Engine Coolant Temperature Sensor: Removal

Disconnect the ground cable from battery.

Fig 1: Disconnecting Ground Cable From Battery
Courtesy of SUBARU OF AMERICA, INC.
Drain engine coolant. < Ref. to DRAINING OF ENGINE COOLANT , REPLACEMENT, Engine Coolant.>
Disconnect the connector (A) from the engine coolant temperature sensor, and remove the engine coolant temperature sensor.

Fig 2: Locating Connector From Engine Coolant Temperature Sensor
Courtesy of SUBARU OF AMERICA, INC.