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TM 9-2320-364-20-2
2-1390
27. FRONT BLACKOUT CLEARANCE OR MARKER LIGHT DOES NOT OPERATE.
INITIAL SETUP
1.
Go to Step 6 of this
Fault.
START
YES
NO
Parking lights operate indicating
wire 1435 to front composite
lights OK.
Rear blackout clearance lights
operate indicating blackout
marker switch is OK.
Wire 1680 faulty.
Blackout clearance light faulty.
Blackout clearance light lamp
faulty.
Front composite light faulty.
Blackout marker light lamp
faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Visual inspection.
If both blackout marker lights
operate, fault is in front blackout
clearance lights.
2-20. ELECTRICAL SYSTEM TROUBLESHOOTING (CONT).
Tools and Special Tools
Tool Kit, General Mechanic’s: Automotive
(Item 74, Appendix G)
STE/ICE-R (optional) (Item 3, Appendix G)
Multimeter (Item 44, Appendix G)
Equipment Condition
Engine OFF, (TM 9-2320-364-10)
Parking brake applied, (TM 9-2320-364-10)
Wheels chocked, (TM 9-2320-364-10)
References
TM 9-2320-364-10
TM 9-4910-571-12&P
Materials/Parts
Preformed Packing (Item 223, Appendix F)
Do both front blackout marker
lights operate?
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