Hyundai Tucson: CCWD Actuator- Description

Hyundai Tucson - Fourth generation (NX4) - (2020-2023) - Workshop Manual / Engine Control - Fuel System / CCWD Actuator / CCWD Actuator- Description


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



Circuit Diagram

Circuit Diagram

Harness Connector

Harness Connector



  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")

  1. Remove the high pressure fuel pipe.

(Refer to Fuel Delivery System - "Fuel Line")

  1. 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)

CCWD Actuator- Installation


     CCWD Actuator- Installation

    WARNING When installing the CVVD actuator the shaft gear do not fit properly, rotate the C W D actuator in both directions and installing it uaturally. (Do not impact when installating the component.) Do not damage to the component whe

     Fuel Delivery System - Fuel Tank

     Fuel Tank

    Component Location Fuel tank Canister Vapor hose Ventilaton hose Fuel filler hose Fuel tank air filter Leveling hose Fuel Level Sender (FLS) Fuel pump Fuel filter Fuel pressure regulator Fuel Perssure Sensor (FPS) High


     Exterior Bumper Antenna

    Disconnect the negative (-) battery terminal. Lift the vehicle. Disconnect the antenna connector (A) from the rear bumper. Remove the antenna (B) after loosening mounting nuts. Buzzer Disconnect the negative (-) battery terminal.

      Repair procedures

    Compession Pressure Inspection WARNING If the there is lack of power, excessive oil consumption or poor fuel economy, measure the compression pressure. Start the engine and turn the coolant temperature to 80 - 95 ºC and stop. Remove the e