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Page Title:
TAILLIGHT(S) DO NOT OPERATE. (Cont) |
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 TM 9-2330-385-14
4. TAILLIGHT(S) DO NOT OPERATE (CONT).
4.1.
KNOWN INFO
TEST OPTIONS
WARNING
Read WARNING
Truck electrical system OK.
Continuity test.
on Page 4-154.3
All other trailer lights operate.
REASON FOR QUESTION
POSSIBLE PROBLEMS
Is continuity measured
If LED composite light ground
LED composite light ground
between LED composite
wire pigtail is faulty, LED
wire pigtail faulty.
composite light will not operate.
ground wire pigtail and a
LED composite light faulty.
known good ground?
Wire 1008/21-29 faulty.
Replace LED
composite light ground
NO
wire pigtail (Para 4-29).
Verify repair, go to Step
12 of this Fault.
YES
Go to Step 6 of this
Fault.
4-154.2
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