Engine - Coolant Temperature Sensor/Switch: Testing and Inspection

1. Disconnect the water thermosensor connector.

Water Thermosensor Inspection:

2. Connect an ohmmeter to the sensor terminals.
3. Check the resistance of the sensor.

COOLANT TEMPERATURE RESISTANCE (KOHMS)

-20°C (-4°F) 14.6-17.8
20°C (68°F) 2.2-2.7
40°C (104°F) 1.0-1.3
60°C (140°F) 0.5-0.65
80°C (176°F) 0.290-0.354