Servo Vacuum
- Remove cruise control cable from throttle body. Disconnect cruise control servo 4-pin connector. Disconnect vacuum hose at cruise control servo. Apply battery voltage to servo connector terminal No. 2 (Dark Blue/Red wire). Using jumper wires, ground remaining 3 terminals of servo connector.
- Connect hand-held vacuum pump to servo vacuum nipple, and apply 10-15 in. Hg of vacuum. Cruise control cable should retract and maintain position as long as vacuum is applied. If servo does not test as specified, replace servo.