Kia Sportage: Engine Control System / Variable Intake Solenoid (VIS) Valve Description and operation

Kia Sportage QL (2015-2025) Service Manual / Engine Control / Fuel System / Engine Control System / Variable Intake Solenoid (VIS) Valve Description and operation

Description

Variable Intake manifold Solenoid (VIS) valve is installed on the intake manifold. The VIS valve controls the vacuum modulator which activates a valve in the intake manifold. The ECM opens or closes this valve according to engine condition (Refer to below table).

Operation

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

Variable Intake Solenoid (VIS) Valve Components and components location

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Variable Intake Solenoid (VIS) Valve Schematic diagrams

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