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 multiplex network door ECU records the back door position in the multiplex network door ECU.

        If the cable is disconnected from the negative (-) battery terminal or the fuses in the power source circuit of the power back door system or multiplex network door ECU is removed and reinstalled, the position of the power back door recorded in the multiplex network door ECU will be cleared.

        In such cases, initialization of the multiplex network door ECU is necessary. Refer to the Initialization.

        Click here

      3. The multiplex network door ECU receives "OPEN/CLOSE" request signals for the back door. Then, the multiplex network door ECU controls the back door opening/closing operation by sending commands to the back door lock assembly and back door motor.

      4. The power back door system has various request signals: open/close request signals from the transmitter switch (electrical key transmitter sub-assembly), open/close request signals from the power back door control switch, open request signal from the back door opener switch assembly, open/close request signals from the back door control switch and on/off request signals from the combination meter assembly.

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

      6. The power back door does not reverse the direction that the power back door is operating and stops if any switch is pressed during operation.

      7. The power back door stops that the power back door is operating if any switch is pressed during operation.

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

    2. Function of main components:

      Component Function
      Wireless door lock buzzer

      • Sounds for 0.8 seconds when the door control switch assembly, back door control switch, back door opener switch assembly or transmitter switch is pressed.

      • Sounds intermittently while the power back door is operating.

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

      • Sounds for 0.2 seconds when the back door opener switch assembly is pressed while the power back door is operating.
      Hazard warning lights 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.
      Combination meter assembly

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

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

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

      • Pressing the switch again during operation causes the power back door stop.
      Back door control switch Transmits a power back door open/close request signal to the multiplex network door ECU via the main body ECU (multiplex network body ECU).
      Back door opener switch assembly Transmits a power back door open request signal to the multiplex network door ECU via the certification ECU (smart key ECU assembly) (w/ Entry and Start System) or main body ECU (multiplex network body ECU) (w/o Entry and Start System).
      Door control switch assembly Transmits a power back door switch signal to the multiplex network door ECU.
      Kick door control sensor* Transmits a kick operation detection signal to the multiplex network door ECU.

      *: w/ Touchless Power Back Door

  2. POWER BACK DOOR OPERATION TIMING CHART


    1. Opening Operation (using back door control switch and transmitter switch):

      A01V9P4C04
      *1 Door control switch assembly or electrical key switch sub-assembly (power back door button) *2 Power back door warning buzzer
      *3 Power back door unit assembly set - -
      *a Back door lock motor *b Sector switch
      *c Half latch switch *d Back door courtesy switch
      *e Hazard warning light *f 0.8 seconds
      *g Conditions to start automatic operation are met *h Returns to original position
      *i Release output *j Open output
      *k Speed control range *l State of back door
      *m Fully closed *n Door ajar
      *o Memorized position or fully opened - -

    2. Opening Operation (using back door opener switch assembly):

      A01V7HHC04
      *1 Back door opener switch assembly *2 Power back door warning buzzer
      *3 Power back door unit assembly set - -
      *a Back door lock motor *b Sector switch
      *c Half latch switch *d Back door courtesy switch
      *e Hazard warning light *f Conditions to start automatic operation are met
      *g 0.8 seconds *h Operation standby time
      *i Returns to original position *j Release output
      *k Open output *l Speed control range
      *m State of back door *n Fully closed
      *o Door ajar *p Memorized position or fully opened

    3. Opening operation (using back door control switch):

      A01V9HHC03
      *1 Back door control switch *2 Power back door warning buzzer
      *3 Power back door unit assembly set - -
      *a Hazard warning light *b Conditions to start automatic operation are met
      *c 0.8 seconds *d Open output
      *e Speed control range *f State of back door
      *g Partway position *h Door ajar
      *i Memorized position or fully opened - -

    4. Opening Operation (using kick door control sensor):

      A01V74AC01
      *1 Kick door control sensor *2 Power back door warning buzzer
      *3 Multiplex network door ECU *4 Main body ECU (multiplex network door ECU)
      *5 Certification ECU (smart key ECU assembly) *6 Power back door unit assembly set
      *a Detection signal *b 0.8 seconds
      *c 0.2 seconds *d Key verification request
      *e Buzzer sound request *f Door unlock output
      *g Door unlock request *h Door unlatch request
      *i State of back door *j Open operation starts

    5. Closing Operation (using back door control switch and transmitter switch):

      A01V9KIC03
      *1 Door control switch assembly or transmitter sub-assembly (power back door button) *2 Power back door warning buzzer
      *3 Power back door unit assembly set - -
      *a Back door lock motor *b Half latch switch
      *c Pawl switch *d Back door courtesy switch
      *e Hazard warning light *f 0.8 seconds
      *g Conditions to start automatic operation are met *h 1-second wait
      *i Pull-in *j Return to original position
      *k Closer delay time 0.3 seconds *l Closer output
      *m Speed control range *n State of back door
      *o Stop position *p Door ajar
      *q Fully closed - -

    6. Closing Operation (using back door control switch):

      A01VARGC03
      *1 Back door control switch *2 Power back door warning buzzer
      *3 Power back door unit assembly set - -
      *a Back door lock motor *b Half latch switch
      *c Pawl switch *d Back door courtesy switch
      *e Hazard warning light *f 0.8 seconds
      *g Conditions to start automatic operation are met *h 1-second wait
      *i Pull-in output *j Return to original position
      *k Closer delay time 0.3 seconds *l Closer output
      *m Speed control range *n State of back door
      *o Stop position *p Door ajar
      *q Fully closed - -

    7. Closing Operation (using kick door control sensor):

      A01V95EC01
      *1 Kick door control sensor *2 Power back door warning buzzer
      *3 Multiplex network door ECU *4 Main body ECU (multiplex network body ECU)
      *5 Certification ECU (smart key ECU assembly) *6 Power back door unit assembly set
      *a Detection signal *b 0.8 seconds
      *c 0.2 seconds *d Key verification request
      *e Buzzer sound request *f Cabin certification result signal
      *g State of back door *h Close operation starts