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TM 10-3930-669-20
2-14. ELECTRICAL SYSTEM TROUBLESHOOTING (CONT).
3. FUEL GAUGE GIVES NO OR INCORRECT READING.
INITIAL SETUP
Tools and Special Tools
Tool Kit, General Mechanic's: Automotive
(Item 1, Appendix B)
Multimeter (Item 2, Appendix B)
STE/ICE-R (Optional) (Item 14, Appendix B)
Jumper Wire
References
TM 10-3930-669-10
Equipment Condition
Engine OFF (TM 10-3930-669-10)
MAIN POWER switch OFF (TM 10-3930-669-10)
Parking brake applied (TM 10-3930-669-10)
Wheels chocked (TM 10-3930-669-10)
KNOWN INFO
Fuel Tank is full.
POSSIBLE PROBLEMS
Fuel level sensor faulty.
Gauge wire 5 faulty.
Gauge ground wire faulty.
Wire 18 faulty.
Fuel level gauge faulty.
TEST OPTIONS
Gauge operation test.
REASON FOR QUESTION
If suspect gauge reads at full
scale, sensor is faulty.
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2-138
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