Chime Malfunction

Chime Malfunction

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Initial Inspection and Diagnostic Overview
* Review Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions provides an overview of each diagnostic category.

Circuit/System Description

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).

Circuit/System Testing

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

^ If not Inactive, test the headlamp input signal circuit for an open or short to voltage. If the circuit tests normal, replace the headlamp switch.

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

^ If not Inactive, test the parklamp signal circuit for an open or short to voltage. If the circuit tests normal, replace the headlamp switch.

3. 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 signal circuit for an open or short to voltage. If the circuit tests normal, replace the ignition switch.

4. Ignition ON, doors closed, verify the scan tool Door Ajar Switch parameters are Inactive.

^ If not Inactive, refer to Courtesy Lamps Malfunction. Courtesy Lamps Malfunction

5. Ignition ON, rear gate closed, verify the scan tool Liftgate Ajar Switch parameter and the Liftglass Ajar Switch parameter are Closed.

^ If not Closed, refer to Courtesy Lamps Malfunction. Courtesy Lamps Malfunction

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

Chime Inoperative
1. Ignition OFF, key in the ignition, open the driver door. The courtesy lamps should illuminate.

^ If the courtesy lamps do not illuminate, refer to Courtesy Lamps Malfunction. Courtesy Lamps Malfunction

2. Ignition ON, radio ON, adjust the radio balance and fade to the left front speaker.

^ If the speaker does not operate properly, refer to Speaker Malfunction. Speaker Malfunction

3. If the speaker operates properly, replace the radio.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Verification Tests

* Ignition and Start Switch Replacement
* Turn Signal Multifunction Switch Replacement