VARIABLE AIR DUCT (VAD) SOLENOID VALVE OPERATION [L3]

id0113z11500a2

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, and intake manifold vacuum is applied to the VAD shutter valve actuator.

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1
Energized
2
De-energized
3
Port A (to atmosphere)
4
Port B (to actuator)
5
Coil
6
Plunger
7
Spring
8
Port C (to intake manifold)