Kia Carens: 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
|
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
|

Inspection
1.
Turn the ignition switch OFF.
2.
Disconnect the OCV connector.
3.
Measure resistance betwee ...
Specification
Item
Specification
Coil resistance (Ω)
30.0 ~ 35.0 [20°C(68°F)]
...
Other information:
WARNING
Always wear appropriate shoes when operating your vehicle. Unsuitable
shoes (high heels, ski boots,etc.) may interfere with your ability to use the
brake, accelerator and clutch (if equipped) pedal.
Do not start the vehicle with the accelerator pedal depressed. The vehicle
can move ...
Inspection
1.
Disconnect the negative (-) battery terminal.
2.
Using a screwdriver or remover, remove the crash pad side cover [LH]
(A).
3.
Remove the lower crash pad switch assembly (A) by pu ...