Kenworth SmartWheel KM816010, Руководство по устранению неисправностей

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(01/02) KM816010 Page 29 of 44
MAINTENANCE MANUAL
Kenworth SmartWheel Troubleshooting Guide
16
E. Headlight Flash Does Not Work
NOTE: Use this section only if headlights or headlight flash does not work. If none of the Smart Wheel functions work,
go to Section A.
E1. Symptom: Headlights do not turn on.
E1-1. Possible cause: No power or ground in headlight circuit.
Check Result What To Do Next
E1-1A
Headlamp circuit breaker or
fuse 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-
nectors.
E1 -1 C
Unplug 8-way connector from elec-
tronics module. Check for continuity
from pin 4 on harness connector to
ground. Continuity to cab ground. Go to E1-2 .
No continuity. Trace ground circuit from module to
cab ground.