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Page Title:
STOPLIGHT(S) DO NOT OPERATE. (Cont) |
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 TM 9-2330-385-14
5. STOPLIGHT(S) DO NOT OPERATE (CONT).
4.
KNOWN INFO
TEST OPTIONS
WARNING
Read WARNING
Truck electrical system OK.
Continuity test.
on Page 4-171
All other lights on trailer
operate.
REASON FOR QUESTION
Stoplight lamp OK.
Is continuity measured on
If continuity is not measured on
center contact of stoplight
POSSIBLE PROBLEMS
center contact at connector,
socket and connector?
voltage cannot be supplied to
Composite light faulty.
light lamp.
12 vdc cable faulty.
Connector MC16 faulty.
Front junction box faulty.
Wire 1003-17 faulty.
Rear junction box faulty.
Wire 1003/22-30 faulty.
Replace rear
composite light
NO
Verify repair, go to
Step 10 of this Fault.
YES
5.
KNOWN INFO
TEST OPTIONS
WARNING
Read WARNING
Truck electrical system OK.
Voltage test.
on Page 4-171
All other lights on trailer
operate.
REASON FOR QUESTION
Stoplight lamp OK.
Are 10 to 14 vdc measured at
Composite light OK.
If 10 to 14 vdc are not present at
LED composite light OK.
pins C and A on trailer end of
12 vdc cable, terminal C,
Ground wire 1435 OK.
12 vdc cable?
stoplight will not operate.
POSSIBLE PROBLEMS
12 vdc cable faulty.
Connector MC16 faulty.
Front junction box faulty.
Wire 1003-17 faulty.
Rear junction box faulty.
Replace 12 vdc cable.
NO
Wire 1003/22-30 faulty.
Verify repair, go to
Step 10 of this Fault.
YES
4-170
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