The instrument panel cluster (IPC) generates the audible warning through an internal speaker in the IPC. The IPC receives audible warning requests via serial data messages from the body control module (BCM) to activate a chime for various vehicle features. After the IPC receives the chime request, the IPC sends a serial data message to the BCM confirming the activation of the requested chime.

Schematic Reference

Connector End View Reference

Electrical Information Reference

Scan Tool Reference

Scan Tool Data List

Important: Before performing this diagnostic, make sure no indicator(s) 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, park lamp switch OFF, verify the scan tool Park Lamps Switch parameter is Off.

⇒	If not Off refer to Symptoms - Lighting Systems .

2. Ignition ON, doors closed, verify the scan tool Lock All Door Feedback parameter is On.

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

3. Ignition OFF, key out of the ignition, verify the scan tool Key In Ignition parameter is No.

⇒	If not No, test the key in ignition switch signal circuit for a short to ground. If the circuits tests normal, replace the ignition switch.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.