• | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
• | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
• | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
The instrument panel cluster (IPC) displays the vehicle voltage based on voltage information from the body control module (BCM). The BCM provides voltage information to the IPC via the serial data circuit.
The voltmeter may fluctuate between 12 and 14 volts. This is normal operation. For further information, refer to Charging System Description and Operation or refer to Voltmeter Gage under the Instrument Panel section in the owners manual.
Instrument Cluster Description and Operation
Control Module References for scan tool information
Ignition ON, perform the volt gage sweep test with the scan tool. Verify that the volt gage sweeps from its low to high position.
⇒ | If the volt gage does not sweep from its low to high position, replace the IPC. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for IPC replacement, setup, and programming