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Home >> Cadillac >> 1991 >> Seville Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Diagnostic Tests >> Pcm Code EO99, Cruise Servo Applied Not In Cruise >> Action:

Pcm Code EO99, Cruise Servo Applied Not In Cruise: Action:

PCM turns on SERVICE ENGINE SOON light 16 seconds, disables cruise control and reduces fuel delivery to selected cylinders.

This test monitors the cruise control servo position sensor to ensure that servo has released the throttle after cruise control has been disengaged.

Fig 1: PCM Code EO99, Schematic, Cruise Servo Applied Not In Cruise
G91C07601
Fig 2: Flow Chart, PCM Code EO99, Cruise Servo Applied Not In Cruise
GB0022566