Flow of Diagnosis

1. Verify the customer concern by operating the system in question.
2. Visually inspect for obvious signs of electrical damage.

Electrical
^ Damaged wiring harness.
^ Loose or corroded connections.
^ Damaged anti-lock brake control module.
^ Damaged Remote Anti-Theft Personality (RAP) module.
^ Damaged Powertrain Control Module (PCM).

3. if the fault is not visually evident, perform the System Precheck. System Precheck