POWER BACK DOOR SYSTEM SYSTEM DESCRIPTION


  1. POWER BACK DOOR SYSTEM DESCRIPTION


    1. The power back door system controls the power back door by automatically opening and closing the power back door with a motor.


      1. The power back door system operates only when the necessary conditions are satisfied.

      2. The power back door ECU records the back door positions in the power back door ECU.

        If the auxiliary battery, power back door fuse or power back door ECU (power back door motor unit) is removed and then reinstalled, the power back door ECU loses the memory of the door positions.

        In such cases, initialization of the power back door ECU (power back door motor unit) is necessary. Refer to Initialization Click here.

      3. The power back door ECU receives "OPEN/CLOSE" request signals for the back door.

        Then, the power back door ECU controls the back door opening/closing operation by sending commands to the back door lock assembly and back door motor unit.

      4. The power back door system has various request signals: "OPEN/CLOSE" request signal from the transmitter switch, "OPEN/CLOSE" request signal from the power back door control switch, "OPEN" request signal from the back door opener switch assembly (opener switch)*, "CLOSE" request signal from the power back door closer switch, and "OFF" request signal from the power back door main switch.


        • *: for models with the "PBD Assist Open Operation" customize setting item.

      5. The power back door system sets off an alarm (using a buzzer) and hazard warning lights* when the power back door starts operating.


        • *: w/ Power back door hazard warning light

      6. The power back door reverses the direction that the power back door is operating if any switch is pressed during operation.

      7. A pulse sensor and a touch sensor are used to prevent anything from being caught in the door while the power back door is closing (jam protection function).

      8. The power back door system stops motor operation and switches to the manual operation mode when the jam protection function is activated repeatedly more than the specified number of times.

      9. The power back door system slows the back door down when the back door approaches the fully opened position or fully closed position in order to reduce the impact against the vehicle body.

    2. Function of main components:

      Component Function
      Back door buzzer

      • Sounds for 0.8 seconds when the power back door closer switch, power back door control switch, back door opener switch assembly (opener switch)*1, *3 or transmitter switch is pressed.

      • Sounds intermittently while the power back door is operating.*1

      • Sounds twice for 0.1 seconds to notify that the direction of door movement will reverse after being triggered by activation of the jam protection function.

      • Sounds for 2 seconds when the back door opener switch assembly is pressed while the power back door is operating.
      Hazard warning lights*2 Flash twice to notify that the power back door will start operating when an OPEN/CLOSE request signal is input from a switch while the back door is in the closed or fully open position.
      Power back door main switch

      • The power back door system does not operate when the switch is off.

      • The power back door system operates when the switch is on.
      Transmitter switch

      • Pressing the switch causes the power back door to open/close.

      • Pressing the switch again during operation reverses the direction of door movement.
      Power back door control switch Transmits a power back door OPEN/CLOSE request signal to the power back door ECU via the main body ECU (multiplex network body ECU).
      Back Door Opener Switch Assembly (Opener Switch)*1, 3 Transmits a power back door OPEN request signal to the power back door ECU (power back door motor unit) via the certification ECU (smart key ECU assembly).
      Power back door closer switch Transmits a power back door CLOSE signal to the power back door ECU.

      • *1: Customize setting is off

      • *2: w/ Power back door hazard warning light

      • *3: for models with the "PBD Assist Open Operation" customize setting item.