Kia Picanto JA Quiz
Engine Control System/Fuel System

CVVT Oil Control Valve (OCV)

In this manual: Engine Control System/Fuel System
General Information — 8Maintenance — 30Engine Mechanical System — 46Engine Electrical System — 14Emission Control System — 11Engine Control System/Fuel System — 46Clutch System — 12Manual Transmission — 10Drive Shaft and Axle — 8Suspension System — 15Steering — 9Restraints — 17Brake System — 22Body (Interior and Exterior) — 104Body Electrical System — 80Heating, Ventilation, and Air Conditioning — 17
7steps
~42min
2/5difficulty
0102030405011.89N·mlb·ft
Tightening torque found on this page
Done 0 of 7

Specifications

Specification

Item Specification
Coil Resistance (Ω) 6,9–7,9 [20 °C]
Control Current (mA) 100 - 1000
Rated Voltage (V) 12
Insulation Resistance (MΩ) 50 [500 V DC/1 min]
Pin 2

Description and Operation

Description

The Continuously Variable Valve Timing (CVVT) system advances or retards the valve timing of the intake and exhaust valves in accordance with the ECM control signal, which is calculated based on engine speed and load. When CVVT is controlled, valve overlap or underlap is produced, which provides better fuel economy, reduced exhaust emissions (NOx, HC), and improved engine performance by reducing pumping losses and the internal exhaust gas recirculation effect, improving combustion stability and volumetric efficiency, and increasing expansion work. This system consists of: - CVVT Oil Control Valve (OCV), which supplies engine oil to the cam phaser or shuts off engine oil from the cam phaser in accordance with the ECM PWM (Pulse Width Modulation) control signal. - Cam Phaser, which changes the camshaft phase using the hydraulic pressure of the engine oil. Engine oil supplied from the CVVT oil control valve changes the camshaft phase in the advance direction (Intake Advance / Exhaust Retard) or the retard direction (Intake Retard / Exhaust Advance) of engine rotation by rotating the rotor connected to the camshaft inside the cam phaser.

Circuit Diagrams

Wiring Diagram

[A/T]

[M/T]

Repair Procedures

Inspection

  1. Turn the ignition off.
  2. Disconnect the OCV connector.
  3. Measure the resistance between terminals 1 and 2 of the OCV.
  4. Make sure the resistance is within specification.

    Specification: 6.9–7.9 [20 °C]

Removal

  1. Turn the ignition switch OFF and disconnect the negative (-) battery terminal.
  2. Disconnect the CVVT oil control valve connector (A).
  3. Remove the valves by loosening the mounting bolt (B). CVVT oil control valve mounting bolt: 9.8–11.8 N·m [Bank 1 / Intake]
    [Bank 1/Exhaust]

Installation

  1. Install in the reverse order of removal.

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