Engine Coolant Temperature Sensor: Removal
WARNING: This page is about a different car, the 2003 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
Turn ignition off. Raise and support vehicle. Drain the cooling system to below the Engine Coolant Temperature (ECT) sensor. See Figure. Disconnect the ECT sensor electrical connector. Carefully remove the ECT sensor. See Figure.