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

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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)