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Coolant Temperature Sensor (CTS)

Remove CTS and warm sensor tip in water. Gradually raise water temperature and read resistance on ohmmeter. See COOLANT TEMPERATURE SENSOR RESISTANCE table. If resistance at each temperature is not equal to table reading, replace sensor.

COOLANT TEMPERATURE SENSOR RESISTANCE

Temperature Ohms
32°F (0°C) 6000
68°F (20°C) 3000
104°F (40°C) 1500
140°F (60°C) 700
176°F (80°C) 400
212°F (100°C) 200