Circuit/System Testing

IMPORTANT: When removing connectors inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected component/connector.

The information center telltale assembly indicator (front)
The information center telltale assembly indicator (rear)
The front and rear object alarm module
The front information center telltale assembly indicator wiring harness connector
The rear information center telltale assembly indicator wiring harness connector
The front and rear object alarm module wiring harness connector

Ignition ON, use the scan tool and perform the LED Test in Special Functions. The scan tool will command each indicator to turn ON then proceed to the next one. Verify that both front and rear information center telltale indicators turns ON.
- If none of the front or rear information center telltale indicators turn ON refer to Information Center Telltale Malfunction .
Remove the front and rear object alarm module connector. Refer to object alarm module replacement in Repair Instructions for connector location.
The front information center telltale indicator does not turn ON then ground each indicator control circuit on the front and rear object alarm module connector. Verify each indicator on the front information center telltale turns ON.
- If one or all the indicators on the front information center telltale does turn ON then test all indicator control circuits between information center telltale assembly indicator connector and the front and rear object alarm module for a short to voltage or an open.
- If all circuits test normal then replace the front information center telltale display.
The rear information center telltale does turn ON then remove the rear information center telltale. Refer to information center telltale assembly replacement (rear) in Repair Instructions for connector location.
Test all the indicator circuits between information center telltale assembly indicator connector and the front and rear object alarm module for a short to voltage or an open. Verify that a short to voltage or an open does not exist.
- If any of the above conditions are found make the appropriate repair.
Reconnect the front and rear object alarm module connector.
Ignition ON, connect a test lamp between the telltale assembly supply voltage circuit and each indicator control circuit on the rear information center telltale indicator connector one at a time. With the scan tool perform the LED Test. Verify that each indicator illuminate the test lamp.
- If the test lamp does not illuminate replace the front and rear object alarm module.
Each indicator illuminate the test lamp then replace the information center telltale assembly replacement (rear). After replacement refer to Repair Verification.