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Page Title:
STOPLIGHT(S) DO NOT OPERATE (S/N YB6122 075 AND UP). (Cont) |
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 TM 9-2330-385-14
15. STOPLIGHT(S) DO NOT OPERATE (S/N YB6122 075 AND UP) (CONT).
2.
KNOWN INFO
TEST OPTIONS
WARNING
Read WARNING
Voltage test.
Truck electrical system OK.
All other lights on trailer
operate.
REASON FOR QUESTION
Taillights operate indicating
Are 10 to 14 vdc measured
LED composite light ground
If 10 to 14 vdc are not present
between terminals C and A on
(wire 1435) OK.
at 12 vdc cable, between
LED composite light OK.
trailer end of 12 vdc cable?
terminals C and terminal A,
stoplights will not operate.
POSSIBLE PROBLEMS
12 vdc cable faulty.
Repair (Para 4-31) or
Wire 1003C faulty.
replace 12 vdc cable
Wire 1003C/22 faulty.
NO
(Para 2-9). Verify
Wire 1003C-5 faulty.
repair, go to Step 6 of
Diode assembly faulty.
this Fault.
YES
4-202.34
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