VARIABLE AIR DUCT (VAD) CONTROL [LF, L3]

id0140001200a6

Outline

• The VAD control system opens the VAD shutter valve in the air cleaner only at high engine speeds so that engine performance does not decrease at high engine speeds due to insufficient mass airflow amount.

Operation

• The PCM turns the VAD control solenoid valve ON to open the VAD shutter valve when all of the following conditions have been met.

- ECT: above 70 °C {158 °F}

- Engine speed: above 5,800 rpm

- Throttle opening angle: above 50%