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

Schematic Reference

Connector End View Reference

Electrical Information Reference

Scan Tool Reference

Scan Tool Data List

1. Ignition ON, headlamp switch OFF, verify the scan tool Headlamp Switch parameter is Inactive.

⇒	If not Inactive, refer to Headlamp Low or High Beams Always On .

2. Ignition ON, park lamp switch OFF, verify the scan tool Park Lamp Switch parameter is Inactive.

⇒	If not Inactive, refer to Park, License, and Tail Lamps Always On

3. Ignition ON, close all doors, verify the scan tool Door Ajar Switch parameters are Door Closed.

⇒	If not Door Closed, refer to Courtesy Lamps Always On .

4. Ignition OFF, key out of the ignition, verify the scan tool Key In Ignition Status parameter is Key Out.

⇒	If not Key Out, test the key-in-ignition switch signal circuit terminal 1 for an open or short to voltage. If the circuit tests normal, replace the ignition switch.

5. If all circuits test normal, replace the BCM.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.