Engine Coolant Temperature (ECT) Meter Symptom Diagnosis

ENGINE COOLANT TEMPERATURE (ECT) METER SYMPTOM DIAGNOSIS

Condition	Possible Cause	Action
Engine coolant temperature (ECT) meter shows no operation or incorrect operation	Circuit fuse blown	Replace fuse and check for short circuit .
	Data (information) cannot be received by CAN communication	Check ECM for DTC referring to DTC CHECK .
	ECT sensor faulty	Check ECT sensor referring to ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION .
	Wiring or ground faulty	Repair circuit .
	Combination meter faulty	Replace combination meter .
	ECM faulty	Replace after making sure that none of above parts is faulty .