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TM 9-2320-364-20-2
2-1132
1. ALL 12 AND 24 VDC CIRCUITS DO NOT OPERATE.
INITIAL SETUP
1.
Replace batteries
(Para 7-88).
Verify repair, go to
Step 6 of this Fault.
START
YES
NO
Nothing.
Batteries faulty.
Isolator faulty.
Wire 1431 between battery
No. 1 and isolator faulty.
Wire 1431 between isolator
and ENGINE switch faulty.
ENGINE switch faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Resistance test.
STE/ICE-R #73 and 75.
If batteries are faulty, none of
the 12 and 24 vdc circuits will
operate.
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)
Remover, connector (Item 55, 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)
Top engine access cover open,
(TM 9-2320-364-10)
References
TM 9-2320-364-10
TM 9-4910-571-12&P
Do batteries pass load test?
WARNING
Read WARNING
on Page 2-1133
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