Engine Coolant Temperature Sensor Signal
WARNING: This page is about a different car, the 2002 Toyota ECHO, 2002 Toyota Celica, 2001 Toyota ECHO, and 2001 Toyota Celica. However, it is still accessible from the selected car via links, so may be relevant.
Coolant temperature sensor delivers input signal to ECM, indicating engine coolant temperature. Engine coolant temperature sensor is located at right rear of cylinder head.