Kia Picanto (JA): Engine Control System / CVVT Oil Control Valve (OCV)
Specifications
Item
|
Specification
|
Coil Resistance (Ω)
| 6.9 - 7.9 [20°C(68°F)]
|
Control Current (mA)
| 100 - 1000
|
Reted Voltage (V)
| 12
|
Insulation resistance (MΩ)
| 50 [DC 500 V/1 Min]
|
Pin
| 2
|
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 calculated by the engine speed and load.
By
controlling CVVT, the valve overlap or underlap occurs, which makes
better fuel economy, reduces exhaust gases (NOx, HC) and improves engine
performance by reducing pumping loss and internal EGR effect, improving
combustion stability and volumetric efficiency, and increasing
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 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 forward (Intake Aduance / Exhaust Retard) or the reverse
(Intake Retard / Exhaust Advance) direction of the engine rotation by
rotating the rotor connected to the camshaft inside the cam phaser.
Schematic diagrams
Repair procedures
| 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)] |
|
| 1. | Turn the ignition switch OFF and disconnect the battery negative (-) 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 (1.0 - 1.2 kgf·m, 7.2 - 8.7 lb·ft) |
[Bank 1 / Intake]
[Bank 1 / Exhaust]
 |
| •
| Install the component to 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. |
|
| 1. | Install in the reverse order of removal. |
Specifications
Specification
Item
Specification
Coil Resistance (Ω) 18.
Specifications
Specification
Motor
Item
Specification
Max Current (A) < 6.
Other information:
Components and components location
Components
Description and operation
Description
The
ECM (Electro Chromatic inside rear view Mirror) is one that
automatically dims to protect the driver’s eyes when it senses light
reflecting from the car behind.
Repair procedures
Removal
1.Disconnect the negative (-) battery terminal.
2.Remove the steering column upper and lower shrouds after loosening the screws.
(Refer to Body - "Steering Column Shroud Panal")
3.Disconnect the wiper switch / washer switch connector (A).
