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Page Title:
REAR MARKER LIGHT(S) DO NOT OPERATE. (Cont) |
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 TM 9-2330-385-14
3. REAR MARKER LIGHT(S) DO NOT OPERATE (CONT).
4.
KNOWN INFO
TEST OPTIONS
WARNING
Read WARNING
Truck electrical system OK.
Continuity test.
on Page 4-145
All other trailer lights operate.
Light lamp OK.
REASON FOR QUESTION
Wire 1012-31 OK.
Is continuity measured on
If rear marker light ground is
ground side of marker light
POSSIBLE PROBLEMS
faulty, light will not operate.
socket and a known good
ground?
Marker light faulty.
Replace rear marker
light (Para 4-28).
NO
Verify repair, go to
Step 7 of this Fault.
YES
Fault not corrected.
Notify supervisor.
5.
KNOWN INFO
TEST OPTIONS
WARNING
Read WARNING
Truck electrical system OK.
Continuity test.
on Page 4-145
All other trailer lights operate.
Light lamp OK.
REASON FOR QUESTION
Ground side of marker light OK.
Is continuity measured on
If continuity is not measured on
center contact of marker light
POSSIBLE PROBLEMS
center contact, voltage cannot
socket and connector?
be supplied to lamp and light will
Marker light faulty.
not operate.
Wire 1012-31 faulty.
Replace rear marker
light (Para 4-28).
NO
Verify repair go to
Step 7 of this Fault.
YES
4-144
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