Preliminary Inspection
- PCM will disable cruise control if any of the following conditions are detected:
- Vehicle speed is less than 25 MPH.
- Transaxle is in Park, Neutral, Low or Reverse.
- An excessive over/under battery voltage condition exists.
- Engine speed is too high.
- Vehicle speed is too high.
- Diagnostic Trouble Codes (DTCs) are set.
- Check fuses, and replace as necessary. Visually inspect for broken or open wires. Check for a broken or partially broken wire inside insulation which could cause system malfunction but prove good in a continuity/voltage check with system disconnected.
- Check for DTCs. If any DTCs are present, see appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE.
- Ensure cruise control module linkage is connected and moving freely and is not binding. Check cruise control cable adjustment. See CRUISE CONTROL CABLE under ADJUSTMENTS. Ensure brakelight switch is installed correctly. See CRUISE CONTROL RELEASE & BRAKELIGHT SWITCHES under ADJUSTMENTS. Ensure center high mount brakelight is operating.
- Ensure any aftermarket electronic equipment is properly installed. Repair as necessary. If no problem is found, go to DIAGNOSTIC CHECK .