Inspection [08/2013 - ]: Procedure

HINT: 

The valve opening temperature is inscribed on the thermostat.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Immerse the thermostat in water and then gradually heat the water.
2. Check that the valve of the thermostat opens at the specified temperature.

   Standard Valve Opening Temperature

   78 to 82°C (172 to 180°F)

   If the valve does not open as specified, replace the thermostat.

3. Check the valve lift.

   Standard Valve Lift

   Item	Condition	Specified Condition
   Type A	93°C (199°F)	10 mm (0.394 in.) or more
   Type B	95°C (203°F)	10 mm (0.394 in.) to 14 mm (0.551 in.)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *A	for Type A
   *B	for Type B
   *a	Valve Lift

   If the valve lift is not as specified, replace the thermostat.

4. Check that the valve is fully closed when the thermostat is at low temperatures (below 75°C (167°F)).

   If not fully closed, replace the thermostat.