Preliminary Checks

Perform these checks as the first step in diagnosing any cruise control complaint. If preliminary checks prove satisfactory, proceed to SYSTEM DIAGNOSIS for further testing.
1. Road test vehicle for system operation and verify complaint.
2. Inspect vacuum hoses and fittings. Repair all loose connections, damaged fittings or hoses and kinked, plugged or improperly routed hoses.
3. Inspect wiring harness, connectors and grounds. Repair loose or improper connections and damaged wiring or connectors.
4. Inspect servo and throttle linkage for binding or sticking, and repair as needed. Ensure linkages are properly adjusted.
5. Recheck system operation.