Engine Coolant Temperature Sensor: Removal

Disconnect the ground cable from battery.
Remove the generator. < Ref. to REMOVAL , Generator. >
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 1: Locating Engine Coolant Temperature Sensor Connector
Courtesy of SUBARU OF AMERICA, INC.