The radio generates the audible warning through the left front speaker. The radio receives audible warning requests via class 2 serial data from the body control module (BCM).

Schematic Reference

Connector End View Reference

Electrical Information Reference

Scan Tool Reference

Scan Tool Data List

1. Ignition OFF, disconnect the harness connector at the ignition key alarm switch
2. Ignition ON, verify the scan tool Key In Ignition parameter is Inactive.

⇒	If not Inactive, test the key in ignition signal circuit for a short to ground. If the circuit tests normal, replace the BCM.

3. If all circuits test normal, test or replace the ignition switch.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.