Self-Test Diagnostics

Self-Test Diagnostics

WARNING: This test is a key on engine off (KOEO) test that is conducted only while parked with the parking brake fully engaged. Failure to follow these instructions may result in personal injury.

1. Run the scan tool speed control self-test. The self-test diagnostics are a key tool in quickly and accurately diagnosing speed control system faults.

1. Use the scan tool to retrieve any diagnostic trouble codes (DTC's) Follow the appropriate diagnostic for any DTCs retrieved.
2. Use the scan tool to confirm the steering wheel switch operation by pressing each button while monitoring the PIDs. If the switches are found to be inoperative, GO to Symptom Chart.