Throttle Body: Removal

Disconnect the ground cable from battery.
Lift up the vehicle.
Remove the under cover. <Ref. to REMOVAL , Front Under Cover.>
Drain approximately 3.0 L (3.2 US qt, 2.6 Imp qt) of coolant. <Ref. to DRAINING OF ENGINE COOLANT , REPLACEMENT, Engine Coolant.>
Remove the intercooler. <Ref. to REMOVAL , Intercooler.>
Disconnect the connector (A) from the throttle position sensor, and the connector (B) from the manifold pressure sensor.

Fig 1: Identifying Throttle And Manifold Pressure Sensors Connectors
Courtesy of SUBARU OF AMERICA, INC.
Disconnect the engine coolant hose from throttle body.

Fig 2: Locating Throttle Body Engine Coolant Hose
Courtesy of SUBARU OF AMERICA, INC.
Remove the throttle body from the intake manifold.

Fig 3: Locating Intake Manifold Throttle Body Bolts

Courtesy of SUBARU OF AMERICA, INC.