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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).
6.
KNOWN INFO
TEST OPTIONS
WARNING
Read WARNING
Truck electrical system OK.
Voltage test.
on Page 4-173
All other lights on trailer
operate.
REASON FOR QUESTION
Stoplight lamp OK.
Composite light OK.
Are 10 to 14 vdc present on
If 10 to 14 vdc are not present
LED composite light OK.
at front junction box, terminal 5,
wire 1003-5 at front junction
Ground wire 1435 OK.
stoplight will not
box, terminal 5?
12 vdc cable OK.
operate.
POSSIBLE PROBLEMS
Connector MC16 faulty.
Front junction box faulty.
Wire 1003-17 faulty.
Replace connector
Rear junction box faulty.
MC16 (Para 4-30).
Wire 1003/22-30 faulty.
NO
Verify repair, go to
Step 10 of this Fault.
YES
7.
KNOWN INFO
TEST OPTIONS
WARNING
Read WARNING
Truck electrical system OK.
Voltage test.
on Page 4-173
All other lights on trailer
operate.
REASON FOR QUESTION
Stoplight lamp OK.
Are 10 to 14 vdc measured on
Composite light OK.
If 10 to 14 vdc are not present at
front junction box,
LED composite light OK.
front junction box, terminal 17,
terminal 17?
Ground wire 1435 OK.
stoplight will not operate.
12 vdc cable OK.
Connector MC16 OK.
POSSIBLE PROBLEMS
Front junction box faulty.
Wire 1003-17 faulty.
Replace front junction
Rear junction box faulty.
box (Para 4-25).
Wire 1003/22-30 faulty.
NO
Verify repair, go to
Step 10 of this Fault.
YES
4-172
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