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

1. Remove the switch from the radiator and place it in water with a thermometer.

Testing Water Thermoswitch:

2. Gradually heat the water and check the continuity of the switch.

COOLANT TEMPERATURE CONTINUITY

More than approx 17°C (63°F) YES
Less than approx 17°C (63°F) NO

3. If not correct, replace the water thermoswitch.