Check cooling system coolant level and fill if low.
Check for a proper cooling system operation. Especially check that cooling and condenser fan working normally.
Remove the thermostat and check the following items:
-Stuck or damaged
-Verify the temperature at which the valve begins to open
Valve opening temperature : 80~84°C(176~183.2°F)
Valve opening temperature : 95°C(203°F)
Is a problem found?
YES
▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure.
NO
▶ Go to next step as below.