Air Intake Control Circuit: Description
The air cleaner is equipped with 2 inlets, one of which is opened or closed by the air intake control valve. This system reduces intake noise and increases engine power at low-to-high engine speed ranges. When the engine is operating in the low-to-mid speed range, this control operates the air intake control valve to close one of the air cleaner inlets. When the engine speed is more than 3600 rpm and the opening angle of the throttle valve is more than 60°, the ECM activates the vacuum switching valve and opens the air intake control valve.