VARIABLE INTAKE AIR CONTROL OPERATION [L8, LF]

Operation conditions

• If any of the following conditions are met:

- Engine speed is approx. 4,750 rpm or more

- Engine speed is approx. 3,150 rpm or less and the throttle opening angle is the specified value or more. (heavy load condition)

When operation conditions are not met

• The PCM energizes the variable intake air solenoid valve, closing the variable intake air shutter valve to enhance the inertia charging effect in the engine low to middle speeds and low load ranges.

When operation conditions are met

• The PCM blocks energization the variable intake air solenoid valve, opening the variable intake air shutter valve to enhance the inertia charging effect in the engine high speed and high-load range.