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Home >> Subaru >> 1984 >> Wagon 4WD F4-1781cc 1.8L Turbo >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Coolant Temperature Sensor/Switch (For Computer) >> Testing and Inspection >> Component Inspection
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Component Inspection


1. Place coolant thermosensor into a container with water.
2. Install suitable ohmmeter onto coolant thermosensor and measure the resistance.
3. With water temperature at 68 deg. F., resistance value obtained should be 2-3 kohms.
4. Heat water until temperature is 122 deg. F. Resistance value obtained should be 700-1000 ohms. If resistance values obtained are not within specification, replace coolant thermosensor.
5. If the test is to be conducted in the car, a cold (shop temperature) thermosensor will be 2-3 kohms and a fully warmed up thermosensor (approx. 180 deg.F) will be 250-400 ohms.


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