Cruise Control Servo: Testing and Inspection

1. Inspect power distribution center fuse F13; if satisfactory, place ignition switch in On position and ensure battery voltage exists at F13. Replace fuse or repair open ignition switch circuit as necessary.
2. Place ignition and speed control switches in On position, then connect negative lead of suitable voltmeter to chassis ground.

Fig. 72 Servo Harness Connector:

3. Disconnect servo 4-way connector then ensure approximate battery voltage exists at pin 2. If not, repair poor connections or adjust brake switch as necessary.
4. Connect a suitable jumper wire between pin 2 of servo connector and pin 2 of servo, then ensure approximate battery voltage exists at remaining three pins. If not, replace servo.
5. Place ignition switch in Off position, then connect one lead of a suitable ohmmeter to body ground and touch other lead to pin 1 of servo connector. If continuity is not indicated, repair ground circuit as necessary.