TM 5-3805-280-24-1
Sub-System Diagnostics
WORK LIGHTS (E1)
YES: Light switch on
CIRCUIT CHECK
monitor controller and
display panel has failed.
Replace.
NO: Check light bulbs,
wire harness, and work
light relay.
T118360 UN21NOV98
Disconnect 16-pin harness connector from monitor controller and display panel.
Ground harness connector pin 20.
Do work lights E1 and E6 operate with key switch in ACC position?
9015
15
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REAR LIGHTS (E9, E10)
Remove fuse block cover.
YES: Fuse is OK. Go to
CIRCUIT CHECK
next step.
Remove fuse F19 from fuse block.
NO: Replace Fuse. If
Using ohmmeter, check fuse for continuity.
fuse blows again, check
circuit for short.
Is continuity measured?
Disconnect harness connector from rear lights switch
YES: Light switch is OK.
S20.
Check light bulbs and
wire harness
Connect ohmmeter across switch connector pins.
NO: Switch has failed.
Replace.
Does ohmmeter read open with switch Off, and
continuity with switch On?
T112437 UN05DEC97
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