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
The instrument panel cluster (IPC) displays the engine coolant temperature as determined by the engine control module (ECM). The ECM sends the temperature data via the CAN serial data circuit to the body control module (BCM). The BCM sends the CAN message to the IPC in order to control the engine temperature gage and display the engine temperature.
Reference Information
Schematic Reference
Connector End View Reference
Displays and Gages Connector End Views
Description and Operation
Instrument Cluster Description and Operation
Electrical Information Reference
Scan Tool Reference
Circuit/System Verification
- Verify that the following DTCs are not set: U0100, U0155, U2105, P0117.
- Perform the Coolant Gage Sweep test. The engine coolant gage should sweep from the minimum to maximum positions.
| ⇒ | If any of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle |
| ⇒ | If the gage does not sweep properly, replace the IPC. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the repair.
Control Module References for instrument panel cluster replacement, setup, and programming
