Volt Gage Inaccurate or Inoperative

Volt Gage Inaccurate or 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) displays the vehicle voltage based on the information from the body control module (BCM). The BCM provides voltage information to the IPC via class 2 serial data.

Circuit/System Testing

Ignition ON, perform the volt gage sweep test with the scan tool.

If the volt coolant 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. Verification Tests

Control Module References for IPC replacement, setup, and programming