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Page Title:
REAR SIDE MARKER LIGHT(S) DO NOT OPERATE. (Cont) |
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 TM 9-2330-385-14
2. REAR SIDE MARKER LIGHT(S) DO NOT OPERATE (CONT).
2.
KNOWN INFO
TEST OPTIONS
WARNING
Read WARNING
Voltage test.
Truck electrical system OK.
on Page 4-135
All other trailer lights operate.
Light lamp is OK.
REASON FOR QUESTION
Are 10 to 14 vdc measured at
If voltage is not supplied to
POSSIBLE PROBLEMS
center contact of marker
center contact of marker light,
light?
lamp will not operate.
Marker light faulty.
Wire 1012-26 faulty.
Go to Step 4 of this
NO
Fault.
YES
3.
KNOWN INFO
TEST OPTIONS
WARNING
Read WARNING
Truck electrical system OK.
Continuity test.
on Page 4-135
All other trailer lights operate.
Light lamp OK.
REASON FOR QUESTION
Wire 1012-26 faulty.
Is continuity measured on
If rear side marker light ground
ground side of marker light
POSSIBLE PROBLEMS
is faulty, light will not operate.
socket and a known good
ground?
Marker light faulty.
Replace rear side
marker light
NO
Verify repair, go to
Step 6 of this Fault.
YES
Fault not corrected.
Notify supevisor.
4-134
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