Kia Sportage: Engine Control System / CVVT Oil Control Valve (OCV) Description and operation
Continuous Variable Valve Timing (CVVT) system advances or retards the valve
timing of the exhaust valve in accordance with the ECM control signal which
is calculated by the engine speed and load.
By controlling CVVT, the valve over-lap or under-lap occurs, which makes better
fuel economy and reduces exhaust gases (NOx, HC) and improves engine performance
through reduction of pumping loss, internal EGR effect, improvement of combustion
stability, improvement of volumetric efficiency, and increase of expansion work.
This system consist of
-the CVVT Oil Control Valve (OCV) which supplies the engine oil to the cam phaser
or cuts the engine oil from the cam phaser in accordance with the ECM PWM (Pulse
With Modulation) control signal,
-and the Cam Phaser which varies the cam phase by using the hydraulic force
of the engine oil.
The engine oil getting out of the CVVT oil control valve varies the cam phase
in the direction (Intake Advance/Exhaust Retard) or opposite direction (Intake
Retard/Exhaust Advance) of the engine rotation by rotating the rotor connected
with the camshaft inside the cam phaser.

Specification
Item
Specification
Coil Resistance (Ω)
6.9 - 7.9 [20°C(68°F)]
...
Circuit Diagram
Terminal Information
Terminal Illustration
Terminal Function
No.
Function
Connected ...
Other information:
Depress the brake pedal.
Shift into N (Neutral) with an Automatic Transaxle.
Press the CANCEL switch.
Decrease the vehicle speed lower than the memory speed by 12 mph (20 km/h).
Decrease the vehicle speed to less than approximately 15 mph (25 km/h).
Each of these actions will cancel ...
To close the liftgate, lower and push down the liftgate firmly. Make sure that
the liftgate is securely latched.
Make sure your hands, feet and other parts of your body are safely out of the
way before closing the liftgate.
WARNING - Exhaust fumes
Driving with the liftgate open is not advis ...