Variable Air Duct (VAD) Shutter Valve Inspection

WARNING: This page is about a different car, the 2004 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

Remove the air cleaner case. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION .)
Disconnect the vacuum hose from the VAD shutter valve actuator.
Connect a vacuum pump to the VAD shutter valve actuator.

Fig 1: Connecting Vacuum Pump To VAD Shutter Valve Actuator
Courtesy of MAZDA MOTORS CORP.
Apply vacuum and verify that the rod moves.
- If the rod dose not move, replace the air cleaner.

Fig 2: VAD Shutter Valve Actuator Rod Inspection Table

Courtesy of MAZDA MOTORS CORP.

Fig 3: Inspecting VAD Shutter Valve Actuator Rod

Courtesy of MAZDA MOTORS CORP.