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.

    Other information:

    Kia Cadenza YG 2016-2021 Service Manual: Description and Operation

    Description System Overview The System offers the following features: – Human / machine interface through a 1-stage button, for terminal switching and engine start. – Control of external relays for ACC / IGN1 / IGN2 terminal switching and STARTER, without use of mechanical ignition switch.

    Kia Cadenza YG 2016-2021 Service Manual: General Safety Information and Caution

    Instructions When Handling Refrigerant 1. R-134a liquid refrigerant is highly volatile. A drop on the skin of your hand could result in localized frostbite. When handling the refrigerant, be sure to wear gloves. 2. It is standard practice to wear goggles or glasses to protect your eyes, and gloves to protect your hands.

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