Engine Temp Messages

Symptom:
ENGINE TEMP MESSAGE

When Monitored: Valid Engine Temp CAN message received at least once and CAN Bus Circuit error, Engine CAN Message Missing and Engine CAN Messages Incorrect are not active.

Set Condition: Engine coolant temperature signal is not valid - indicates possible coolant temperature sensor error.

Test 1:

Test 2-4:

POSSIBLE CAUSES
- CAN BUS CIRCUIT DTC PRESENT
- ENGINE DTCs PRESENT
- ECM- ENGINE TEMP MESSAGE
- TCM - ENGINE TEMP MESSAGE