2009 INFINITI QX56 door lock

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DOOR ............................................................. ..234
Fitting Adjustment ............................................... ..234
Removal and Installation .......................................235
Back Door Stay Disposal .................................... ..237
FRONT DOOR LOCK .......................................238
Component Structure .......................................... ..238
Removal and Installation .......................................238
Disassembly and Assembly ................................ ..240
REAR DOOR LOCK ........................................242
Component Structure .......................................... ..242
Removal and Installation .......................................242
BACK DOOR LOCK .......................................243
Power Back Door Opener .................................... ..243
Door Lock Assembly ..............................................244
Revision: December 20092009 QX56

DLK-10
< FUNCTION DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
AUTOMATIC DOOR LOCKS
FUNCTION DIAGNOSIS
AUTOMATIC DOOR LOCKS
System DiagramINFOID:0000000004190626
System DescriptionINFOID:0000000004190627
DOOR LOCK FUNCTION
• The door lock and unlock switch (driver side) is built into power window main switch.
• The door lock and unlock switch (passenger side) is on door trim.
• Interlocked with the locking operation of door lock and
unlock switch, door lock actuators of all doors are
locked.
• Interlocked with the unlocking operation of door lock and unlock switch, door lock actuators of all doors are
unlocked.
Door Key Cylinder
• With the door key inserted in the door key cylinder on driver side, turning it to “LOCK”, will lock door lock
actuator of all doors.
• With the door key inserted in the door key cylinder on driver side, turning it to “UNLOCK” onc\
e unlocks the driver side door lock actuator; turning it to “UNLOCK” again within 5 seconds after the first unlock operation
unlocks all of the other doors. - (SELECTIVE UNLOCK OPERATION)
Selective unlock operation mode can be changed usi ng “DOOR LOCK-UNLOCK SET” mode in “WORK SUP-
PORT”. Refer to DLK-52, "
DOOR LOCK : CONSULT-III Function (BCM - DOOR LOCK)".
AUTOMATIC DOOR LOCKS (LOCK OPERATION)
The automatic door locks function is the function that locks all doors linked with the vehicle speed.
Vehicle Speed Sensing Auto Door Lock*1
All doors are locked when the vehicle speed reaches 24 km/h (15 MPH) or more.
BCM outputs the lock signal to all door lock actuators when it detects that the ignition switch is turned ON, all
doors are closed and the vehicle speed received from the combination meter via CAN communication
becomes 15 MPH (24 km/h) or more.
ALKIA1482GB
Input SingleFunction Actuator
Door lock/unlock switch Door lock/unlock signal Door lock function
Each door lock actuator
Door key cylinder switch
Each door switch
Door open/close signal
Key reminder function
Combination meter Warning buzzer signal
Vehicle speed signal
Automatic door lock/unlock
function
TCM Shift position signal
Revision: December 20092009 QX56

AUTOMATIC DOOR LOCKSDLK-11
< FUNCTION DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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If a door is opened and closed at any time during one ignition cycle (O\
FF → ON), even after initial auto door
lock has taken place, the BCM will relock all doors w hen the vehicle speed reaches 24 km/h (15 MPH) or more
again.
Setting change of Automatic Door Locks (LOCK) Function
The unlock operation setting of the aut omatic door locks function can be changed.
With CONSULT-III
The ON/OFF switching of the automatic door locks (LOCK) function and the type selection of the automatic
door locks (LOCK) function can be performed at the WO RK SUPPORT setting of CONSULT-III. Refer to DLK-
52, "DOOR LOCK : CONSULT-III Function (BCM - DOOR LOCK)".
Without CONSULT- III
The automatic door locks (LOCK) function can be swit ched ON/OFF by performing the following operation.
1. Close all doors (door switch OFF).
2. Turn ignition switch ON.
3. Within 20 seconds of turning the ignition switch ON, press and hold the door lock and unlock switch to the LOCK position for more than 5 seconds.
4. The switching is completed when the hazard lamps blink.
5. The ignition switch must be turned OFF and ON again between each setting change.
AUTOMATIC DOOR LOCKS (UNLOCK OPERATION)
The automatic door locks (UNLOCK) function is the function that unlocks all doors linked with the key position.
IGN OFF Interlock Door Unlock*1
All doors are unlocked when the power supply position is changed from ON to OFF.
BCM outputs the unlock signal to all door lock actuator s when it detects that the power supply position is
changed from ignition switch ON to OFF.
Setting change of Automatic Door Locks (UNLOCK) Function
The unlock operation setting of the aut omatic door locks function can be changed.
With CONSULT-III
The ON/OFF switching of the automatic door locks (UNL OCK) function and the type selection of the automatic
door locks (UNLOCK) function can be performed at the WORK SUPPORT setting of CONSULT-III. Refer to
DLK-52, "
DOOR LOCK : CONSULT-III Function (BCM - DOOR LOCK)".
Without CONSULT- III
The automatic door locks (UNLOCK) function can be sw itched ON/OFF by performing the following operation.
1. Close all doors (door switch OFF).
2. Turn ignition switch ON.
3. Within 20 seconds of turning the ignition switch ON, press and hold the door lock and unlock switch to the UNLOCK position for more than 5 seconds.
4. The switching is completed when the hazard lamps blink.
5. The ignition switch must be turned OFF and ON again between each setting change.
*1: This function is set to ON before delivery.
OFF → ON : 2 blinks
ON → OFF : 1 blink
OFF → ON : 2 blinks
ON → OFF : 1 blink
Revision: December 20092009 QX56

DLK-12
< FUNCTION DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
AUTOMATIC DOOR LOCKS
Component Parts Location
INFOID:0000000004190628
Component DescriptionINFOID:0000000004190629
ALKIA1483ZZ
1. Key switch and ignition knob switch M12 2. BCM M18, M19, M20 3. Combination meter M24
4. TCM F9 5. Front door lock assembly LH (key cyl-
inder switch) D14
Front door lock assembly RH D114 6. Main power window and door lock/
unlock switch D7, D8
7. Front door switch LH B8 RH B108 8. Rear door switch LH B18
RH B116 9. Back door latch (door ajar switch)
D503
10. Rear door lock actuator LH D205 RH D305 11. Glass hatch lock actuator D711 12. Back door and glass hatch switch
assembly (glass hatch switch) D706
Item Function
BCM Controls the door lock function and room lamp function.
Door lock and unlock switch Input lock or unlock signal to BCM.
Revision: December 20092009 QX56

AUTOMATIC DOOR LOCKSDLK-13
< FUNCTION DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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Door lock actuator Output lock/unlock signal from BCM and locks/unlocks each door.
Door switch Input door open/close condition to BCM.
Door key cylinder switch • Input lock or unlock signal to main power window and door lock/unlock switch.
• Main power window and door lock/unlock switch transmits door lock/unlock signal to BCM.
Combination meter • Receive buzzer signal from BCM via CAN communication line, and sounds the buzzer.
• Transmits vehicle speed signal to CAN communication line.
TCM Transmit shift position signal to BCM via CAN communication line.
Item
Function
Revision: December 20092009 QX56

DLK-14
< FUNCTION DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
DOOR LOCK FUNCTION
DOOR LOCK FUNCTION
DOOR LOCK AND UNLOCK SWITCH
DOOR LOCK AND UNLOCK SWITCH : System DiagramINFOID:0000000003775675
DOOR LOCK AND UNLOCK SW
ITCH : System DescriptionINFOID:0000000003775676
DOOR LOCK FUNCTION
Functions Available by Operating the Door Lock an d Unlock Switches on Driver Door and Passenger Door
• Interlocked with the locking operation of door lock and unlock switch, door lock actuators of all door lock
actuators are locked.
• Interlocked with the unlocking operation of door lock and unlock switch, door lock actuators of all door lock
actuators are unlocked.
Functions Available by Operating the Key Cylinder Switch on Driver Door
• Interlocked with the locking operation of door key cyli nder, door lock actuators of all door lock actuators are
locked.
Selective Unlock Operation
• When door key cylinder is unlocked, door lo ck actuator driver side is unlocked.
• When door key cylinder is unlocked for the second time within 5 seconds after the first operation, door lock actuators on all doors are unlocked.
Select unlock operation mode can be changed using DOOR LOCK-UNLOCK SET mode in “WORK SUP-
PORT”. Refer to DLK-52, "
DOOR LOCK : CONSULT-III Function (BCM - DOOR LOCK)".
Key Reminder System
Refer to DLK-44, "System Description".
ALKIA0703GB
Switch Input/output signal to BCM BCM functionActuator
Main power window and door
lock/unlock switch Door lock/unlock signal Door lock/unlock control Door lock actuator
Power window and door lock/
unlock switch
Door key cylinder switch
Revision: December 20092009 QX56

DOOR LOCK FUNCTIONDLK-15
< FUNCTION DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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DOOR LOCK AND UNLOCK SWITCH : Component Parts LocationINFOID:0000000003775677
DOOR LOCK AND UNLOCK SWITCH : Component DescriptionINFOID:0000000003775678
1. Key switch and ignition knob switch M12 2. BCM M18, M19, M20 (view with instrument panel removed)3. Front door lock assembly LH (key
cylinder switch) D14
Front door lock actuator RH D114
4. Main power window and door lock/un- lock switch D7, D8 5. Front door switch
LH B8
RH B108 6. Rear door switch
LH B18
RH B116
7. Power window and door lock/unlock switch RH D105 8. Back door latch (door ajar switch)
D503 9. Rear door lock actuator
LH D205
RH D305
10. Passenger select unlock relay M7 (view with instrument panel LH removed) 11. Glass hatch lock actuator D711 12. Back door and glass hatch switch
assembly (glass hatch switch) D706
ALKIA0964ZZ
Item Function
BCM Controls the door lock function and room lamp function.
Door lock and unlock switch Transmits lock or unlock signal to BCM.
Door lock actuator Receives lock/unlock signal from BCM and locks/unlocks each door.
Revision: December 20092009 QX56

DLK-16
< FUNCTION DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
DOOR LOCK FUNCTION
DOOR REQUEST SWITCH
DOOR REQUEST SWITCH : System DiagramINFOID:0000000003775679
DOOR REQUEST SWITCH : System DescriptionINFOID:0000000003775680
Only when pressing the request switch, it is possible
to lock and unlock the door by carrying the Intelligent
Key.
• The Intelligent Key system is a system that makes it possible to lock and unlock the door locks (door lock/
unlock function) by carrying the Intelligent Key, which operates based on the results of electronic ID verifica-
tion using two-way communications between the Intelligent Key and the vehicle (BCM).
CAUTION:
The driver should always carry the Intelligent Key
• If an action that does not meet the operating conditions of the Intelligent Key system is taken, the buzzer
goes off to inform the driver (Warning chime function).
• When a door lock is locked or unlocked with request switch or remote controller button operation, the hazard
lamps flash and the Intelligent Key warning buzzer or horn sounds (Hazard and buzzer/horn reminder func-
tion).
• The settings for each function can be changed with the CONSULT-III.
• If an Intelligent Key is lost, a new Intelligent Key can be registered. A maximum of 4 Intelligent Keys can be
registered.
• It is possible to perform a diagnosis on the system and register an Intelligent Key with the CONSULT-III.
OPERATION DESCRIPTION/DOOR LOCK/UNLOCK
• When the BCM detects that each door request switch is pressed, it starts the outside key antenna and inside
key antenna corresponding to the pressed door request swit ch and transmits the request signal to the Intelli-
gent Key. And then, check that t he Intelligent Key is near the door.
• If the Intelligent Key is within the outside key ant enna detection area, it receives the request signal and
transmits the key ID signal to the BCM via remote keyless entry receiver.
• BCM receives the key ID signal and compares it with the registered key ID.
• BCM sends the door lock/unlock signal and sounds Intelli gent Key buzzer warning (lock: 2 times, unlock: 1
time) at the same time as a reminder.
OPERATION CONDITION
If the following conditions are not satisfied, door lock/unlock operation is not performed even if the request
switch is operated.
Door switch Transmits door open/close condition to BCM.
Passenger select unlock relay Enables or disables the unlocking of rear doors when this Intelligent Key option is selected. Item
Function
ALKIA0704GB
Revision: December 20092009 QX56