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Page Title:
TAILLIGHT DOES NOT OPERATE. (Cont) |
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 TM 9-2330-385-14
4. TAILLIGHT(S) DO NOT OPERATE (CONT).
2.1.
KNOWN INFO
TEST OPTIONS
WARNING
Read WARNING
Truck electrical system OK.
Continuity test.
on Page 4-56.3
All other lights on trailer
operate.
REASON FOR QUESTION
Is continuity measured
POSSIBLE PROBLEMS
If LED composite light ground
between LED composite
wire pigtail is faulty, LED
light, ground wire pigtail and
LED composite ground wire
composite light will not operate.
a known good ground?
pigtail faulty.
LED composite light faulty.
Rear junction box faulty.
Wire 1008/21-29 faulty.
Replace LED
composite light
ground wire pigtail
NO
(Para 4-29). Verify
repair, go to Step 10
of this Fault.
YES
Go to Step 4.1 of this
Fault.
4-56.2
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