System Description

SYSTEM DIAGRAM 

Courtesy of NISSAN NORTH AMERICA, INC.

Component	Function
Front door switch	Detects front door open/close condition and transmits door switch signal to BCM.
BCM	Controls power window relay. Controls retained power function.
Power window main switch	Refer to Power Window Main Switch .
Front power window switch (passenger side)	Refer to Front Power Window Switch (Passenger side) .
Rear power window switch (LH and RH)	Refer to Rear Power Window Switch .
Front power window motor (driver side)	Refer to Front Power Window Motor (Driver Side) .
Front power window motor (passenger side)	Refer to Front Power Window Motor (Passenger Side) .
Rear power window motor (LH and RH)	Refer to Rear Power Window Motor .
Power window relay	Refer to Power Window Relay .

POWER WINDOW OPERATION 

• BCM controls the power window relay and controls the ignition ON power source supplied to each power window switch.
• Power window system is activated by power window switch when ignition switch is placed ON or retained power is operating.
• Power window main switch opens/closes all door glass.
• Front and rear power window switch opens/closes the corresponding door glass.

POWER WINDOW AUTO-OPERATION (FRONT DRIVER SIDE) 

• AUTO UP/DOWN operation can be performed when power window main switch turns to AUTO.
• Power window main switch transmits AUTO UP/DOWN signal to front power window motor (driver side) and operating the front power window motor (driver side) turns to AUTO.
• Front power window motor (driver side) reads the changes of operating condition and stops AUTO operation when door glass is at fully opened/closed position.

RETAINED POWER FUNCTION 

Retained power function is an additional power supply function that enables power window system to operate for 45 seconds after ignition switch is placed OFF.

RETAINED POWER FUNCTION CANCEL CONDITIONS

Any of the following condition is satisfied:

• Front door CLOSE → OPEN.
• When ignition switch is placed ON again.
• When timer times out (45 seconds).

LIN COMMUNICATION (FRONT DRIVER SIDE) 

Front power window motor (driver side), power window main switch and BCM transmit and receive signal via LIN communication.

POWER WINDOW LOCK 

Ground circuit inside power window main switch shuts off when power window lock switch is ON. This inhibits rear power window switch operation.

ANTI-PINCH SYSTEM (FRONT DRIVER SIDE) 

• Pinch foreign material in the door glass during AUTO-UP operation, and it is the anti-pinch function that lowers the door glass when detected.
• CPU continues detecting the movement of front power window motor (driver side) while front power window motor (driver side) is operating.
• Front power window motor (driver side) controls to lower the door glass for approximately 5.71 in (145 mm) or more after it detects foreign material is trapped in the door glass.

OPERATION CONDITION

• When door glass AUTO-UP operation is performed (anti-pinch function does not operate just before the door glass closes and is fully closed)