Cruise Control Does Not Disengage With Brake Pedal
- Perform On-Board Diagnostic (OBD) System Check. See appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. If On-Board Diagnostic (OBD) System Check has been performed, go to next step.
- Turn ignition switch to OFF position. Disconnect cruise control servo harness connector. Turn ignition switch to ON position. Connect test light between ground and cruise control servo harness connector terminal No. 6 (Yellow/Green wire). See Figure and CRUISE CONTROL SERVO CONNECTOR TERMINAL IDENTIFICATION table. Observe test light while depressing and releasing brake pedal. Test light should not illuminate when brake pedal is depressed. Test light should illuminate when brake pedal is released. If results are as specified, go to next step. If results are not as specified, go to step 4 .
- Ensure ignition switch is in ON position. Connect test light between ground and cruise control servo harness connector terminal No. 2 (Green/White wire). Observe test light while depressing and releasing brake pedal. Test light should not illuminate when brake pedal is released. Test light should illuminate when brake pedal is depressed. If results are as specified, go to step 6 . If results are not as specified, go to next step.
- Check brakelight switch adjustment. See BRAKELIGHT SWITCH under ADJUSTMENTS. Adjust brakelight switch as necessary. Retest operation. If brakelight switch adjustment is okay, go to next step.
- Repair open or short to voltage in brakelight switch wiring. See WIRING DIAGRAMS . Retest operation.
- Replace cruise control servo. See CRUISE CONTROL SERVO under REMOVAL & INSTALLATION.