VARIABLE AIR DUCT (VAD) CHECK VALVE (ONE-WAY) INSPECTION [L3]

1. Remove the VAD check valve (one-way). (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [LF, L3]

2. Blow through A and verify that air flows from B.

3. Blow through B and verify that air does not flow from A.

• If not as specified, replace the VAD check valve (one-way).