Kia Sorento: Variable Intake Solenoid (VIS) Valve Description and Operation

Description

•	The Variable Intake Solenoid (VIS) valve controls the vacuum modulator which activates a valve in the intake manifold.

•	The VIS valve controls the vacuum modulator which activates a valve in the intake manifold.

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The Engine Control Module (ECM) opens or closes this valve according to engine condition (Refer to below table).

Engine Control / Fuel System — Engine Control System / Variable Intake Solenoid (VIS) Valve / Description and Operation / Description illustration

Engine condition	VIS valve	Operation
Medium speed	Closed	Increasing engine performance in low engine speed by reducing intake interference among cylinders
Low / High speed	Open	Minimizing intake resistance by shortening intake manifold length and increasing area of air entrance

Variable Intake Solenoid (VIS) Valve Specifications Specification Item Specification Coil resis...

On Vehicle Inspection 1. The engine control system can be more quickly diagnosed for problems with the KDS. (Refer to "DTC guide") ...

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