Acura NSX 1997 Service Manual page 266

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Intake Air System

Intake Air Bypass (IAB) Control System

Satisfactory power performance is achieved by closing and opening the intake air bypass (IAB) control valves. High torque

at low engine speed is achieved when the valves are closed, whereas high power at high engine speed is achieved when

the valves are opened.

OPEN: HIGH ENGINE SPEED

CLOSED: LOW ENGINE SPEED

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INTAKE AIR BYPASS (IAB) CONTROL

SOLENOID VALVE ON

ENGINE SPEED IS ABOVE 4,800 rpm

To No. 5 BACK-UP LIGHTS

ALTERNATOR TURN SIGNALS

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