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TM 10-3930-669-20
2-14. ELECTRICAL SYSTEM TROUBLESHOOTING (CONT).
25. ENGINE STARTS WITH TRANSMISSION ENGAGED.
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
24 vdc circuits operate.
POSSIBLE PROBLEMS
Wire 33 faulty.
Diode module DM1 faulty.
Wire 39 or wire 40 faulty.
Diode module DM2 faulty.
Wire 41 faulty.
Relay R3 ground wire faulty.
Relay R3 faulty.
TEST OPTIONS
Operation test.
REASON FOR QUESTION
This question eliminates a
possible problem or group of
possible problems determining
where troubleshooting
continues.
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2-274
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