nsxd11136a.pdf

Intake Air System
Description
Satisfactory power performance is achieved by closing and opening the intake air bypass (IAB) control valves. High tor-
que 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.
Intake Air Bypass (IAB) Control System
OPEN: HIGH ENGINE SPEED
INTAKE AIR BYPASS (IAB) CONTROL
SOLENOID VALVE ON
IAB
CHECK
VALVE
CLOSE: LOW ENGINE SPEED
IAB
CONTROL
DIAPHRAGM
IAB
CONTROL
VALVE
ECM
IAB
VACUUM
TANK
IAB CONTROL
SOLENOID
VALVE
TO No. 2 (15 A) FUSE
BLK/YEL
RED/BLU