Kia Cee'd: 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 intake and 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,
- the CVVT Oil Temperature Sensor (OTS) which measures the engine oil temperature,
-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.

Inspection
1.
Turn the ignition switch OFF.
2.
Disconnect the PCSV connector.
3.
Measure resistance betwe ...
Specification
Item
Specification
Coil Resistance (Ω)
6.9 ~ 7.9 [20°C(68°F)]
...
Other information:
Kia Cee'd JD Service Manual: Brake Booster Repair procedures
Brake Booster Operating
Test
For simple checking of the brake booster operation, carry out the following
tests.
1.
Run the engine for one or two minutes, and then stop it. If the pedal
depresses fully the first time but gradually becomes higher when ...
Kia Cee'd JD Owners Manual: Additional safety precautions
Never let passengers ride in the
cargo area or on top of a foldeddown
back seat. All occupants should
sit upright, fully back in their seats with
their seat belts on and their feet on the
floor.
Passengers should not move out of
or change seats while the vehicle is
moving. ...