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

id0113b3150800


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.
Not energized
•  The intake manifold vacuum passage is blocked, and the passage between ports B and C opens, depressurizing the actuator.

LF

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L3

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1
Energized
2
Not energized
3
Port A (to intake manifold)
4
Port B (to actuator)
5
Port C (to atmospheric air)
6
Solenoid coil
7
Spring
8
Plunger