The body control module (BCM) generates the audible warning. The BCM receives audible warning requests via serial data.

Schematic Reference

Connector End View Reference

Description and Operation

Electrical Information Reference

Scan Tool Reference

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

⇒	If not Key Out, test the key in ignition signal circuit for a short to voltage. 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.