Coolant Temperature Sensor/Switch (For Computer): Testing and Inspection

1. Remove sensor and immerse sensor element in suitable temperature controlled solution.
2. Connect ohmmeter across sensor terminals using suitable adapters, and monitor sensor resistance as temperature changes.
3. Resistance should be as follows:

8200 - 10,500 ohms at 14°F,
2200 - 2700 ohms at 68°F,
300 - 360 ohms at 176°F.

4. If resistance is not within specifications, sensor is defective.