Intake Air Bypass (Lab) Control System [818C1 Engine] - Acura Integra 1998 Service Manual

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Intake Air System
Intake Air Bypass (lAB) Control System [818C1 enginel
Descriplion
Two air intake oaths are erovided in the intake manifold to allow the selection of the intake path most favofable for a given
engine speed.
Satjsfactory power performance is achieved by closing and opening the intake air bypass (lAB) control valves. High torque
at low RpM is acheived when the valves are closed, whereas high power at high RPM is achieved by when the valves are
opened.
IAB CONTROL
VALVES
ECM
i l
l f
1 l
i
1 1 - 1 3 4
\r--_
CHECI( VALVE