For 1990-2009 cars only
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
This diagnostic procedure applies to serial data gages located in the instrument panel cluster (IPC) which include the speedometer, tachometer, engine coolant temperature gage and volt gage if equipped.
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
Important: If the suspect gage is the speedometer, the drive wheels of the vehicle must be raised and the transmission must be placed in drive or first gear.
- Ignition ON, perform the IPC gage sweep test with the scan tool. Verify that all the gages sweep from their low to high position.
- Engine ON, transmission in drive or first gear, verify the scan tool Vehicle Speed parameter matches the speedometer display.
| ⇒ | If any of the gages do not sweep from their low to high position, replace the IPC. |
| ⇒ | If the Vehicle Speed parameter does not match the speedometer display, test or replace the IPC. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for the IPC replacement, setup, and programming
