The instrument panel cluster (IPC) generates the audible warning through an acoustic chime generator in the IPC. The IPC 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 for scan tool information

Important: Before performing this diagnostics, make sure no indicators are illuminated after the IPC performs a lamp test. If any indicators are illuminated after the bulb test, perform the indicator diagnostics before this diagnostics.

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, doors closed, verify the scan tool All Door Lock Command is On.

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

3. Verify that the Key In Ignition Cylinder Switch parameter is YES when the key is in the ignition and NO when the key is out of the ignition.

⇒	If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the ignition switch.

4. If all circuits test normal, test or replace the IPC.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.