Inspection and Verification (Start Here)

1. Visually inspect for obvious signs of electrical damage. Refer to the following chart:

VISUAL INSPECTION CHART

Electrical
^ Central Junction Box (CJB) Fuse 12 (30 A).
^ Damaged wiring harness
^ Loose or corroded connectors
^ DDM
^ PATS module

2. If the concern remains after inspection, connect the New Generation STAR (NGS) Tester to the Data Link Connector (DLC) located beneath the instrument panel and select the vehicle to be tested from NGS Tester menu. If NGS Tester does not communicate with the vehicle:
^ check that the program card is properly installed.
^ check the connections to the vehicle.
^ check the ignition switch is in RUN position.

If the NGS Tester still will not communicate with the vehicle, refer to Information Bus.

3. Refer to the Symptom Chart. Symptom Chart