Kia Cadenza YG: Engine Control System / CVVT Oil Control Valve (OCV) Repair procedures

Kia Cadenza YG 2016-2021 Service Manual / Engine Control / Fuel System / Engine Control System / CVVT Oil Control Valve (OCV) Repair procedures

Inspection
1.
Turn the ignition switch OFF.
2.
Disconnect the OCV connector.
3.
Measure resistance between the OCV terminals 1 and 2.
4.
Check that the resistance is within the specification.
Specification: Refer to “Specification”
Removal
[CVVT Oil Control Valve (Intake)]
1.
Turn the ignition switch OFF and disconnect the battery negative (-) cable.
2.
Remove the intake manifold.
(Refer to Engine Mechanical System - “Intake Manifold”)
3.
Disconnect the CVVT oil control valve connector (A).
4.
Remove the installation bolt (B), and then remove the valve from the engine.
[Bank 1]

[Bank 2]

[CVVT Oil Control Valve (Bank1/Exhaust)]
1.
Turn the ignition switch OFF and disconnect the battery negative (-) cable.
2.
Disconnect the CVVT oil control valve connector (A).

3.
Remove the surge tank.
(Refer to Engine Mechanical System - "Surge Tank")
4.
Remove the cylinder head cover.
(Refer to Engine Mechanical System - “Cylinder Head Cover”)
5.
Remove the installation bolt (A), and then remove the valve from the engine.

[CVVT Oil Control Valve (Bank2/Exhaust)]
1.
Turn the ignition switch OFF and disconnect the battery negative (-) cable.
2.
Disconnect the CVVT oil control valve connector (A).

3.
Remove the cylinder head cover.
(Refer to Engine Mechanical System - “Cylinder Head Cover”)
4.
Remove the installation bolt (A), and then remove the valve from the engine.

Inatallation
   
•
Install the component with the specified torques.
•
Note that internal damage may occur when the component is dropped. If the component has been dropped, inspect before installing.
   
•
Apply the engine oil to the valve O-ring.
   
•
Exactly distinguish the color of the valve and harness connectors in bank 1 and 2 when installing, or the engine will operate abnormally (Refer to the table below).
Items
Component Side
Harness Side
Bank 1 (RH)
Grey
Bank 2 (LH)
Black

1.
Install in the reverse order of removal.
CVVT oil control valve installation bolt:
9.8 ~ 11.8 N.m (1.0 ~ 1.2 kgf.m, 7.2 ~ 8.7 lb-ft)

    Circuit Diagram

    Description Variable Intake manifold Solenoid (VIS) valves are installed on the intake manifold (VIS Valve 1) and the surge tank (VIS Valve 2). These VIS valve 1 and 2 control vacuum modulators which activate valves in the intake manifold and the surge tank.

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