Kia Cee'd JD Service Manual: Description and operation
OBD-II review
1. Overview
The California Air Resources Board (CARB) began regulation of On Board Diagnostics
(OBD) for vehicles sold in California beginning with the 1988 model year. The
first phase, OBD-I, required monitoring of the fuel metering system, Exhaust
Gas Rec ...
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). ...