Troubleshooting Hints

IMPORTANT:
^ The Powertrain Control Module (PCM) will "Inhibit" Cruise Control when there is a malfunction in any of the Cruise Control Inhibit Criteria. The PCM will "Inhibit" Cruise Control when:

- When Vehicle Speed Sensor (VSS) is less than 25 mph.
- When "PARK," "REVERSE," "NEUTRAL" or "1st GEAR" is indicated by the Transaxle Range Switch.
- When an over/under battery voltage condition exists.
- With low Engine rpm.
- With high Engine RPM (fuel cut-off).

1. Check all cruise control inhibit criteria.

2. Check for Diagnostic Trouble Codes (DTCs). Refer to Powertrain Management/Computer and Control Systems/System Diagnosis/Diagnostic Charts. Testing and Inspection

3. Check that Cruise Control Module Linkage is connected and moving freely.

4. Check Cruise Cable Adjustment.

5. Check Brake Switch for proper adjustment/alignment.

^ Make sure that Center High Mounted Stop (CHMS) lamp is working. If inoperative, Cruise Module will be disabled.

^ Check for a broken (or partially broken) wire inside of the insulation which could cause system malfunction but prove "GOOD" in a continuity/voltage check with a system disconnected. These circuits may be intermittent or resistive when loaded, and if possible, should be checked by monitoring for a voltage drop with the system operational (under load).

^ Check for proper installation of aftermarket electronic equipment which may affect the integrity of other systems.