VARIABLE AIR DUCT (VAD) SYSTEM OUTLINE [L3]

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Outline

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

Structure

• The VAD system is composed of the VAD shutter valve, VAD control solenoid valve, VAD vacuum chamber, and VAD check valve (one-way).