Detroit DD15 EPA07 (2007-09) 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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Allison Transmission – WTEC 2 MD/HD/B SERIES TRANSMISSIONS
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