1A-9 Engine General Information and Diagnosis:
Air Intake System Description
S5JB0A1101006
The main components of the air intake system are air cleaner (1), air cleaner outlet hose (2), electric throttle body (3)
(for the details, refer to “Description of Electric Throttle Body System: ”.), intake manifold tuning (IMT) valve (4) which
adjusts the distributor pipe length of intake manifold to (A) or (B) (for J20 engine) (for the details, refer to “IMT (Intake
Manifold Tuning) System: For J20 Engine in Section 1D”.) and intake manifold (5).
The air (by the amount corresponding to throttle valve (6) opening and engine speed) is filtered by the air cleaner,
distributed by the intake, and finally drawn into each combustion chamber.Electric throttle body is not equipped with
IAC valve for idle speed control. Idle speed control is done by the throttle actuator (7) which opens/closes the throttle
valve. (For the details, refer to “Description of Electric Throttle Body System: ”)
2
3
6
7
5
4
1
5
2
1
3
6
7
A
B
[B]
[A]
I5JB0A110008-02
[A]: For J20 engine
[B]: For M16 engine
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