Coolant Temperature Sensor/Switch (For Computer): Testing and Inspection
INSPECT ENGINE COOLANT TEMPERATURE SENSORa. Inspect the resistance.
1. Using an ohmmeter, measure the resistance between the terminals.
NOTE: When checking the engine coolant temperature sensor in water, be careful not to allow water to intrude into the terminals. Then dry the engine coolant temperature sensor after checking.
If the resistance is not as specified, replace the engine coolant temperature sensor.