DESCRIPTION:
Injector needle control valve cylinder 1, 2, 3 shorted to ground.

MONITORED PARAMETER:
Injector needle control valve cylinder 1, 2, 3.

TYPICAL ENABLING CONDITIONS:
Engine rpm = Idle or higher.

MONITOR SEQUENCE:
None

EXECUTION FREQUENCY:
Continuous when enabling conditions met.

TYPICAL DURATION:
Two seconds

DASH LAMPS:
1. MIL
2. CEL

ENGINE REACTION:
Derate 25%

VERIFICATION:
Engine Idle: One minute.

PROBABLE CAUSES:
1. Injector 1, 2, or 3.
2. Short to ground between pin 25 of the 120-pin ECM connection and pin 1 of the front fuel injector harness (14-pin) connector.
3. Failed MCM (Engine ECM).