Kia Sedona: Variable Intake Solenoid (VIS) Valve Description and Operation
Third generation YP (2014-2026) / Kia Sedona YP Service Manual / Engine Control / Fuel System / Engine Control System / Variable Intake Solenoid (VIS) Valve Description and Operation
| Description |
Variable Intake manifold Solenoid (VIS) valves are installed
on the intake manifold (VIS Valve 1) and the surge tank (VIS Valve 2).
VIS valves 1 and 2 control vacuum modulators that activate valves in the
intake manifold and the surge tank. These valves are opened or closed
by ECM according to engine condition (Refer to below table).
| Engine condition | VIS valve 1 | VIS valve 2 | Operation |
| Intake Manifold | Surge Tank | ||
| Low speed | Closed | Closed | Increasing engine performance in low engine speed by reducing intake interference among cylinders |
| Medium speed | Open or Closed | Open | Increasing intake efficiency |
| High speed | Open | Open | Minimizing intake resistance by shortening intake manifold length and increasing area of air entrance |
Variable Intake Solenoid (VIS) Valve Specifications
Specification
ItemSpecificationCoil Resistance (Ω)30.0 ~ 35.0 [20°C(68°F)]
...
Variable Intake Solenoid (VIS) Valve Schematic Diagrams
Circuit Diagram
...
Other Information:
Before starting
Close and lock all doors.
Position the seat so that all controls are easily reached.
Buckle your seat belt.
Adjust the inside and outside rearview mirrors.
Be sure that all lights work.
C ...
Smart key precautions
The smart key will not work if any of the following occur :
- The smart key is close to a radio transmitter such as a radio station or an
airport which can interfere with normal operation of t ...
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