Detroit DD16 GHG14 (2014-16) Fault Code: SPN 2797 FMI 4 (MCM) Fuel Injector Needle Control Valve Cylinder 1, 2, 3 Shorted to Ground
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.
NOTE: Remove rocker cover and disconnect 1 injector at a time. Measure resistance between pin #3 of injector and ground. If more than 3 ohms, replace the injector.
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).
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