Hyundai Tucson: Gear acmator assembly- Description

Hyundai Tucson - Fourth generation (NX4) - (2020-2023) - Workshop Manual / DCT (Dual Clutch Transmission) System / DCT (Dual Clutch Transmission) System (SBC) / Gear acmator assembly- Description

  • Components location : DCT (Dual Clutch Transmission)



The input shaft speed sensor is important in that it detects the input shaft RPM and sends this information to the Transmission Control Module (TCM).

It provides important input information for electric control.

The information is needed in all operations, including feedback control, gear shift control and failure detection of other sensors.


  1. Input shaft speed sensor 1 (Odd)
  2. Input shaft speed sensor 2 (Even)


Circuit Diagram

Circuit Diagram



  1. The DCT system can be more quickly diagnosed for troubles by using the vehicle diagnostic system (diagnostic tool). (Refer to DTC guide) diagnostic tool provides the following information.

1) Self diagnosis : Inspects and displays diagnostic trouble code (DTC)

2) Sensor data : Checks the system input/output value staftis

3)Forced operation : Checks the system operating status

4) Additional function : Controls system options, zero point adjustment and other functions


  1. Turn ignition switch OFF and disconnect the battery negative (-) terminal.
  2. Remove the air cleaner assembly and air duct.

(Refer to Engine Mechanical System - "Air cleaner")

  1. Disconnect the input shaft speed sensor connector (A).

  1. Remove the clutch actuator.

(Refer to Dual Clutch Transmission Control System - "Clutch Actuator & TCM Assembly")

  1. Remove the input shaft speed sensor (A).

Tightening torque : 9.8 - 11.8 N.m (1.0 - 1.2kgf.m, 7.2 - 8.7 lb-ft)



  1. Install in the reverse order of removal.


Before installing the input speed sensor,check the assembled state of the O-rings (A) and should apply gear oil to the surface of O- rings. Description


  • The inhibitor switch is installed on top of transmission, and is connected to the shift lever through shift cable.
  • Inhibitor switch signals (SI, S2, S3, S4) are transmitted to the TCM according to the driver's shift lever control.

Inhibitor switch/ Manual control lever


     Inhibitor switch/ Manual control lever

    Components Inhibitor switch Manual control lever Fault Diagnosis Fault Diagnosis for Symptom Specifications Signal Code Table Inspection WARNING Thoroughly check connectors for looseness, poor connection, bending, cor

     Inhibitor switch/ Manual control lever- Removal

    Turn ignition switch OFF and disconnect the batteiy negative (-) terminal. Make sure vehicle does not roll before setting shift lever to "N" position. Remove the air cleaner assembly and air duct. (Refer to Engine Mechanical

     Shift lever knob & boots assembly

    Components Shift lever knob & boots assembly Shift lever assembly Shift cable Manual control lever Shift cable retainer Removal Remove the shift lever knob & boots (A) pull both of it up. Remove the floor consol


     Battery Pack Assembly Inlet Duct/ Battery Pack Assembly Outlet Duct

    Removal and Installation Battery Pack Assembly Inlet Duct Turn the ignition switch OFF and disconnect the battery (-) terminal. Remove the luggage board (A). Separate the inlet cooling duct (A) in the direction of the arrow. Tigh

     Roof trim assembly

    Component Location Roof trim assembly Replacement WARNING When removing with a flat-tip screwdriver or remover, wrap protective tape around the tools to prevent damage to components. Put on gloves to prevent hand injuries. W