2008 INFINITI QX56 door lock

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Page 2846 of 4083

INFINITI QX56 2008 Factory Service Manual POWER WINDOW SYSTEMPWC-5
< FUNCTION DIAGNOSIS >
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FUNCTION DIAGNOSIS
POWER WINDOW SYSTEM
System DiagramINFOID:0000000001735644
POWER WINDOW ANTI-PINCH SYSTEM
System Desc

Page 2847 of 4083

INFINITI QX56 2008 Factory Service Manual PWC-6
< FUNCTION DIAGNOSIS >
POWER WINDOW SYSTEM
REAR POWER WINDOW CONTROL
INPUT/OUTPUT SIGNAL CHART
POWER WINDOW OPERATION
• Power window system is operable during the retained power operation tim

PWC-6
< FUNCTION DIAGNOSIS >
POWER WINDOW SYSTEM
REAR POWER WINDOW CONTROL
INPUT/OUTPUT SIGNAL CHART
POWER WINDOW OPERATION
• Power window system is operable during the retained power operation timer after turning ignition switch ON
and OFF.
• Main power window and door lock/unlock switch can open/close all windows.
• Power window and door lock unlock switch RH & rear power window switches LH and RH can open/close the corresponding windows.
REAR POWER VENT WINDOW OPERATION
• Rear power vent window system is operable during the retained power operation timer after turning ignitionswitch ON and OFF.
• Rear power vent window switch can open/close the rear power vent window LH and RH.
POWER WINDOW AUTO-OPERATION
• AUTO UP/DOWN operation can be performed when main power window and door lock/unlock switch or
power window and door lock/unlock switch RH turns to AUTO.
• Main power window and door lock/unlock switch controls rear power window LH/RH auto-operation.
• Encoder continues detecting the movement of power window motor and transmits to front power window
switch LH/RH or rear power window control unit LH/RH as the encoder pulse signal while power window
motor is operating.
• Front power window switch LH/RH or rear power window control unit LH/RH reads the changes of encoder signal and stops AUTO operation when door glass is at fully opened/closed position.
• Power window motor is operable in case encoder is malfunctioning.
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.
• When timer time passes. (45 seconds)
POWER WINDOW LOCK
The power window lock is designed to lock operation of all windows except for front door window LH.
When in the lock position, the power window lock signal is transmitted to power window and door lock/unlock
switch RH and rear power window control unit LH/RH by power window serial link. This prevents the power
window motor from operating.
Item Input signal to front power window
switch Front power window switch
function Actuator
Power window and
door lock/unlock
switch RH Front power window motor RH UP/
DOWN signal
Power window control Front power window motor RH
Encoder Encoder pulse signal
BCM RAP signal
Item Input signal to front power window
switch Front power window switch
function Actuator
Main power window
and door lock/un-
lock switch Rear power window motor LH/RH UP/
DOWN signal
Power window control Rear power window motor LH/RH
Rear power window
switch LH/RH
Rear power window motor LH/RH UP/
DOWN signal
Rear power window
control unit LH/RH Rear power window
motor control LH
RH UP/DOWN signal
Encoder Encoder pulse signal
BCM Power window serial link signal
Revision: March 2010 2008 QX56

Page 2848 of 4083

INFINITI QX56 2008 Factory Service Manual POWER WINDOW SYSTEMPWC-7
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ANTI-PINCH OPERATION
• Pinch foreign material in the door glass during AUTO-U P operation, and it is the anti-pinch

POWER WINDOW SYSTEMPWC-7
< FUNCTION DIAGNOSIS >
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ANTI-PINCH OPERATION
• Pinch foreign material in the door glass during AUTO-U P operation, and it is the anti-pinch function that low-
ers the door glass 150 mm (5.91 in) or 2 seconds when detected.
• Encoder continues detecting the movement of power window motor and transmits to power window switch
as the encoder pulse signal while power window motor is operating.
• Resistance is applied to the power window motor rotation that changes the frequency of encoder pulse sig-
nal if foreign material is trapped in the door glass.
• Front power window switch LH/RH and rear power window control unit LH/RH controls to lower the window glass for 150 mm (5.91 in) or 2 seconds after it detects encoder 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.
KEY CYLINDER SWITCH OPERATION
Hold the door key cylinder to the LOCK or UNLOCK dire ction for more than 1 second to OPEN or CLOSE front
power windows when ignition switch is OFF. In addition, it stops when key position is moved to NEUTRAL
when operating.
OPERATION CONDITION
• Ignition switch OFF
• Hold door key cylinder to LOCK position for more than 1 second to perform CLOSE operation of the door glass.
• Hold door key cylinder to UNLOCK position for more than 1 second to perform OPEN operation of the door glass.
KEYLESS POWER WINDOW DOWN OPERATION
Front power windows open when the unlock button on Intelligent Key is activated and kept pressed for more
than 3
(NOTE) seconds with the ignition switch OFF. The windows keep opening if the unlock button is continu-
ously pressed.
The power window opening stops when the following operations are performed:
• When the unlock button is kept pressed 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 is activated, ke yless power window down function cannot be operated.
NOTE:
Keyless power window down operation mode can be changed by “PW DOWN SET” mode in “WORK SUP-
PORT”. Refer to SEC-22, "
CONSULT-III Function (INTELLIGENT KEY)".
NOTE:
Use CONSULT-III to change settings.
MODE1 (3sec)/MODE2 (OFF)/MODE3 (5sec)
Revision: March 2010 2008 QX56

Page 2849 of 4083

INFINITI QX56 2008 Factory Service Manual PWC-8
< FUNCTION DIAGNOSIS >
POWER WINDOW SYSTEM
Component Parts Location
INFOID:0000000001735646
Component DescriptionINFOID:0000000001735647
POWER WINDOW ANTI-PINCH SYSTEM
LIIA2715E
1. A. Steering c

Page 2850 of 4083

INFINITI QX56 2008 Factory Service Manual POWER WINDOW SYSTEMPWC-9
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Front power window motor LH • Integrates the ENCODER POWER and WINDOW MOTOR.
• Starts operating with signals from m

Page 2851 of 4083

INFINITI QX56 2008 Factory Service Manual PWC-10
< FUNCTION DIAGNOSIS >
DIAGNOSIS SYSTEM (BCM)
DIAGNOSIS SYSTEM (BCM)
COMMON ITEM
COMMON ITEM : CONSULT-III Function (BCM - COMMON ITEM)INFOID:0000000004874941
APPLICATION ITEM
CONSULT-III perfo

Page 2853 of 4083

INFINITI QX56 2008 Factory Service Manual PWC-12
< COMPONENT DIAGNOSIS >
POWER SUPPLY AND GROUND CIRCUIT
COMPONENT DIAGNOSIS
POWER SUPPLY AND GROUND CIRCUIT
POWER WINDOW MAIN SWITCH
POWER WINDOW MAIN SWITCH : DescriptionINFOID:000000000173565

Page 2854 of 4083

INFINITI QX56 2008 Factory Service Manual POWER SUPPLY AND GROUND CIRCUITPWC-13
< COMPONENT DIAGNOSIS >
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Is the inspection result normal?
YES >> GO TO 4
NO >> Repair or replace harness.
3. CHECK GROUND CIRCUIT

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