page 26 of 44 KM816010 01 02 MAINTENANCE MANUAL Kenworth SmartWheel Troubleshooting Guide 16 Figure 16 14 ...

Page 28: ...Cummins Ckt 523 Wiring connectors OK all circuits have continuity Go to D3 2 Wire broken connector unplugged loose or corroded Repair or replace wires and or con nectors Check Result What To Do Next D3 2A Unplug 14 way connector from elec tronics module Turn on ignition Activate cruise control by pushing on button on steering wheel Check for continuity between pins 1 7 on module when res button is...

Page 29: ...Page 28 of 44 KM816010 01 02 MAINTENANCE MANUAL Kenworth SmartWheel Troubleshooting Guide 16 Figure 16 15 ...

Page 30: ...e in cab power distribution box HEAD LPS Circuit breaker or fuse OK Go to E1 1B No continuity Determine cause for fuse to blow shorted wire etc Replace circuit breaker or fuse If headlamps still do not turn on go to E1 1B E1 1 B Ground circuit of headlamp harness in engine area Connection tight ground circuit OK Go to E1 1C Connection loose wires frayed or broken Repair or replace wires and or con...

Page 31: ...Page 30 of 44 KM816010 01 02 MAINTENANCE MANUAL Kenworth SmartWheel Troubleshooting Guide 16 Figure 16 16 ...

Page 32: ...1 2B Wires frayed broken connectors loose or unplugged Repair replace wires or connectors E1 2B Continuity of ckt R5NC from dash switch to electronics module 8 way connector pin 6 and ckt R5HL from dash switch to power distribution box Circuit has continuity Go to E1 3 No continuity Trace circuits check for broken wire or bad connections Check Result What To Do Next E1 3A Unplug headlamp dash swit...

Page 33: ...Page 32 of 44 KM816010 01 02 MAINTENANCE MANUAL Kenworth SmartWheel Troubleshooting Guide 16 Figure 16 17 ...

Page 34: ...elay click in power distri bution box Click heard Remove headlamp relay Use jumper wire from terminal marked to terminal directly across from it not S terminal common to nor mally open Headlights should come on If headlights work replace relay If headlights do not work the prob lem exists in truck wiring No click heard Go to E1 5 Check Result What To Do Next E 1 5A Turn off ignition Unplug 8 way c...

Page 35: ...Page 34 of 44 KM816010 01 02 MAINTENANCE MANUAL Kenworth SmartWheel Troubleshooting Guide 16 Figure 16 18 ...

Page 36: ...ll not blink off completely with the Smart Wheel They will change to their daytime mode when the headlamp flash button is pressed Check Result What To Do Next E2 1A Unplug the 8 way connector from the electronics module Check continuity of ckt R5NO from pin 5 of the connector to dash head lamp switch Ckt has continuity Go to E1 1 No continuity There is a break in the circuit between the module and...

Page 37: ...Page 36 of 44 KM816010 01 02 MAINTENANCE MANUAL Kenworth SmartWheel Troubleshooting Guide 16 Figure 16 19 ...

Page 38: ...wer distribution box MKR LPS Circuit breaker or fuse OK Go to F1 1B No continuity Determine cause for fuse to blow shorted wire etc Replace circuit breaker or fuse If marker lamps still do not turn on go to F1 1B F1 1B Ground circuit of trailer cable to cab ground or cab roof harness for cab marker lights Connection tight ground circuit OK Go to F1 1C Connection loose wires frayed or broken Repair...

Page 39: ...Page 38 of 44 KM816010 01 02 MAINTENANCE MANUAL Kenworth SmartWheel Troubleshooting Guide 16 Figure 16 20 ...

Page 40: ... connectors OK Go to F1 2B Wires frayed broken connectors loose or unplugged Repair replace wires or connectors F1 2B Continuity of ckt R3NC from dash switch to electronics module 8 way connector pin 3 and ckt R3ML from dash switch to power distribution box Circuit has continuity Go to F1 3 No continuity Trace circuits check for broken wire or bad connections Check Result What To Do Next F1 3A Unp...

Page 41: ...Page 40 of 44 KM816010 01 02 MAINTENANCE MANUAL Kenworth SmartWheel Troubleshooting Guide 16 Figure 16 21 ...

Page 42: ...ution box Click heard Remove marker lamp relay Use jumper wire from terminal marked to terminal directly across from it not S terminal common to nor mally open Marker lights should come on If marker lights work replace relay If marker lights do not work the problem exists in truck wiring No click heard Go to F1 5 Check Result What To Do Next 1 5A Turn off ignition Unplug 8 way con nector from elec...

Page 43: ...Page 42 of 44 KM816010 01 02 MAINTENANCE MANUAL Kenworth SmartWheel Troubleshooting Guide 16 Figure 16 22 ...

Page 44: ... Problem with multiplex control system Check Result What To Do Next F2 1A Unplug the 8 way connector from the electronics module Check continuity of ckt R3NO from pin 2 of the connector to dash marker lamp switch Ckt has continuity Go to F1 No continuity There is a break in the circuit between the module and the dash switch Trace ckt R3NO F3 1A Press Smartwheel marker lamp flash switch Listen for ...

Page 45: ...Page 44 of 44 KM816010 01 02 MAINTENANCE MANUAL Kenworth SmartWheel Troubleshooting Guide 16 ...

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