#
VARIABLE INTAKE AIR SOLENOID VALVE CONSTRUCTION/OPERATION [LF, L3]

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## Construction

• Mainly composed of the solenoid coil, spring, and plunger.

## Operation

Energized
• The solenoid coil magnetizes, pulling the plunger. The passage between A and B ports opens due to the plunger being pulled, and intake manifold vacuum is applied to the actuator.
De-energized
• The intake manifold vacuum passage is blocked, and the passage between ports B and C opens, depressurizing the actuator.

LF

L3

.

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