Variable Air Duct (VAD) Shutter Valve Inspection - Mazda6

Remove air cleaner case. Disconnect vacuum hose from VAD shutter valve actuator. Connect vacuum pump to VAD shutter valve actuator. See Fig 1. Apply vacuum and verify rod moves. See VAD SHUTTER VALVE ACTUATOR SPECIFICATIONS  table. If rod does not move as specified, replace air cleaner. See Fig 2.

Fig 1: Testing VAD Shutter Valve (Mazda6)

Courtesy of MAZDA MOTORS CORP.

Fig 2: Identifying VAD Shutter Valve Components (Mazda6)

Courtesy of MAZDA MOTORS CORP.