Check the cooling system coolant level.

Is the coolant in the reservoir at the proper level?

	▶ Go to next step as below.
	▶ Repair or add engine coolant as necessary and go to "Verification of Vehicle Repair" procedure.

Check if the thermostat bypass valve is stuck in the open position or if the correct type of thermostat was installed. Replace thermostat as necessary and go to "Verification of Vehicle Repair" procedure.

Check the valve opening temperature of the thermostat.

If the opening temperature is not as specified, Replace thermostat as necessary and go to "Verification of Vehicle Repair" procedure.If OK, go to next step as below.