Subaru 2002 Impreza Service Manual page 55

AIR LINE
Fuel Injection (Fuel System)
E: IDLE AIR CONTROL SOLENOID VALVE
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The idle air control solenoid valve is located in the throttle body and regulates the amount of in-
take air that flows bypassing the throttle valve into the intake manifold during engine idling. It is
activated by a signal from the ECM in order to maintain the engine idling speed at a target speed.
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The idle air control solenoid valve is a solenoid-actuated rotary valve consisting of a coil, rotary
valve, spring and housing. The housing is an integral part of the throttle body and provided with
a bypass air port whose opening area is changed by the rotary valve.
(1) Connector
(2) Air outlet port
(3) Air inlet pori
(4) Terminal
NF0397
FU-5