Step | Action | YES | NO |
---|---|---|---|
1 |
MIL flashing pattern check
1)
With the ignition switch ON position, check MIL flashing pattern.
Does MIL flashing pattern indicate DTC (diagnostic trouble code)?
|
Go to Step 2.
|
|
2 |
Diagnosis switch terminal check
1)
With the ignition switch ON position, check voltage between “E114-13” terminal of ECM coupler and ground.
Is voltage 4 – 5 V?
|
Substitute a known-good ECM and recheck.
|
“WHT/BLU” wire (diagnosis switch terminal) shorted to ground circuit. If OK, substitute a known-good ECM and recheck.
|