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Page Title:
CEL FLASHES A VALID ACTIVE CODE. |
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 TM 9-2320-364-20-1
2-13. DDEC II TROUBLESHOOTING (CONT).
D3 CEL FLASHES A VALID ACTIVE CODE.
INITIAL SETUP
Tools and Special Tools
Equipment Condition
Tool Kit, General Mechanic's: Automotive
Engine OFF, (TM 9-2320-364-10)
(Item 74, Appendix G)
Parking brake applied, (TM 9-2320-364-10)
STE/ICE-R (optional) (Item 3, Appendix G)
Wheels chocked, (TM 9-2320-364-10)
DDEC Repair Kit (Item 15, Appendix G)
Top engine access cover opened,
Multimeter (Item 44, Appendix G)
(TM 9-2320-364-10)
Reader, Diagnostic (Item 53, Appendix G)
Jumperwire
References
TM 9-2320-364-10
TM 9-4910-571-12&P
START
1.
KNOWN INFO
TEST OPTIONS
WARNING
Read WARNING
Resistance test.
CHECK ENGINE light (CEL)
on Page 2-453
STE/ICE-R #91.
flashes a valid active code.
POSSIBLE PROBLEMS
REASON FOR QUESTION
Are there more than 200 ohms
If there are 200 ohms or less at
Short in diagnostic request wire
measured between wires 435
DDL connector MC13, the
435 or 451.
and 451 at DDL connector
diagnostic request line
Open in data wire 901 or 900.
MC13, terminals A and M?
wire 451 or 435 is shorted to
Short in data wire 901 or 900.
ground.
Damaged DDEC ECM terminals
or connectors.
Repair wires 435
and/or 451 (see
schematic Fig 2-2)
NO
or notify DS
Maintenance.
Verify repair, go to
Step 5 of this Fault.
YES
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