Kia Forte: Engine Control System / CVVT Oil Control Valve (OCV)

Kia Forte 2019-2021 (BD) Service Manual / Engine Control / Fuel System / Engine Control System / CVVT Oil Control Valve (OCV)

Specifications
Specification

Item
Specification
Coil Resistance (Ω)
6.9 - 7.9 [20°C(68°F)]

Description and operation
Description

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 cousists 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 PWM (Pulse With Modulation) control signal of ECM.

- the CVVT Oil Temperature Sensor (OTS) which measures the engine oil temperature,

- the Cam Phaser which varies the cam phase by using the hydraulic force of the engine oil.

The engine oil transferred from the CVVT oil control valve changes the cam phase in the direction of the engine rotation (Intake Aduance / Exhaust Retard) or the opposite (Intake Retard / Exhaust Advance) by rotating the rotor connected to the camshaft inside the cam phaser.

Schematic diagrams
Circuit Diagram

Harness Connector

[Bank1 / Intake]

[Bank1 / Exhaust]

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: 6.9 - 7.9 [20°C(68°F)]

Removal & Installation
1.

Turn the ignition switch OFF and disconnect the battery negative (-) terminal.

2.

Disconnect the CVVT oil control valve connector.

3.

Remove the valves (A) by loosening the mounting bolt.

CVVT oil control valve mounting bolt:

9.8 - 11.8 N·m (1.0 - 1.2 kgf·m, 7.2 - 8.7 lb·ft)

[Bank 1 / Intake]

[Bank 1 / Exhaust]

4.

Install in the reverse order of removal.

  

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 engine oil to the valve O-ring.

Purge Control Solenoid Valve (PCSV)
Specifications Specification Item Specification Coil Resistance (Ω) 18.5 - 22.5 [23°C(73.4°F)] Description and ope ...

Electric Waste Gate Actuator (EWGA)
Specifications Specification Item Specification Motor , Supply Voltage (V) 13.5 Supply Voltage Ra ...

Other information:

Kia Forte 2019-2021 (BD) Owners Manual: Using the clutch, Downshifting


Using the clutch The clutch should be pressed all the way to the floor before shifting, then released slowly. The clutch pedal should always be fully released while driving. Do not rest your foot on the clutch pedal while driving. This can cause unnecessary wear. Do not partially enga ...

Kia Forte 2019-2021 (BD) Service Manual: Rear Hub - Carrier


Components and components location Components [Disc type - Couple Torsion Beam Axle] 1. Rear brake disc 2. Rear hub bearing 3. Dust cover 4. Extra bracket [Disc type - Multi link] 1. Rear brake disc 2. ...

Copyright © www.kiforte.com 2017-2021