Intake Air System; System Description - Acura 3.5 RL Manual

Intake Air System

System Description

The system supplies air for all engine needs. It consists of the intake air pipe. Air Cleaner, intake air duct. Throttle Body,
Idle Air Control (IAC) Valve, idle air control thermal valve, and intake manifold.
A resonator in the intake air pipe provides additional silencing as air is drawn into the system.
IMRC SOLENOID VALVE 2
IMRC
SOLENOID
VALVE 1
IMRC
DIAPHRAGM
VALVE 1
IMRC
VACUUM
TANK
IMRC
CHECK
VALVE
IMRC
ENGINE
DIAPHRAGM
COOLANT
VALVE 2
IDLE AIR
CONTROL
THERMAL
VALVE
INTAKE
MANIFOLD
THROTTLE BODY
From PGM-FI
MAIN RELAY
IAC
VALVE
With
TCS
IDLE
ADJUSTING
SCREW
INTAKE
AIR
DUCT
From No. 20 ECU
(PCM) (20 A)
FUSE
(in the under-dash
fuse/relay box)
VARIOUS
SENSORS