Engine coolant temperature sensor (FA20)
Components Inspection Removal / installation
ENGINE CONTROL
ENGINE COOLANT TEMPERATURE SENSOR (FA20)
EXPLODED VIEW
REMOVAL
1. Disconnection of the battery ground terminal (Refer to 
)
)2. Draining of coolant (SUBARU Super Coolant) (Refer to )
)3. Removal of intake manifold (Refer to )
)
4. Removal of engine water temperature sensor
(1) Disconnect the connector for engine water temperature sensor.
(2) Remove the engine water temperature sensor and gasket.
INSTALLATION
1. Installation of engine water temperature sensor
(1) Using a new gasket, install the engine water temperature sensor.
Standard value:
Standard value:
Tightening torque=18N·m
{
184kgf·cm}
{13.3ft·lbf}
CAUTION:
The torque wrench may be combined with the union nut wrench to extend its length for tightening operation. In this case, if it is tightened to the specified torque indicated on the torque wrench, the actual tightening torque exceeds the specification. (Refer to )
)(2) Connect the connector for engine water temperature sensor.
2. Installation of intake manifold (Refer to )
)3. Connection of the battery ground terminal
Standard value:
Standard value:
Tightening torque=6.0N·m
{
61kgf·cm}
{4.4ft·lbf}
4. Replenishing of coolant (SUBARU Super Coolant) (Refer to )
)5. Leak check of coolant (SUBARU Super Coolant) (Refer to )
)UNIT INSPECTION
1. Inspection of engine water temperature sensor
Text in Illustration
| *1 |
Resistance |
*2 |
Temperature |
| *3 |
Acceptable |
- |
- |
| *a |
Component without harness connected (Engine Coolant Temperature Sensor) |
- |
- |
(1) Measure the resistance between the terminals.
Resistance
| Inspection terminals |
Inspection conditions |
Standard value |
|---|---|---|
| 1 - 2 |
Approx. 20°C {68°F} |
2.35 to 2.65 kΩ |
| Approx. 80°C {176°F} |
0.305 to 0.331 kΩ |
CAUTION:
When the inspection is performed with the sensor immersed in water, be careful not to allow the ingress of water into the terminal part. After inspection is completed, wipe off the water drops from the sensor.