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Page Title:
FRONT SIDE MARKER LIGHT DOES NOT OPERATE. |
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 TM 9-2330-385-14
4-13. 24 VOLT ELECTRICAL SYSTEM TROUBLESHOOTING PROCEDURES (CONT).
1. FRONT SIDE MARKER LIGHT DOES NOT OPERATE.
INITIAL SETUP
Tools and Special Tools
References
Tool Kit, General Mechanic's: Automotive
TM 9-2320-364-10
(Item 50, Appendix J)
Multimeter (Item 28, Appendix J)
Equipment Condition
Engine OFF, (TM 9-2320-364-10)
Personnel Required
24 vdc cable assembly connected to truck,
Two
Parking brake applied, (TM 9-2320-364-10)
Wheels chocked, (TM 9-2320-364-10)
NOTE
The following troubleshooting procedures cover the left front side marker light, but they apply to both front side
D
marker lights.
All electrical wires and components listed in this troubleshooting procedure are illustrated and located in FO-1.
D
START
1.
KNOWN INFO
TEST OPTIONS
WARNING
Read WARNING
Truck electrical system OK.
Continuity test.
on Page 4-27
All other trailer lights operate.
REASON FOR QUESTION
POSSIBLE PROBLEMS
If light lamp filament is faulty,
Is continuity measured across
lamp will not operate.
Light lamp faulty.
marker light lamp?
Wire 1435-23 faulty.
Front marker light faulty.
Front junction box faulty.
Wire 1012-24 faulty.
Replace front marker
light lamp (Para 4-27).
NO
Verify repair, go to
Step 6 of this Fault.
YES
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