Throttle Body - Subaru 2009 IMPREZA Service Manual

FUEL INJECTION (FUEL SYSTEMS)

2. Throttle Body

A: REMOVAL
1) Set the vehicle on a lift.
2) Disconnect the ground cable from battery.
3) Lift up the vehicle.
4) Remove the under cover.
5) Drain approximately 3.0 2 (3.2 US qt, 2.6 Imp
qt) of coolant. <Ref. to CO(H4SO)-13, DRAINING
OF ENGINE COOLANT, REPLACEMENT, Engine
Coolant.>
6) Remove the air intake chamber. <Ref. to
IN(H4SO)-7, REMOVAL, Air Intake Chamber.>
7) Disconnect the throttle position sensor connec-
tor (A) and manifold absolute pressure sensor con-
nector (B).
(B)
(A)
8) Disconnect the engine coolant hoses (A) from
throttle body.
9) Remove the bolts (B) which secure the throttle
body to the intake manifold, and remove the throttle
body.
(A)
Throttle Body
IN-00203
FU-03448
(B)
(B)
(A)
FU-01084
FU(H4SO)-14
B: INSTALLATION
Install in the reverse order of removal.
NOTE:
Use a new gasket.
Tightening torque:
8 N·m (0.8 kgf-m, 5.9 ft-lb)
C: INSPECTION
1. THROTTLE SENSOR
(METHOD WITH CIRCUIT TESTER)
1) Remove the lower inner trim of passenger's
side. <Ref. to EI-55, REMOVAL, Lower Inner
Trim.>
2) Turn over the floor mat of passenger's seat.
3) Remove the protect cover.
4) Remove the nuts and bolts which hold the ECM
to the bracket.
5) Turn the ignition switch to ON. (engine OFF)
FU-03416
FU-03417