water temp sensor on 1994 Toyota Celica

where is the water temp sensor (TO89422-35010) on this model (2.2). What is involved w/ replacement?

1 answer
The Engine Coolant Temperature Sensor (ETC) is located on the thermostat housing, here is a picture
http://bit.ly/1rCbzg
You can get repairs manuals on autozone.com for testing and removal and installations.