POWER BACK DOOR SYSTEM SYSTEM DESCRIPTION

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 met.

   2. The multiplex network door ECU records the back door positions in the multiplex network door ECU.

      If the auxiliary battery, power source fuses of the power back door system, or multiplex network door ECU is removed and then reinstalled, the multiplex network door ECU loses the memory of the door positions.

      In such cases, initialization of the multiplex network door ECU is necessary. Refer to 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 signal from the transmitter switch (electrical key transmitter sub-assembly), "OPEN/CLOSE" request signal from the combination switch assembly, "OPEN" request signal from the back door opener switch assembly, "OPEN/CLOSE" request signal from the back door control switch, and "ON/OFF" request signal 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.

      
      

      • *: w/ Power Back Door Hazard Warning Light

   6. The power back door does not reverse rotation if any switch is pressed during operation.

   7. The power back door stops 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
   Power back door warning buzzer	Sounds for 0.8 seconds when the combination switch assembly, back door control switch, back door opener switch assembly or transmitter switch (electrical key transmitter sub-assembly) 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 (w/ Power Back Door Hazard Warning Light)	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 (electrical key transmitter sub-assembly)	Pressing the switch causes the power back door to open/close. Pressing the switch again during operation stops the power back door.
   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).
   Combination switch assembly	Transmits a combination switch assembly signal to the multiplex network door ECU via the main body ECU (multiplex network body ECU).

POWER BACK DOOR OPERATION TIMING CHART