Subaru Impreza 2003 Service Manual page 790

ENGINE (DIAGNOSTICS)
3. SOLENOID VALVE, EMISSION CONTROL SYSTEM PARTS AND IGNITION SYSTEM
PARTS
(4)
(1) Purge control solenoid valve
(2) Idle air control solenoid valve
ELECTRICAL COMPONENTS LOCATION
(1)
(3) Ignition coil and ignitor ASSY
EN(H4SOw/oOBD)-14
(3) (2)
(4) CO resistor (Without catalyst con-
verter model)
EN-01530