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Home >> Hyundai >> 2007 >> Azera GLS >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel System (G6DB/G6DA - GSL 3.3/3.8) >> Gasoline Engine Control System >> Variable Intake Solenoid (VIS) Valve >> Description
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Variable Intake Solenoid (VIS) Valve: Description

Variable Intake Solenoid (VIS) Valve is installed on the intake manifold and isolates or not the one bank from the other banks to improve the intake efficiency.

  1. Low/Middle Speed: VIS Valve Close → Resonation Effect → Improving Intake Efficiency
  2. High Speed: VIS Valve Open → Improving Intake Inertia Effect → Improving Intake Efficiency
Fig 1: Identifying Variable Intake Solenoid (VIS) Valve Location
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Fig 2: Identifying Variable Intake Solenoid (VIS) Valve
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