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Page Title:
CEL FLASHES A VALID ACTIVE CODE (CONT). |
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 TM 9-2320-364-20-1
D3 CEL FLASHES A VALID ACTIVE CODE (CONT).
4.
KNOWN INFO
TEST OPTIONS
WARNING
Read WARNING
CHECK ENGINE light (CEL)
Visual inspection.
on Page 2-457
flashes a valid active code.
No short in diagnostic request
REASON FOR QUESTION
wires 435 and 451.
Are DDEC ECM terminals and
No open in data wires 901
Damaged terminals or
vehicle harness connector
and 900.
connectors can affect signal to
MC18 (DDEC ECM and
No short in data wires 901
DDEC ECM.
and 900.
harness side) free from
damage?
POSSIBLE PROBLEMS
Damaged DDEC ECM terminals
Repair vehicle
or connectors.
harness connector
MC18 (Para 7-101) or
NO
replace DDEC ECM
(Para 7-56).
Verify repair, go to
Step 5 of this Fault.
YES
Replace DDEC ECM
(Para 7-56).
Verify repair, go to
Step 5 of this Fault.
5.
KNOWN INFO
TEST OPTIONS
CHECK ENGINE light (CEL)
Does CEL stay ON longer
Verify repair.
flashes a valid active code.
than 5 seconds?
No short in diagnostic request
REASON FOR QUESTION
wires 435 and 451.
No open in data wires 901
If CEL lights for approximately
and 900.
five seconds and then goes
No short in data wires 901
OUT after ENGINE switch is
and 900.
turned to ON, Fault has been
DDEC ECM terminals
corrected.
or connectors OK.
POSSIBLE PROBLEMS
Fault corrected.
NO
YES
Go to Fault Index
2-456
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