POWER BACK DOOR SYSTEM SYSTEM DESCRIPTION

POWER BACK DOOR SYSTEM DESCRIPTION

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 positions in the multiplex network door ECU.
  If the battery, power back door fuse, 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 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 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, "CLOSE" request signal from the power back door closer switch, and "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 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).

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.
Power back 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.
Transmitter switch	Pressing the switch causes the power back door to open/close. Pressing the switch again during operation stops.
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.

POWER BACK DOOR OPERATION TIMING CHART

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

*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	-	-

Opening Operation (using back door opener switch assembly):

*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

Opening operation (using back door control switch):

*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	-	-

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

*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	-	-

Closing Operation (using back door control switch):