Engine Coolant Temperature Sensor: Removal

Remove the collector cover.
NOTE: Follow these procedures for removal of the collector cover.
1. Lift up the rear side holding two positions (A).
2. Lift up the front side holding two positions (B) while moving it in the forward direction of the vehicle.
  
  Fig 1: Removing Collector Cover
  Courtesy of SUBARU OF AMERICA, INC.
Disconnect the ground cable from battery.
Drain engine coolant. Refer to DRAINING OF ENGINE COOLANT .
Disconnect the connectors from the engine coolant temperature sensor.

Fig 2: Locating Engine Coolant Temperature Sensor Connector
Courtesy of SUBARU OF AMERICA, INC.
Remove the engine coolant temperature sensor.