Diesel Data: Automotive Repair

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

1. Disconnect the connector from the Water Temperature Sensor.
2. Using an Ohmmeter, measure the resistance between the terminals.

Checking Water Temperature Sensor Resistance:





3. Refer to the specification chart and compare readings with appropriate temperature parameters.

Water Temperature Sensor:





4. If readings are not as specified, replace the Water Temperature Sensor.