Module Configuration

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

VISUAL INSPECTION CHART
Electrical
^ Damaged wiring harness
^ Loose or corroded connectors
^ GEM
^ HEC

2. If the concern remains after inspection, connect the scan tool to the Data Link Connector (DLC) located beneath the instrument panel and select the vehicle to be tested from scan tool menu.
If the scan tool still does not communicate with the vehicle, Refer to Module Communications Network (Information Bus). Testing and Inspection
3. Refer to the Symptom Chart. Module Configuration