Hyundai Elantra: Variable Intake Solenoid (VIS) Valve. Description and Operation - Engine Control System - Fuel System - Hyundai Elantra MD 2010-2018 Service manualHyundai Elantra: 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).

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


    Installation
    • Install the component with the specified torques. • ...

    Variable Intake Solenoid (VIS) Valve. Specifications
    Specification Item Specification Coil resistance (Ω) 30.0 ~ 35.0 [20°C(68°F)] ...