Diagnostic procedure
Mazda 6 Service Manual: Variable air duct (vad) shutter valve inspection (l3)
1. Remove the air cleaner case. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION.)
2. Disconnect the vacuum hose from the VAD shutter valve actuator.
3. Connect a vacuum pump to the VAD shutter valve actuator.
4. Apply vacuum and verify that the rod moves.
If the rod dose not move, replace the a ...
Mazda 6 Service Manual: Scheduled Maintenance (Mexico)
Follow Schedule 1 if the vehicle is operated mainly where none of the following
conditions apply.
Repeated short-distance driving
Driving in dusty conditions
Driving with extended use of brakes
Driving in areas where salt or other corrosive materials are used
Driving on rough or muddy ...