Back Door Handle Switch Operation (Fully Closed --> Fully Open Operation)

WARNING: This page is about a different car, the 2004 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.

When the back door is unlocked and the back door handle is pulled, back door control unit terminal 26 receives the signal.
The back door control unit checks the automatic transaxle select lever (A/T device) position through terminal 18, vehicle speed through terminal 21 and battery voltage and automatic door main switch position through terminal 13.
When the back door control unit receives the signal, if the auto back door operating enable conditions are met, it sends a signal through terminal 6 and grounds terminal 9 to sound the warning chime, sends a signal to the BCM through terminal 4 to flash the hazard lamps and sends the unlock signal to the back door latch.
When the back door latch receives the signal, it supplies voltage from terminal 12 to operate the release actuator and releases the door lock.
The back door control unit supplies power to the magnetic clutch and the back door motor and moves the back door in the open direction. (At this time, it also executes speed control, input reverse, and overload reverse control.)
When the back door is opened to the full-open position, the full-open position is detected by the encoder, and the back door control unit switches the back door motor OFF and the magnetic clutch is pulsed and then turned OFF.
The back door is held in the fully open position by the gas stays.