Chime Inoperative

Chime Inoperative

Diagnostic Fault Information

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Initial Inspection and Diagnostic Overview

Circuit/System Description

The instrument panel cluster (IPC) generates the audible warning through an internal speaker. The IPC receives audible warning requests via GMLAN serial data circuit from the body control module (BCM).

Circuit/System Testing

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, perform the Chime Tone Test in the instrument panel cluster (IPC) Output Controls.

• If the chime does not sound, replace the IPC.

2. Ignition ON, verify that the scan tool Key In Ignition Status parameter is Key In.

• If not Key In, test the signal circuit and ground for a short to voltage or an open/high resistance. If all circuits test normal, replace the ignition switch.

Repair Instructions

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

* Ignition and Start Switch Replacement
* Control Module References for the IPC replacement, setup, and programming.