Connect scantool with diagnostic connector.

Check that there is DTC on the Engine side.

Check Engine first if there is any DTC on the engine side and confirm that it is erasable.

If no DTC, Select "Engine coolant temperature sensor" parameter on the Current data with scantool.

Check that the value of engine coolant temperature is changable according to engine temperature change.

Is the engine coolant temperature sensor normal ?

	▶ Go to Next procedure.
	▶ Check engine coolant temperature sensor, circuit, or related component. Repair or replace as necessary and then, go to "Verification of Vehicle Repair" procedure.