Variable Air Duct (Vad) Solenoid Valve Description (L3; Variable Air Duct (Vad) Check Valve (One-Way) Description (L3 - Mazda 6 Training Manual

VARIABLE AIR DUCT (VAD) SOLENOID VALVE DESCRIPTION (L3)

Function
• Switches the intake manifold vacuum passage between the intake manifold and the actuator.
Structure
• Composed of a solenoid coil, spring, plunger, and filter.
Operation
Energized
• The plunger is pulled back to open the air passage between the A and B ports, which applies the atmosphere
to the VAD shutter valve actuator.
De-energized
• The plunger is returned forward to open the air passage between the B and C ports, which applies the intake
manifold vacuum VAD shutter valve actuator.
.
1 Energized
2 De-energized
3 Port A (to atmosphere)
4 Port B (to actuator)
End Of Sie

VARIABLE AIR DUCT (VAD) CHECK VALVE (ONE-WAY) DESCRIPTION (L3)

Function
• The VAD check valve (one-way) maintain the vacuum in the VAD vacuum chamber.
Structure
• The VAD check valve (one-way) is composed of a valve.
Operation
• The VAD check valve (one-way) allows air flow only from VAD vacuum chamber to intake manifold.
.
1 Check valve
2 Green
3 White
End Of Sie
F–16
INTAKE-AIR SYSTEM
5
6
7
8
4
5
Port C (to intake manifold)
Coil
Plunger
Spring
Intake manifold
VAD vacuum chamber
A6E391013000T05
A6E3910W026
A6E391013000T06
A6E3910W035