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Page Title:
TAILLIGHT DOES NOT OPERATE. (Cont) |
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 TM 9-2330-385-14
4. TAILLIGHT DOES NOT OPERATE (CONT).
4.1.
KNOWN INFO
WARNING
TEST OPTIONS
Read WARNING
Truck electrical system OK.
on Page 4-58.3
Continuity test.
All other lights on trailer
operate.
LED composite light ground
REASON FOR QUESTION
Are 22 to 28 vdc measured on
wire pigtail OK.
If 22 to 28 vdc are not present
wire 1008/21-29?
on wire 1008/21-29, LED
composite will not operate.
POSSIBLE PROBLEMS
LED composite light faulty.
Rear junction box faulty.
Wire 1008/21-29 faulty.
Go to Step 5 of this
NO
Fault.
YES
Replace LED
composite light
(Para 4-29). Verify
repair, go to Step 10
of this Fault.
4-58.2
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