Subaru 2009 IMPREZA Service Manual page 1230

2. SENSOR
(7)
(1) Manifold absolute pressure sensor
(2) Engine coolant temperature sensor
(3) Electronic throttle control
Electrical Component Location
(2)
(5) (1)
(8)
(4) Knock sensor
(5) Intake camshaft position sensor
(6) Crankshaft position sensor
EN(H4DOTC)(diag)-9
(3) (8)
(6) (4)
(7)
(8)
ENGINE (DIAGNOSTICS)
(5)
EN-06151
Mass air flow and intake air
temperature sensor
Tumble generator valve ASSY