• | 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. |
The instrument panel cluster (IPC) illuminates the engine coolant temperature indicator when the powertrain control module (PCM)/engine control module (ECM) determines that the coolant temperature is more than 128°C (262°F). The IPC receives a serial data message from the PCM/ECM requesting the illumination of the engine coolant temperature indicator.
Cooling System Description and Operation
Control Module References for scan tool information
⇒ | If the temperature indicator does not illuminate, replace the IPC. |
⇒ | If not within the specified range, replace the IPC. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for the IPC replacement, setup, and programming