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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).
2.
KNOWN INFO
TEST OPTIONS
WARNING
Read WARNING
CHECK ENGINE light (CEL)
Resistance test.
Are 5
on Page 2-455
flashes a valid active code.
STE/ICE-R #91.
ohms or
No short in diagnostic request
less
wires 435 and 451.
REASON FOR QUESTION
measured between wires 901
and 900 at vehicle harness
POSSIBLE PROBLEMS
Resistance more than 5 ohms at
connector MC18, terminals C2
vehicle harness connector
and C1 with jumperwire
Open in data wire 901 or 900.
indicates open in one or both
installed at DDL connector,
Short in data wire 901 or 900.
data lines wire 901 or 900.
Damaged DDEC ECM terminals
terminals J and K?
or connectors.
Repair wires 901
and/or 900 (see
schematic Fig 2-1)
NO
or notify DS
Maintenance.
Verify repair, go to
Step 5 of this Fault.
YES
3.
KNOWN INFO
TEST OPTIONS
CHECK ENGINE light (CEL)
Resistance test.
flashes a valid active code.
Are 5 ohms or less measured
STE/ICE-R #91.
No short in diagnostic request
between wires 901 and 900 at
wires 435 and 451.
vehicle harness connector
REASON FOR QUESTION
No open in data wires 901
MC18, terminals C2 and C1?
and 900.
Resistance less than 5 ohms at
vehicle harness connector indi-
POSSIBLE PROBLEMS
cates two data lines wire 901
and 900 are shorted together.
Short in data wire 901 or 900.
Damaged DDEC ECM terminals
or connectors.
Go to Step 4 of this
NO
Fault.
YES
Repair wires 901
and/or 900 (see
schematic Fig 2-1)
or notify DS
Maintenance.
Verify repair, go to
Step 5 of this Fault.
2-454
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