Instrument Cluster Gauges Inoperative

Instrument Cluster Gauges Inoperative

Diagnostic Instructions

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

Circuit/System Description

This diagnostic procedure applies to serial data gauges located in the instrument panel cluster (IPC) which includes the speedometer, tachometer, engine coolant temperature gauge and volt gauge (if equipped).

Reference Information
Schematic Reference

* Instrument Cluster Schematics (Instrument Cluster Schematics)
* Engine Controls Schematics ([1][2]Electrical Diagrams)

Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation

* Instrument Cluster Description and Operation (Instrument Cluster)
* Engine Control Module Description (Engine Control Module Description)

Electrical Information Reference

* Circuit Testing (Circuit Testing)
* Connector Repairs (Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (Testing For Intermittent Conditions and Poor Connections)
* Wiring Repairs (Wiring Repairs)

Scan Tool Reference

Control Module References (Programming and Relearning) for scan tool information

Circuit/System Verification

Important: If the suspect gauge is the speedometer, the drive wheels of the vehicle must be raised and the transmission must be placed in drive or first gear.


1. Ignition ON, perform the IPC gauge sweep test with the scan tool. Verify that all the gauges sweep from their low to high position.

• If any of the gauges do not sweep from their low to high position, replace the IPC.

2. Engine ON, transmission in drive or first gear, verify the scan tool Vehicle Speed parameter matches the speedometer display.

• If the Vehicle Speed parameter does not match the speedometer display, test or replace the IPC.

Repair Instructions

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

Control Module References (Programming and Relearning) for the IPC replacement, setup, and programming