Diagnostic Instructions
Circuit/System Description
The instrument panel cluster (IPC) illuminates the TEMP indicator when the engine control module (ECM) determines that the coolant temperature is more than 128°C (262°F). The IPC receives a discrete input from the ECM requesting illumination.
The IPC illuminates the TEMP indicator during the display test at the start of each ignition cycle.
Reference Information
Schematic Reference
Connector End View Reference
Description and Operation
Electrical Information Reference
Scan Tool Reference
Circuit/System Testing
With the engine running within the normal operating temperature range, the engine coolant temperature (ECT) indicator should not be illuminated.
⇒ | If the engine coolant is not within the normal operating range, repair the overheating condition. |
⇒ | If the engine coolant is within the normal operating range, 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