Code P1565, Cruise Servo Position: Notes
WARNING: This page is about a different car, the 1994 Pontiac Bonneville, 1994 Oldsmobile Eighty-Eight, and 1994 Buick LeSabre. However, it is still accessible from the selected car via links, so may be relevant.
PCM applies and monitors 5 volts to cruise control servo position sensor through PCM servo position sensor terminal and receives a returned frequency from servo terminal "B" on the same circuit. Depending on actual servo position, AC frequency will vary indicating to PCM position of servo blade. PCM uses this information to control servo position when cruise is engaged. Code P1565 will set when the following conditions are present.
- Servo position signal circuit is open, grounded or shorted to voltage.
Or
- Ground circuit (low) is open.
When Code P1565 is set, PCM will not allow cruise control operation. P1565 does not illuminate the Malfunction Indicator Light (Mil).