Servo Actuation Test
- With cruise control module connector plugged in, disconnect servo harness connector. Start and run engine for one minute and shut off. Using a fused jumper wire, connect terminal "C" of servo to ground. See Figure . Using fused jumper wires, connect battery voltage to terminals "A" and "E" of servo.
- If servo pulls throttle cable in and holds it, go to next step. If servo does not pull and hold throttle cable, check vacuum lines for leaks or restrictions. Check vacuum source and check valve (near master cylinder). If check valve and vacuum lines are okay, replace servo.
- Tap brake pedal. If servo releases throttle cable, go to next step. If servo does not release throttle cable, check vacuum line-to-vacuum release switch for kinks or restrictions. If vacuum line is okay, replace vacuum release switch (near stoplight switch).
- Disconnect jumper wire from servo terminal "C". Refer to Fig. Figure . Start engine for one minute and shut off. Reconnect jumper wire between ground and servo terminal "C". After servo pulls throttle cable, disconnect jumper wire from servo terminal "A".
- If servo does not release throttle cable, replace servo. If servo releases throttle cable, replace cruise control module.