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Detroit DD15 GHG14 (2014-16) Fault Code: SPN 1663 FMI 7 (MCM, CPC, ACM) Optimized Idle Safety Loop Faulted

DESCRIPTION:
Optimized idle safety loop faulted.

MONITORED PARAMETER:
Optimized idle safety loop (parking brake, hood tilt switch, neutral safety switch and vehicle speed).

TYPICAL ENABLING CONDITIONS:
Fault is set active is a maximum number of vehicle speed sensor pulses during and optimized idle engine start is exceeded or the vehicle speed is above 0.25 km/h or the engine torque is above a calibrated threshold for 2 seconds.

MONITOR SEQUENCE:
None

DASH LAMPS:
CEL

ENGINE REACTION:
None

VERIFICATION:
Run an optimized idle mode.

NOTE: Vehicle speed sensor failure.

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