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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).
7.
KNOWN INFO
TEST OPTIONS
WARNING
Read WARNING
Truck electrical system OK.
Voltage test.
on Page 4-159
All other lights on trailer
operate.
REASON FOR QUESTION
Light lamp OK.
Are 10 to 14 vdc measured at
Composite light OK.
If 10 to 14 vdc are not present at
pins F and A on trailer end of
LED composite light ground
12 vdc cable, pin F, taillights will
wire pigtail OK.
12 vdc cable?
not operate.
LED composite light OK.
POSSIBLE PROBLEMS
12 vdc cable faulty.
Connector MC16 faulty.
Front junction box faulty.
Wire 1008-20 faulty.
Replace 12 vdc cable.
Rear junction box faulty.
NO
Verify repair, go to
Step 12 of this Fault.
YES
8.
KNOWN INFO
TEST OPTIONS
WARNING
Read WARNING
Truck electrical system OK.
Voltage test.
on Page 4-159
All other lights on trailer
operate.
REASON FOR QUESTION
Light lamp OK.
Composite light OK.
Are 10 to 14 vdc present on
If there are not 10 to 14 vdc
LED composite light ground
wire 1008-1 at front junction
present at front junction box,
wire pigtail OK.
box, terminal 1?
terminal 1, taillight will not
LED composite light OK.
operate.
12 vdc cable OK.
POSSIBLE PROBLEMS
Connector MC16 faulty.
Front junction box faulty.
Replace connector
Wire 1008-20 faulty.
MC16 (Para 4-30).
NO
Rear junction box faulty.
Verify repair, go to
Step 12 of this Fault.
YES
4-158
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