Circuit Description
WARNING: This page is about a different car, the 1995 Oldsmobile Ninety-Eight and 1995 Buick Park Avenue. 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 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.