Troubleshooting Hints

PERFORM BEFORE BEGINNING SYSTEM DIAGNOSIS
^ 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:
^ The engine is "off."
^ An automatic transaxle is in "PARK" or "NEUTRAL."
^ A manual transaxle is out of gear (in "NEUTRAL")
^ There is high engine RPM (fuel cut-off).
^ There is high vehicle speed (fuel cut-off).
^ The ETS (Enhanced Traction System) is active.
^ The PCM sets certain DTC's or other failure records. Refer to Engine Controls Diagnostic System Check.
1. Check all cruise control inhibit criteria.
2. Check for Diagnostic Trouble Codes (DTCs). Refer to Engine Controls. Powertrain Management
3. Check that the Cruise Control Module Linkage is connected and moving freely.
4. Check Cruise Control Cable adjustment.
5. Check Brake Switch for proper adjustment/alignment. Make sure that High Mounted Stoplamp (HMSL) is working. If inoperative, the Cruise Control Module will be disabled.
^ Check for a broken (or partially broken) wire inside of the insulation which could cause system failure but prove "GOOD" in a continuity/voltage check (refer to Troubleshooting Procedures).
^ Check for proper installation of aftermarket electronic equipment which may effect the integrity of other systems (refer to Troubleshooting Procedures). Diagnostic Aids
^ Refer to System Diagnosis.