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 TM 9-2320-364-20-1
2-13. DDEC II TROUBLESHOOTING (CONT).
D4 CRANE HIGH IDLE NOT WORKING.
INITIAL SETUP
References
Tools and Special Tools
TM 9-2320-364-10
Tool Kit, General Mechanic's: Automotive
TM 9-4910-571-12&P
(Item 74, Appendix G)
STE/ICE-R (optional) (Item 3, Appendix G)
Equipment Condition
DDEC Repair Kit (Item 15, Appendix G)
Engine OFF, (TM 9-2320-364-10)
Multimeter (Item 44, Appendix G)
Parking brake applied, (TM 9-2320-364-10)
Reader, Diagnostic (Item 53, Appendix G)
Wheels chocked, (TM 9-2320-364-10)
Terminal Remover (Item 70, Appendix G)
Top engine access cover opened,
Weatherpac Crimper (Item 76, Appendix G)
(TM 9-2320-364-10)
Jumperwire
START
1.
KNOWN INFO
TEST OPTIONS
DDR test.
Para 2-29, Fault 19
Does throttle position sensor
Troubleshooting completed.
read 0% at idle?
REASON FOR QUESTION
POSSIBLE PROBLEMS
Faulty throttle position sensor
can cause this Fault.
Throttle position sensor faulty.
DDEC ECM faulty.
Damaged DDEC ECM terminals
or connectors.
Open in signal or ground
wire 510/1525 or 952.
Open in +5 volt wire 916.
Short in signal or ground
wire 510/1525 or 952.
Go to Fault A4
Short in +5 volt wire 916.
NO
Code 22, Step 3.
Damaged vernier control
terminals or connectors.
Vernier control faulty.
YES
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