POWER BACK DOOR SYSTEM SYSTEM DESCRIPTION

• *: w/ Power Back Door Hazard Warning Light

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 back door motor unit records the back door positions in the back door motor unit.

      If the battery, power source fuses of the power back door system, or back door motor unit is removed and then reinstalled, the back door motor unit loses the memory of the door positions.

      In such cases, initialization of the back door motor unit is necessary. Refer to Initialization.

      Click here

   3. The back door motor unit receives "OPEN/CLOSE" request signals for the back door. Then, the back door motor unit 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 electrical key transmitter sub-assembly (power back door button), "OPEN/CLOSE" request signal from the map light assembly (power back door switch), "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.

   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 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 map light assembly (power back door switch), back door control switch, back door opener switch assembly or electrical key transmitter sub-assembly (power back door button) is pressed. Sounds intermittently while the power back door is operating. Sounds twice for 0.1 seconds to notify that the power back door will reverse moving direction after being triggered by activation of 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.
   Power slide door main switch	The power back door system does not operate when the function is OFF. The power back door system operates when the function is ON.
   Electrical key transmitter sub-assembly (power back door button)	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 back door motor unit via the main body ECU (multiplex network body ECU).
   Back door opener switch assembly	Transmits a power back door OPEN request signal to the back door motor unit via the certification ECU (smart key ECU assembly).
   Map light assembly (power back door switch)	Transmits a combination switch assembly signal to the back door motor unit via the main body ECU (multiplex network body ECU).

POWER BACK DOOR OPERATION TIMING CHART