Thermostat: Testing and Inspection

FA20 COOLING: THERMOSTAT (for Automatic Transmission): INSPECTION; 2013 MY FR-S [03/2012 -]

1. INSPECT THERMOSTAT

(a) Immerse the thermostat in water and then gradually heat the water.

HINT
Hold the thermostat with a wire or the like, so that the thermostat does not come into contact with the bottom of the container.

(b) Check the valve opening temperature of the thermostat.





Valve opening temperature:

48 to 52°C (118 to 126°F)

HINT
If the valve opening temperature is not as specified, replace the thermostat.

(c) Check the valve lift.









Valve lift:

6.0 mm (0.236 in.) or more at 63°C (145°F)

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

(d) Check that the valve is fully closed when the water inlet with thermostat is at low temperatures (below 45°C (113°F)).

HINT
If it is not fully closed, replace the thermostat.