STEERING COLUMN SYSTEM


  1. FUNCTION OF MAIN COMPONENTS

    Component Function
    Steering Column Assembly Tilt Motor

    • Adjusts the tilt position of the steering column assembly in accordance with the voltage output of the multiplex tilt and telescopic ECU.

    • Sends the motor rotation angle signal to the multiplex tilt and telescopic ECU.
    Telescopic Motor

    • Adjusts the telescopic position of the steering column assembly in accordance with the voltage output of the multiplex tilt and telescopic ECU.

    • Sends the motor rotation angle signal to the multiplex tilt and telescopic ECU.
    Multiplex Tilt and Telescopic ECU Calculates position information and operating condition using signals from the position sensors, the tilt and telescopic switch and ECUs, and controls the tilt motor and telescopic motor.
    Tilt and Telescopic Switch Sends a switch signal to the multiplex tilt and telescopic ECU depending on the switch operation.
    Front Seat Inner Belt Assembly (Driver Side) Sends the seat belt buckle switch signal to the airbag ECU assembly.
    Position Control ECU Assembly (Driver Side)

    • Detects the driver's seat position.

    • Calculates the automatic control (auto away and auto return) seat movement amount and sends the value to the multiplex tilt and telescopic ECU.
    Front Multiplex Network Door ECU (Driver Side) Sends a seat memory switch signal to the position control ECU assembly (driver side).
    Certification ECU (Smart Key ECU Assembly) Detects the power switch (push start switch) operation condition.
    Airbag ECU Assembly Sends the driver seat belt buckle switch signal to the main body ECU (multiplex network body ECU).
    Main Body ECU (Multiplex Network Body ECU) Sends automatic control (auto away and auto return) permission signals to the multiplex tilt and telescopic ECU.

  2. SYSTEM CONTROL


    1. Manual control using tilt and telescopic switch operations and automatic control linked with power switch (push start switch) operation and the condition of the driver seat belt drive the tilt motor and telescopic motor, ensuring superior operability and accessibility.

    2. Memory control, which operates the power tilt and power telescopic system in conjunction with the front power seat control system, is provided.

    3. A customization function is used so that the auto away and auto return settings can be changed as desired.

      Control Function
      Manual Control The tilt and telescopic positions can be adjusted using the tilt and telescopic switch.
      Automatic Control Auto Away When exiting the vehicle, if the power switch (push start switch) is turned off and the driver seat belt is unbuckled, the steering wheel assembly will be moved to the highest tilt level and will be fully retracted telescopically.
      Auto Return When entering the vehicle, if the power switch (push start switch) is turned on (IG) or the driver seat belt is buckled, the steering wheel assembly will be returned to the position it was in before the operation of the auto away function (multiplex tilt and telescopic ECU memory position).
      Memory Control The memory function can store the driver seat position and tilt and telescopic position.

  3. FAIL-SAFE


    1. When the multiplex tilt and telescopic ECU detects a malfunction in the power tilt and telescopic system, the ECU changes to fail-safe mode. For details, refer to the Repair Manual.

  4. DIAGNOSIS


    1. If the multiplex tilt and telescopic ECU detects a malfunction in the power tilt and telescopic system, the ECU stores the malfunction data in memory as Diagnostic Trouble Codes (DTCs). Then, by connecting the Global TechStream (GTS) to the DLC3, the Diagnostic Trouble Code (DTC) can be accessed and an Active Test can be performed to test the operation of the tilt motor and the telescopic motor. For details, refer to the Repair Manual.