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

Components
1. Variable Intake Solenoid (VIS)
Valve
2. Variable Intake Solenoid (VIS) Actuator
3. Variable Intake Solenoid (VIS)
Flap
4. Vacuum Hose ...
Circuit Diagram
Harnness Connector
...
Other information:
Description
Communication Network Diagram
Abbreviation
Expalnation
ACU
Airbag Control Unit
ABS
Anti-lock Brake System
AEB
Autonomous Emergency Braking
...
This warning light illuminates:
Once you set the ignition switch or Engine Start/Stop Button to the ON
position.
- It remains on until the engine is started.
When there is a malfunction with the emission control system.
In this case, have your vehicle inspected by an authorized Kia de ...