Back Door Close Switch Operation (Fully Open → Fully Closed Operation)

WARNING: This page is about a different car, the 2008 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.

When the back door close switch is pressed with the automatic main door switch ON, the back door control unit terminal 8 receives the signal.
The back door control units checks battery voltage.
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 and sends a signal to the BCM through terminal 4 to flash the hazard lamps.
The back door control unit supplies power to the magnetic clutch and the back door motor and move the back door in the close direction. (At this time, it also executes speed control, input reverse, and overload reverse control.)
When the back door reaches the half-latch state, the half-latch switch detects this and the signal is sent to the back door control unit terminal 22.
When the back door control unit receives the signal, it switches OFF the back door motor and the magnetic clutch.
When the cinch latch motor operates and the close switch detects this, the back door control unit terminal 14 receives the signal from back door latch terminal 5.
When the back door latch operates and full close is detected through terminal 14 of the back door control unit, the back door auto closure operation ends and the door is fully closed.