Nissan Pathfinder. Manual — part 943
PWC-68
< SYSTEM DESCRIPTION >
[LH & RH FRONT AUTO UP/DOWN]
COMPONENT PARTS
Component Description
INFOID:0000000009176178
4.
Main power window and door lock/
unlock switch
5.
Power window and door lock/unlock
switch RH
6.
Rear power window switch LH (RH
similar)
7.
Front door lock assembly LH (key
cylinder switch)
8.
Front door switch LH (RH similar)
Component
Function
BCM
• Supplies power to the window switches.
• Controls retained power.
Main power window and door lock/un-
lock switch
Directly controls all power window motors.
Power window and door lock/unlock
switch RH
Controls power window motor of passenger door.
Rear power window switch
• Controls anti-pinch operation of power window.
• Controls right and left power window motors for the rear doors.
Power window motor
• Integrates the CPU and WINDOW MOTOR.
• Starts operating with signals from each power window switch.
• Transmits power window motor rotation as a pulse signal to power window switch.
• Controls anti-pinch operation for all windows.
Front door lock assembly (door key cyl-
inder switch)
Transmits operation condition of door key cylinder switch to power window main switch.
Front door switch LH/RH
Detects door open/close condition and transmits it to the BCM.
SYSTEM
PWC-69
< SYSTEM DESCRIPTION >
[LH & RH FRONT AUTO UP/DOWN]
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SYSTEM
System Diagram
INFOID:0000000009176179
System Description
INFOID:0000000009176180
POWER WINDOW OPERATION
• Power window system is activated by the power window switch when the ignition switch is in the ON position
or during the retained power operation after ignition switch turns OFF.
• Power window main switch can open/close door glass.
• Front and rear power window switch can open/close the corresponding door glass.
• Power window lock switch can lock all power windows other than driver seat.
• All power windows open when pressing Intelligent Key unlock button for 3 seconds.
• If door glass receives resistance that is more than the specified value and the power window is in the AUTO-
UP operation, power window will move in the reverse direction (Anti-Pinch Function).
POWER WINDOW AUTO-OPERATION
• AUTO-UP/DOWN operation can be performed when each power window motor turns to AUTO.
• Power window switch reads the changes of the CPU signal and stops AUTO operation when door glass is at
fully opened/closed position.
• Power window motor is operable in case of CPU malfunctioning.
• AUTO function does not operate if the CPU is malfunctioning.
POWER WINDOW SERIAL LINK
Power window main switch, front power window switch (passenger side) and BCM transmit and receive the
signal by power window serial link.
The signal mentioned below is transmitted from BCM to power window main switch, front power window
switch (passenger side).
• Keyless power window down signal.
• Door switch signal.
AWKIA2060GB
PWC-70
< SYSTEM DESCRIPTION >
[LH & RH FRONT AUTO UP/DOWN]
SYSTEM
The signal mentioned below is transmitted from power window main switch to front power window switch
(passenger side).
• Front passenger side door window operation signal.
• Retained power operation signal.
RETAINED POWER OPERATION
• Retained power operation is an additional power supply function that enables power window system to oper-
ate during the 45 seconds even when ignition switch is turned OFF.
Retained Power Function Cancel Conditions
• Front door CLOSE (door switch OFF)
→OPEN (door switch ON).
• When ignition switch is ON again.
• When timer time passes. (45 seconds)
POWER WINDOW LOCK FUNCTION
Ground circuit inside power window main switch shuts off when power window lock switch is ON. This inhibits
power window switch operation except with the power window main switch.
ANTI-PINCH OPERATION
• Pinch foreign material in the door glass during Auto-Up operation, and it is the anti-pinch that lowers the
door glass 150 mm (5.9 in) or 2 seconds when detected.
• CPU continues detecting the movement of power window motor and transmits to the power window switch
as the CPU signal while power window motor is operating.
• Resistance is applied to the power window motor rotation that changes the frequency of CPU signal if for-
eign material is trapped in the door glass.
• Power window switch controls to lower the door glass for 150 mm (5.9 in) or 2 seconds after it detects CPU
pulse signal frequency change.
Operation Condition
When all door glass AUTO-UP operation is performed (anti-pinch function does not operate just before the
door glass closes and is fully closed)
NOTE:
Depending on environment and driving conditions, if a similar impact or load is applied to the door glass, it
may lower.
DOOR KEY CYLINDER SWITCH OPERATION
Hold the door key cylinder to the LOCK or UNLOCK direction for 1 second or more to OPEN or CLOSE all
power windows when ignition switch is OFF. In addition, it stops when key position is moved to N (NEUTRAL)
when operating.
Operation Condition
• Ignition switch OFF.
• Hold door key cylinder to LOCK position for 1 second or more to perform CLOSE operation of the door
glass.
• Hold door key cylinder to UNLOCK position for 1 second or more to perform OPEN operation of the door
glass.
KEYLESS POWER WINDOW DOWN FUNCTION
All power windows open when the unlock button on Intelligent Key is activated and pressed for more than 3
seconds with the ignition switch OFF. The windows keep opening if the unlock button is continuously pressed.
The power window opening stops when the following operations are performed.
• When the unlock button is pressed for more than 15 seconds.
• When the ignition switch is turned ON while the power window opening is operated.
• When the unlock button is released.
While retained power operation activate, keyless power window down function cannot be operated.
Fail-safe
INFOID:0000000009176181
FAIL-SAFE CONTROL
Window system switches to fail-safe control when a malfunction is detected in the CPU during UP and DOWN
operation. Switches to fail-safe control when an error beyond the regulation value is detected between the fully
closed position and the actual position of the glass.
SYSTEM
PWC-71
< SYSTEM DESCRIPTION >
[LH & RH FRONT AUTO UP/DOWN]
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It changes to condition before initialization and the following functions do not operate when switched to fail-
safe control:
• Auto-up operation
• Anti-pinch function
• Retained power function
Perform initial operation to recover when switched to fail-safe mode. However, it switches back to fail-safe
control when malfunction is found in power window switch or in motor.
Malfunction
Malfunction condition
Pulse sensor malfunction
When only one side of pulse signal is being detected for more than the specified value.
Both pulse sensors mal-
function
When both pulse signals have not been detected for more than the specified value during glass
open/close operation.
Pulse direction malfunc-
tion
When the pulse signal that is detected during glass open/close operation detects the opposite con-
dition of power window motor operating direction.
Glass recognition position
malfunction 1
When it detects the error between glass fully closed position in power window switch memory and
actual fully closed position during glass open/close operation is more than the specified value.
Glass recognition position
malfunction 2
When it detects pulse count more that the value of glass full stroke during glass open/close opera-
tion.
Malfunction of not yet up-
dated closed position of
glass
When glass open/close operation is continuously performed without fully closing more that the spec-
ified value (approximately 10 strokes).
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