

Curtain air bags are located along both sides of the roof rails above the front and rear doors. They are designed to help protect the heads of the front seat occupants and the rear outboard seat occupants in certain side impact collisions.
The curtain air bags are designed to deploy during certain side impact collisions, depending on the crash severity, angle, speed and point of impact. The curtain air bags are not designed to deploy in all side impact situations, collisions from the front or rear of the vehicle or in most rollover situations.
WARNING
WARNING - No attaching objects
Side impact air bag
Why didn’t my air bag go off in a
collision? (Inflation and non-inflation
conditions of the air bag)Kia Cee'd JD Service Manual: Repair procedures
Inspection
Signal Circuit Inspection
1.
Check clutch switch pull-up voltage
(1)
IG KEY "OFF", ENGINE "OFF".
(2)
Disconnect clutch switch connector.
...
Kia Cee'd JD Service Manual: 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). ...