FRONT POWER SEAT CONTROL SYSTEM SYSTEM DESCRIPTION


  1. FRONT POWER SEAT CONTROL SYSTEM DESCRIPTION


    • The driver seat is equipped with slide, reclining, lifter, front vertical, and lumbar support adjustment functions.

    • The front passenger seat is equipped with slide, reclining, lifter and front vertical functions.

    • The memory call function uses the key ID code of the key to memorize and recall the appropriate driving position for each individual who possesses a master key or sub key.*


      • *: for Driver Seat

  2. FUNCTION OF MAIN COMPONENTS

    for Driver Seat
    Component Function
    Position control ECU and switch assembly (driver seat) Based on the switch operation, seat adjuster signals are input to the position control ECU and switch assembly (driver seat) to adjust the seat accordingly.
    Front seat adjuster assembly (driver seat) Slide motor Receives a signal from the position control ECU and switch assembly (driver seat), and slides the seat forward and rearward.
    Front vertical motor Receives a signal from the position control ECU and switch assembly (driver seat), and raises and lowers the front of the seat cushion.
    Lifter motor Receives a signal from the position control ECU and switch assembly (driver seat), and raises and lowers the seat cushion.
    Position sensor Built into the slide motor and sends position data to the position control ECU and switch assembly (driver seat) so that it can detect the position at all times.
    Front seatback frame sub-assembly (driver seat) Reclining motor Receives a signal from the position control ECU and switch assembly (driver seat), and tilts the seatback forward and rearward.
    Lumbar support adjuster assembly (driver seat) Receives a signal from the front lumbar power seat switch and operates the built-in motor to adjust the lumbar support.
    Seat memory switch (driver door)

    If the seat memory SET switch is being pressed when one of the M1, M2 or M3 seat memory switches is pressed, or if one of the M1, M2 or M3 switches is pressed within 3 seconds of pressing the SET switch, the front multiplex network door ECU (driver door) sends the signals so that the seat position can be stored.

    Then, when a seat memory switch (driver door) is pressed, a signal is sent to the front multiplex network door ECU (driver door) and the seat position changes according to memory.
    Front lumbar power seat switch Operates the motor built into the lumbar support adjuster assembly (driver seat) according to switch operation.
    for Front Passenger Seat
    Component Function
    Position control ECU and switch assembly (front passenger seat) Based on the switch operation, seat adjuster signals are input to the position control ECU and switch assembly (front passenger seat) to adjust the seat accordingly.
    Front seat adjuster assembly (front passenger seat) Slide motor Receives a signal from the position control ECU and switch assembly (front passenger seat), and slides the seat forward and rearward.
    Front vertical motor Receives a signal from the position control ECU and switch assembly (front passenger seat), and raises and lowers the front of the seat cushion.
    Lifter motor Receives a signal from the position control ECU and switch assembly (front passenger seat), and raises and lowers the seat cushion.
    Position sensor Built into the slide motor and sends position data to the position control ECU and switch assembly (front passenger seat) so that it can detect the position at all times.
    Front seatback frame sub-assembly (front passenger seat) Reclining motor Receives a signal from the position control ECU and switch assembly (front passenger seat), and tilts the seatback forward and rearward.
    Seat memory switch (front passenger door)

    If the seat memory SET switch is being pressed when one of the M1, M2 or M3 seat memory switches is pressed, or if one of the M1, M2 or M3 switches is pressed within 3 seconds of pressing the SET switch, the front multiplex network door ECU (front passenger door) sends the signals so that the seat position can be stored.

    Then, when a seat memory switch (front passenger door) is pressed, a signal is sent to the front multiplex network door ECU (front passenger door) and the seat position changes according to memory.

  3. SYSTEM OPERATION

    Tech Tips


    • The position control ECU and switch assembly is a collective term for the position control ECU and switch assembly (driver seat) and the position control ECU and switch assembly (front passenger seat).

    • The seat memory switch is a collective term for the seat memory switch (driver door) and the seat memory switch (front passenger door).

    • The front multiplex network door ECU is a collective term for the front multiplex network door ECU LH and the front multiplex network door ECU (front passenger door).

    The front power seat functions which can be operated with the power seat motors and memorized are shown below.

    Seat Function Driver Seat Front Passenger Seat
    Slide Power and Memory Power and Memory
    Reclining Power and Memory Power and Memory
    Front Vertical Power and Memory Power and Memory
    Lifter Power and Memory Power and Memory
    Lumbar Support adjustment Power -

    The seat memory switch sends memory switch information to the front multiplex network door ECU. Then the information is sent to the main body ECU (multiplex network body ECU) via CAN and then an instruction to memorize the seat position is sent to the position control ECU and switch assembly via CAN. As a result, the seat position is memorized.