Coolant Temperature Sensor/Switch (For Computer): Service and Repair

Fig. 28 ECT Sensor Location:

The Engine Coolant Temperature (ECT) sensor is located at the front of the cylinder head near the thermostat.

REMOVAL

WARNING: THE COOLING SYSTEM MAY BE UNDER PRESSURE. HOT COOLANT CAN CAUSE BURNS.

1. Partially drain cooling system until coolant level is below cylinder head.
2. Disconnect ECT sensor electrical connector from sensor.

Fig. 29 ECT Sensor Removal/Installation:

3. Remove ECT sensor from cylinder head.
4. Discard sensor O-ring.

INSTALLATION
1. Clean sensor mounting hole of rust or contaminants.
2. Install new O-ring to sensor. Apply clean engine oil to sensor O-ring and sensor threads.
3. Install ECT sensor into cylinder head. Tighten to 14 Nm (10 ft. lbs.) torque.
4. Connect sensor electrical connector.
5. Fill cooling system and check for coolant leaks.