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

CIRCUIT DIAGRAM







HARNESS INSPECTION PROCEDURES

SENSOR INSPECTION
1. Remove the engine coolant temperature sensor from the intake manifold.







2. With temperature sensing portion of engine coolant temperature sensor immersed in hot water, check resistance.
3. If the resistance deviates from the standard value greatly, replace the sensor.




USING VOLTMETER

INSTALLATION
1. Apply sealant LOCTITE 962T or equivalent to threaded portion.
2. Install engine coolant temperature sensor and tighten it to specified torque.
Tightening torque
Engine coolant temperature sensor: 15-20 Nm (150-200 kg.cm, 11-15 lbf)
3. Connect the harness connector securely.