Cruise Control Servo: Testing and Inspection

Fig. 11 Cruise Control Servo Connector Terminal Identification (Part 1 Of 2).:

Fig. 11 Cruise Control Servo Connector Terminal Identification (Part 2 Of 2).:

1. With ignition key in the Off position, pull wiring harness terminals from connector, Fig. 11, by unlocking terminal lock in connector.
2. Disconnect cruise control servo electrical connector.
3. Check for continuity between terminals 1 and 3, Fig. 11.
4. Resistance of clutch coil should read 12-18 ohms.

Fig. 12 Servo Terminals 1, 2, 3, & 4 Location.:

5. Connect terminals 2 and 3 to battery positive and terminals 1 and 4 to ground, Fig. 12.
6. Ensure motor pulls cable actuating lever to the fully open position.
7. Disconnect probe from terminal 3, cable should return quickly, allowing servo lever to return to fully closed position.
8. Connect battery positive to terminal 3 and battery ground to terminal 1.
9. Ensure clutch operation maintains servo cable position at this time.

Fig. 13 Cruise Control Servo Fully Closed Position.:

10. With servo lever pulled by hand to its fully open position, Fig. 13, connect terminal 3 and 4 to battery positive and terminals 1 and 2 to battery ground.
11. Motor should release the cable and servo lever should return to fully the closed position.
12. If system fails to operate as described, replace servo.