Mazda 6 - Variable Air Duct (Vad) Shutter Valve Description (L3

INTAKE-AIR SYSTEM
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VARIABLE AIR DUCT (VAD) SHUTTER VALVE DESCRIPTION (L3)
A6E391013000T04
Function
• Opens and closes the shutter valves.
Structure
• The VAD shutter valve actuator is composed of a rod, diaphragm chamber, and spring.
Operation
• Normally, the rod is pushed by the force of the spring, opening the shutter valve. When intake manifold vacuum
is applied to the diaphragm chamber, the rod is pulled, closing the shutter valve.
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A6E3910W029
1 VAD shutter valve
2 VAD control solenoid valve
3 VAD vacuum chamber
4 VAD check valve (one-way)
A6E3910W027
1 Shutter valve open
2 Shutter valve close
3 VAD shutter valve actuator
4Rod
5 VAD shutter valve
6 Intake manifold vacuum