Hyundai Elantra: Engine Control System / CVVD Actuator
Description and operation
CVVD(Continuous Variable Valve Duration) System is a device to control the optimum open and close timing according to the driving mode by changing the valve opening section.
[CVVD Actuator]

Specifications
Item
|
Specification
|
Type
| BLDC MOTOR
|
Operating Voltage (V)
| 9.1 - 16
|
Control Frequency (kHz)
| 10
|
Schematic diagrams

Harness Connector

Repair procedures
1. | Turn the ignition switch OFF, and disconnect the battery negative (-) terminal. |
2. | Remove the air cleaner assembly. (Refer to Engine Mechanical System - "Air Cleaner Assembly") |
3. | Remove the high pressure fuel pipe. (Refer to Fuel Delivery System - "Fuel Line") |
4. | Remove the CVVD actuator (A) after loosening the mounting bolt. Tightening Torque : 18.6 - 24.5 N.m (1.9 - 2.5 kgf.m, 13.7 - 18.0 lb-ft) |

|
•
| When installing the CVVD actuator the shaft gear do not fit properly, rotate the CVVD actuator in both directions and installing it naturally. (Do not impact when installating the component.) |
•
| Do not damage to the component when installating the cylinder head cover oil seal (A). 
|
|
•
| 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. |
|
1. | Turn the ignition switch OFF. |
2. | Connect the diagnostic tool to Data Link Connector (DLC). |
3. | Turn the ignition switch ON. |
4. | Select "Vehicle, Model Year, Engine, System". |
5. | Select "CVVD Intake Adaption". 
|
6. | Perform the "CVVD Learning" refer to the diagnostic tool. 

|
Description and operation
DescriptionIntegrated Thermal Management Module (ITM) is a device that controls the coolant flow rate according to coolant temperature...
Other information:
General Service Information Protection of the Vehicle Always be sure to cover fenders, seats, and floor areas prior to beginning work.
•
The support rod must be inserted into the hole near the edge of the hood whenever you inspect the engine compartment to prevent the hood from falling and causing possible injury.•
Make s..
Towing Service
If emergency towing is necessary,
we recommend having it done by
an authorized HYUNDAI dealer or a
commercial tow-truck service.
Proper lifting and towing procedures
are necessary to prevent damage to
the vehicle. The use of wheel dollies or
flatbed is recommended.
It is acceptable to tow the vehicle with
the rear wheels on the ground (without
dollies) and the front wheels ..