POWER TRUNK LID SYSTEM SYSTEM DESCRIPTION


  1. GENERAL


    • The luggage compartment door can be opened by pressing the luggage door opening switch assembly on the instrument panel, the luggage electrical key on the rear license garnish or the electrical key transmitter sub-assembly (luggage door open switch).

    • In addition, a door control switch has been provided on the inner side of the luggage compartment door. By using this switch, the luggage compartment door can be closed automatically.

    • The luggage closer motor assembly has been installed near the luggage compartment door hinge LH. The luggage closer motor opens and closes the luggage compartment door.

    • This system is controlled by the luggage closer motor assembly.

  2. FUNCTION OF MAIN COMPONENTS

    Components Function
    Luggage closer motor assembly

    • Controls the power trunk lid system in accordance with the signals received from the switches and ECUs.


      Power trunk opener and closer motor

    • Opens and closes the luggage compartment door when actuated by the luggage closer motor assembly.


      Motor clutch

    • Transmits the rotation of the closer motor to the driven gear.


      Hall IC

    • Detects the luggage door closer assembly position and the opening and closing speed of the luggage compartment door.
    Luggage door closer assembly

    • The luggage door closer assembly provides both the opener and closer functions. In accordance with the signals received from the switches, the luggage door closer assembly automatically closes the luggage compartment door that is ajar to the fully closed state. This is accomplished by actuating the closer motor to push and turn the latch in order to pull the striker in.

    • Upon receiving the open signals from the switches, the system actuates the motor to disengage the latch from the link mechanism in order to disengage the striker from the latch, enabling the luggage compartment door to open.


      Closer motor

    • Locks and unlocks the latch of the luggage door closer assembly when actuated by the luggage closer motor assembly.


      Striker switch, courtesy switch

    • Detects whether the luggage compartment door is open or closed. This switch turns on when the luggage compartment door is open or ajar and off when the luggage compartment door is closed.


      Closer motor position switch

    • Detects the initial (neutral) position of the driven gear of the closer motor. The switch is off when the luggage door closer assembly operates to the open side, and on when it operates to the closed side.


      Pawl switch

    • Detects the pawl switch condition.


      Half-latch switch

    • Detects the ajar position of the latch, turns on in the fully open condition.
    Warning buzzer The buzzer sounds twice during the luggage compartment door automatic close operation.
    Luggage door opening cancel switch assembly Setting this switch to off prohibits open operation.
    Luggage door opening switch assembly

    • Transmits a luggage compartment door open signal to the luggage closer motor assembly.

    • If the luggage door opening switch assembly is pressed during the opening operation, the opening operation is stopped. If pressed during the closing operation, the operation is reversed.
    Door control switch

    • Transmits a luggage compartment door close signal to luggage closer motor assembly.

    • If the luggage door opening switch assembly is pressed during the opening operation, the opening operation is stopped. If pressed during the closing operation, the operation is reversed.
    Electrical key transmitter sub-assembly (luggage door open switch)

    • The luggage compartment door opens when the luggage door open switch on the electrical key transmitter sub-assembly is pressed outside of the vehicle.

    • If the luggage compartment door opener switch is pressed during the opening operation, the opening operation is stopped. If pressed during the closing operation, the operation is reversed.
    Luggage electrical key switch

    • When the key is held, and the luggage electrical key switch is pressed, the luggage compartment door automatically opens.

    • If the luggage electrical key switch is pressed during the opening operation, the opening operation is stopped. If pressed during the closing operation, the operation is reversed.
    Combination meter assembly The combination meter assembly transmits a vehicle speed signal to the luggage closer motor assembly via CAN communication.
    Power management control ECU The power management control ECU transmits a shift position P signal to the luggage closer motor assembly via CAN communication.

  3. POWER TRUNK LID OPERATION TIMING CHART


    1. Opening Operation:

      A0003WFE13

      Tech Tips


      • *1: The power trunk lid operation is initiated when the luggage door opening switch of the electrical key transmitter sub-assembly (electrical key), the luggage electrical key switch, or the luggage door opening switch assembly is turned on.

      • *2: The motor clutch turns on and the closer motor release operation begins.

      • *3: The door motor operation begins with the half-latch switch and pawl switch turning on (the door opening operation begins).

      • *4: The closer gear end point is detected via the closer pulse and the closer operation stops.

      • *5: When the luggage compartment door opens to a certain position determined by the door pulse, the closer motor release return operation begins.

      • *6: When the neutral position is detected via the closer pulse, the closer motor release return operation stops.

      • *7: The door motor operation stops and the motor clutch turns off due to detection of the luggage compartment door fully open stop position via the door pulse.

      • During the opening operation, the operation stops and the luggage compartment door becomes free when the luggage door opening switch of the electrical key transmitter sub-assembly (electrical key), the luggage electrical key switch, the luggage door opening switch assembly, or the door control switch is turned on.

    2. Closing Operation:

      A0003TME05

      Tech Tips


      • *1: The operation is initiated when the door control switch is turned on.

      • *2: The motor clutch turns on, the door motor operation begins (door closer operation begins) and the buzzer sounds.

      • *3: The door motor operation stops and the closer motor closed operation begins when the half-latch switch turns from on to off.

      • *4: The closer motor closed return operation begins with the pawl switch off and the motor clutch turning off.

      • *5: When the neutral position is detected via the closer pulse, the closer motor operation stops.

      • During the closing operation, the operation stops and the opening operation begins when the luggage door opening switch of the electrical key transmitter sub-assembly (electrical key), the luggage electrical key switch, the luggage door opening switch assembly, or the door control switch is turned on.