Power Back Door System

System Diagram (Part 1):

System Diagram (Part 2):

SYSTEM DESCRIPTION

1. POWER BACK DOOR SYSTEM DESCRIPTION

a. The power back door system controls the power back door to automatically open/close using a motor.
1. The power back door system operates only when the necessary conditions are present.
2. The power back door ECU records the back door positions in the memory. When any of the battery, fuse, power back door ECU and power back door drive unit are removed and then reinstalled, the power back door ECU loses the memory of the door positions. In such cases, resetting the power back door system is necessary. Please refer to the resetting operation specified in step [*1].
3. "OPEN/CLOSE" request signals for the back door are input to the power back door ECU. Then, the power back door ECU controls the back door opening/closing operation by outputting commands to the back door lock and back door drive 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 opener/ closer switch, "CLOSE" request signal from the power back door closer switch, and "OPEN" request signal from the back door opener switch (outside handle switch).
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 system causes a buzzer to sound in warning when the shift lever is moved into any position except P when the power back door starts operating or while the power back door is operating and the buzzer continues sounding.
7. [*1] The power back door system turns OFF when the shift lever is moved into any position except P while the power back door is opening. The power back door continues to close when the shift lever is moved into any position except P while the power back door is closing.
8. The power back door reverses the direction that the power back door is operating when any switch is pressed during operation.
9. A pulse sensor and a touch sensor are used to prevent anything from being gets caught in while the power back door is operating (jam protection function).
10. 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.
11. The power back door system slows the back door down when the back door comes closer to the fully open position or fully closed position in order to reduce the impact against the vehicle body.




b. Operational condition







c. Function description







d. [*2] Switches