Subaru 2002 IMPREZA Service Manual page 448

ENGINE (DIAGNOSTICS)
• Solenoid Valve, Emission Control System Parts and Ignition System Parts
(1) Air assist injector solenoid valve
(2) Idle air control solenoid valve
ELECTRICAL COMPONENTS LOCATION
(3) (1)
(3) Purge control solenoid valve
(4) Ignition coil & ignitor ASSY
(4) (2)
EN-16
EN0736