Diagnostic Instructions
| • | 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. |
Circuit/System Description
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.
Diagnostic Aids
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.
Reference Information
Schematic Reference
Connector End View Reference
Description and Operation
Instrument Cluster Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
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. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for IPC replacement, setup, and programming
