2010 INFINITI QX56 lock

PRECAUTIONSDEF-43
< PRECAUTION >
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000005367609
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and w hether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SR and SB section of this Service Man-
ual.
WARNING:
• To avoid rendering the SRS inoper ative, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipm ent on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Un it or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or el ectric power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers, always switch the Ignition OFF, disconnect the battery, and wait at least 3 minutes before performing any service.
Precaution Necessary for Steering Wheel Rotation After Battery Disconnect
INFOID:0000000005367612
NOTE:
• This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT SYS-
TEM).
• Remove and install all control units after disconnecti ng both battery cables with the ignition knob in the
″ LOCK ″ position.
• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NATS , an electrically controlled steering lock mech-
anism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery power is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables. NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC ″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be
rotated.
4. Perform the necessary repair operation.
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DEF-44
< PRECAUTION >
PRECAUTIONS
5. When the repair work is completed, return the ignition switch to the ″LOCK ″ position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
6. Perform a self-diagnosis check of a ll control units using CONSULT-III.
Handling for Adhesive and PrimerINFOID:0000000005146856
• Do not use an adhesive which is past its usable date. Shel f life of this product is limited to six months after
the date of manufacture. Carefully adhere to the expiration or manufacture date printed on the box.
• Keep primers and adhesive in a cool, dry place. Ideally, they should be stored in a refrigerator.
• Open the seal of the primer and adhesive just before application. Discard the remainder.
• Before application, be sure to shake the primer container to stir the contents. If any floating material is found, do not use it.
• If any primer or adhesive contacts the skin, wipe it off with gasoline or equivalent and wash the skin with
soap.
• When using primer and adhesive, always observe the precautions in the instruction manual.
Revision: April 20092010 QX56

DLK-1
BODY EXTERIOR, DOORS, ROOF & VEHICLE SECURITY
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CONTENTS
DOOR & LOCK
WITH INTELLIGENT KEY SYSTEM
BASIC INSPECTION ....... .............................
6
DIAGNOSIS AND REPAIR WORKFLOW ..... .....6
Work Flow ........................................................... ......6
INSPECTION AND ADJUSTMENT .....................9
ADDITIONAL SERVICE WHEN REMOVING BAT-
TERY NEGATIVE TERMINAL ............................... ......
9
ADDITIONAL SERVICE WHEN REMOVING
BATTERY NEGATIVE TERMINAL : Description ......
9
ADDITIONAL SERVICE WHEN REMOVING
BATTERY NEGATIVE TERMINAL : Special Re-
pair Requirement ................................................. ......
9
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT .................................................... ......
9
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT : Description ..................................
9
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT : Special Repair Requirement .......
9
FUNCTION DIAGNOSIS ..............................10
AUTOMATIC DOOR LOCKS ......................... ....10
System Diagram .................................................. ....10
System Description .................................................10
Component Parts Location ....................................12
Component Description ..........................................12
DOOR LOCK FUNCTION ..................................14
DOOR LOCK AND UNLOCK SWITCH ................. ....14
DOOR LOCK AND UNLOCK SWITCH : System
Diagram ...................................................................
14
DOOR LOCK AND UNLOCK SWITCH : System
Description ..............................................................
14
DOOR LOCK AND UNLOCK SWITCH :
Component Parts Location ....................................
15
DOOR LOCK AND UNLOCK SWITCH :
Component Description ..........................................
15
DOOR REQUEST SWITCH ................................... ....16
DOOR REQUEST SWITCH : System Diagram .......16
DOOR REQUEST SWITCH : System Description ....16
DOOR REQUEST SWITCH :
Component Parts Location ....................................
19
DOOR REQUEST SWITCH :
Component Description ..........................................
21
INTELLIGENT KEY ................................................ ....21
INTELLIGENT KEY : System Diagram ....................21
INTELLIGENT KEY : System Description ...............21
INTELLIGENT KEY : Component Parts Location ....24
INTELLIGENT KEY : Component Description ........25
BACK DOOR OPENER FUNCTION .................27
BACK DOOR OPENER SWITCH .......................... ....27
BACK DOOR OPENER SWITCH : System Dia-
gram ........................................................................
27
BACK DOOR OPENER SWITCH : System De-
scription ...................................................................
27
BACK DOOR OPENER SWITCH :
Component Parts Location ....................................
32
BACK DOOR OPENER SWITCH :
Component Description ..........................................
32
INTELLIGENT KEY ................................................ ....33
INTELLIGENT KEY : System Diagram ....................33
INTELLIGENT KEY : System Description ...............33
INTELLIGENT KEY : Component Parts Location ....35
INTELLIGENT KEY : Component Description ........36
WARNING FUNCTION ......................................38
System Description ..................................................38
Component Parts Location ....................................42
KEY REMINDER FUNCTION ............................44
System Description ..................................................44
Component Parts Location ....................................45
HAZARD AND BUZZER REMINDER FUNC-
TION ..................................................................
47
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DLK-2
System Diagram .....................................................47
System Description .................................................47
Component Parts Location ...................................48
Component Description .........................................50
HOMELINK UNIVERSAL TRANSCEIVER ........51
Component Description ....................................... ...51
DIAGNOSIS SYSTEM (BCM) ............................52
COMMON ITEM ..................................................... ...52
COMMON ITEM : CONSULT-III Function (BCM -
COMMON ITEM) ................................................. ...
52
DOOR LOCK .......................................................... ...52
DOOR LOCK : CONSULT-III Function (BCM -
DOOR LOCK) .........................................................
53
MULTIREMOTE ENT ............................................. ...53
MULTIREMOTE ENT : CONSULT-III Function
(BCM - MULTIREMOTE ENT) ................................
53
INTELLIGENT KEY ................................................ ...55
INTELLIGENT KEY : CONSULT-III Function
(BCM - INTELLIGENT KEY) ...................................
55
DIAGNOSIS SYSTEM (INTELLIGENT KEY
UNIT) ............................................................... ...
56
CONSULT-III Function (INTELLIGENT KEY) ...... ...56
COMPONENT DIAGNOSIS ........................58
U1000 CAN COMM CIRCUIT ......................... ...58
Description ........................................................... ...58
DTC Logic ...............................................................58
Diagnosis Procedure ..............................................58
U1010 CONTROL UNIT (CAN) .........................59
DTC Logic ............................................................ ...59
Diagnosis Procedure ..............................................59
Special Repair Requirement ...................................59
CENTER CONSOLE AREA ANTENNA
(REAR) ............................................................ ...
60
Description ........................................................... ...60
Component Function Check .................................60
Diagnosis Procedure ..............................................60
LUGGAGE AREA ANTENNA ...........................62
Description ..............................................................62
Component Function Check .................................62
Diagnosis Procedure ..............................................62
CENTER CONSOLE AREA ANTENNA
(FRONT) .............................................................
64
Description ........................................................... ...64
Component Function Check .................................64
Diagnosis Procedure ..............................................64
OVERHEAD CONSOLE AREA ANTENNA ......66
Description ........................................................... ...66
Component Function Check .................................66
Diagnosis Procedure ............................................ ...66
POWER SUPPLY AND GROUND CIRCUIT .....68
INTELLIGENT KEY UNIT ....................................... ...68
INTELLIGENT KEY UNIT : Diagnosis Procedure ...68
BCM (BODY CONTROL MODULE) ..........................68
BCM (BODY CONTROL MODULE) : Diagnosis
Procedure ...............................................................
68
BACK DOOR CONTROL UNIT .............................. ...69
BACK DOOR CONTROL UNIT : Diagnosis Proce-
dure ...................................................................... ...
69
DOOR SWITCH .................................................71
Description ........................................................... ...71
Component Function Check ..................................71
Diagnosis Procedure ...............................................71
DOOR LOCK AND UNLOCK SWITCH .............74
DRIVER SIDE ......................................................... ...74
DRIVER SIDE : Description ....................................74
DRIVER SIDE : Component Function Check ........74
DRIVER SIDE : Diagnosis Procedure .....................74
PASSENGER SIDE ...................................................76
PASSENGER SIDE : Descripti on ...........................76
PASSENGER SIDE :
Component Function Check ............................... ...
76
PASSENGER SIDE : Diagnosis Procedure ............76
KEY CYLINDER SWITCH .................................79
Description ........................................................... ...79
Component Function Check ...................................79
Diagnosis Procedure ...............................................79
FRONT DOOR LOCK ACTUATOR LH (DOOR
UNLOCK SENSOR) ..........................................
81
Description ........................................................... ...81
Component Function Check ..................................81
Diagnosis Procedure ...............................................81
Component Inspection ............................................82
DOOR REQUEST SWITCH ...............................83
Description ..............................................................83
Component Function Check ..................................83
Diagnosis Procedure ...............................................83
Component Inspection ............................................85
DOOR LOCK ACTUATOR ................................86
DRIVER SIDE ......................................................... ...86
DRIVER SIDE : Description ....................................86
DRIVER SIDE : Component Function Check ........86
DRIVER SIDE : Diagnosis Procedure .....................86
PASSENGER SIDE ...................................................87
PASSENGER SIDE : Descripti on ...........................87
PASSENGER SIDE :
Component Function Check ............................... ...
87
PASSENGER SIDE : Diagnosis Procedure ............87
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DLK-3
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REAR LH ...............................................................
....
88
REAR LH : Description ............................................88
REAR LH : Component Function Check ...............88
REAR LH : Diagnosis Procedure ............................88
REAR RH ............................................................... ....89
REAR RH : Description ...........................................90
REAR RH : Component Function Check ...............90
REAR RH : Diagnosis Procedure ............................90
BACK DOOR ......................................................... ....91
BACK DOOR : Description ......................................91
GLASS HATCH LOCK ACTUATOR ..................92
Diagnosis Procedure ...............................................92
PASSENGER SELECT UNLOCK RELAY .........93
Description .......................................................... ....93
Component Function Check ....................................93
Diagnosis Procedure ...............................................93
INTELLIGENT KEY WARNING BUZZER ..........95
Description .......................................................... ....95
Component Function Check ..................................95
Diagnosis Procedure ...............................................95
Component Inspection ............................................96
OUTSIDE KEY ANTENNA .................................97
Description .......................................................... ....97
Component Function Check ..................................97
Diagnosis Procedure ...............................................97
STEERING LOCK UNIT .....................................99
Diagnosis Procedure ........................................... ....99
A/T SHIFT SELECTOR (PARK POSITION
SWITCH) ...........................................................
101
Diagnosis Procedure ........................................... ..101
REMOTE KEYLESS ENTRY RECEIVER ........103
Description .......................................................... ..103
Component Function Check ................................103
Diagnosis Procedure .............................................103
INTELLIGENT KEY BATTERY AND FUNC-
TION .................................................................
106
Description .......................................................... ..106
Component Function Check ................................106
Diagnosis Procedure .............................................106
HORN FUNCTION ............................................108
Description .......................................................... ..108
Component Function Check ................................108
Diagnosis Procedure ............................................108
COMBINATION METER DISPLAY FUNC-
TION .................................................................
110
Description .......................................................... ..110
Component Function Check ................................110
Diagnosis Procedure .............................................110
WARNING CHIME FUNCTION ........................111
Description ........................................................... ..111
Component Function Check ................................111
Diagnosis Procedure .............................................111
HAZARD FUNCTION ......................................112
Description .............................................................112
Component Function Check ................................112
Diagnosis Procedure .............................................112
KEY SWITCH (INTELLIGENT KEY UNIT IN-
PUT) ................................................................
113
Diagnosis Procedure .............................................113
KEY SWITCH (BCM INPUT) ...........................115
Diagnosis Procedure .............................................115
IGNITION KNOB SWITCH ..............................116
Diagnosis Procedure .............................................116
HEADLAMP FUNCTION .................................118
Diagnosis Procedure .............................................118
MAP LAMP AND IGNITION KEYHOLE ILLU-
MINATION FUNCTION ...................................
119
Diagnosis Procedure .............................................119
KEYFOB ID SET UP WITH CONSULT-III ......120
ID Code Entry Procedure ......................................120
KEYFOB ID SET UP WITHOUT CONSULT-III .121
ID Code Entry Procedure .................................... ..121
AUTOMATIC BACK DOOR SELF-DIAGNO-
SIS PROCEDURE ...........................................
123
Self-Diagnosis Procedure ......................................123
POWER LIFTGATE SWITCH FUNCTION ......125
Diagnosis Procedure ........................................... ..125
GLASS HATCH SWITCH ................................127
Diagnosis Procedure .............................................127
GLASS HATCH AJAR SWITCH .....................129
Diagnosis Procedure .............................................129
BACK DOOR CLOSE (CLOSE) SWITCH
SYSTEM ..........................................................
131
Diagnosis Procedure ........................................... ..131
BACK DOOR CLOSE (CANCEL) SWITCH
SYSTEM ..........................................................
133
Diagnosis Procedure ........................................... ..133
PINCH STRIP SYSTEM ..................................135
Diagnosis Procedure .............................................135
BACK DOOR WARNING CHIME SYSTEM ....136
Diagnosis Procedure .............................................136
HALF-LATCH SWITCH SYSTEM ...................137
Diagnosis Procedure .............................................137
BACK DOOR OPEN SWITCH SYSTEM ........138
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DLK-4
Diagnosis Procedure .............................................138
BACK DOOR CLOSE SWITCH SYSTEM .......139
Diagnosis Procedure ........................................... ..139
BACK DOOR SWITCH ....................................140
Diagnosis Procedure ........................................... ..140
CINCH LATCH MOTOR SYSTEM ...................141
Diagnosis Procedure ........................................... ..141
INTELLIGENT KEY UNIT POWER BACK
DOOR INPUT SIGNAL ....................................
142
Description ........................................................... ..142
Diagnosis Procedure .............................................142
INTELLIGENT KEY UNIT POWER BACK
DOOR OUTPUT SIGNAL ................................
143
Description ........................................................... ..143
Diagnosis Procedure .............................................143
HOMELINK UNIVERSAL TRANSCEIVER ......144
Wiring Diagram .................................................... ..144
Description .............................................................145
Component Function Check ................................146
Diagnosis Procedure .............................................146
ECU DIAGNOSIS ..................................... ..148
BCM (BODY CONTROL MODULE) ............... .148
Reference Value .................................................. ..148
Terminal Layout .....................................................151
Physical Values .....................................................151
Wiring Diagram — POWER DOOR LOCK SYS-
TEM — ..................................................................
157
Fail Safe ................................................................170
DTC Inspection Priority Chart .............................171
DTC Index ........................................................... ..171
INTELLIGENT KEY UNIT ................................173
Reference Value .................................................. ..173
Terminal Layout - Intelligent Key Unit ....................174
Physical Values - Intelligent Key Unit ....................174
Terminal Layout - Steering Lock Solenoid ........... ..177
Physical Values - Steering Lock Solenoid .............177
Wiring Diagram — INTELLIGENT KEY SYSTEM
— ...........................................................................
178
Fail Safe ................................................................195
DTC Inspection Priority Chart .............................196
DTC Index ........................................................... ..196
BACK DOOR CONTROL UNIT .......................197
Reference Value .................................................. ..197
Wiring Diagram—AUTOMATIC BACK DOOR
SYSTEM— ............................................................
199
Fail Safe .............................................................. ..209
SYMPTOM DIAGNOSIS ............................210
INTELLIGENT KEY SYSTEM SYMPTOMS ... .210
Symptom Table ................................................... ..210
DOOR LOCK FUNCTION SYMPTOMS ...........211
DOOR LOCK AND UNLOCK SWITCH .................. .211
DOOR LOCK AND UNLOCK SWITCH : Symptom
Table .....................................................................
211
INTELLIGENT KEY ................................................ .212
INTELLIGENT KEY : Symptom Table ..................212
BACK DOOR OPENER FUNCTION ................214
BACK DOOR OPENER SWITCH .......................... .214
BACK DOOR OPENER SWITCH : Symptom Ta-
ble ........................................................................ .
214
BACK DOOR HANDLE .......................................... .214
BACK DOOR HANDLE : Symptom Table .............215
INTELLIGENT KEY ................................................ .215
INTELLIGENT KEY : Symptom Table ..................215
WARNING FUNCTION SYMPTOMS ...............216
Symptom Table .................................................... .216
KEY REMINDER FUNCTION SYMPTOMS .....219
Symptom Table .................................................... .219
HAZARD FUNCTION ..................................... ..220
Symptom Table .................................................... .220
HORN FUNCTION ............................................221
Symptom Table .................................................... .221
HOMELINK UNIVERSAL TRANSCEIVER ......222
Symptom Table .................................................... .222
SQUEAK AND RATTLE TROUBLE DIAG-
NOSES ..............................................................
223
Work Flow ............................................................ .223
Inspection Procedure ............................................225
Diagnostic Worksheet ...........................................227
PRECAUTION ...........................................229
PRECAUTIONS .............................................. ..229
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" .............................................................. .
229
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ................................
229
Precaution for work ...............................................230
PREPARATION .........................................231
PREPARATION .............................................. ..231
Special Service Tool ............................................ .231
Commercial Service Tool ......................................232
ON-VEHICLE REPAIR ..............................233
HOOD ............................................................. ..233
Fitting Adjustment ................................................ .233
Removal and Installation of Hood Assembly ........234
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DLK-5
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Removal and Installation of Hood Lock Control ..
..
235
Hood Lock Control Inspection ...............................236
Hood Stay Disposal ............................................. ..236
DOOR ...............................................................238
Fitting Adjustment ............................................... ..238
Removal and Installation .......................................239
Back Door Stay Disposal .................................... ..241
FRONT DOOR LOCK .......................................242
Component Structure .......................................... ..242
Removal and Installation ..................................... ..242
Disassembly and Assembly ...................................244
REAR DOOR LOCK ........................................246
Component Structure ............................................246
Removal and Installation .......................................246
BACK DOOR LOCK .......................................247
Power Back Door Opener .................................... ..247
Door Lock Assembly ..............................................248
Revision: April 20092010 QX56

DLK-10
< FUNCTION DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
AUTOMATIC DOOR LOCKS
FUNCTION DIAGNOSIS
AUTOMATIC DOOR LOCKS
System DiagramINFOID:0000000005146867
System DescriptionINFOID:0000000005146868
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-53, "
DOOR LOCK : CONSULT-III Function (BCM - DOOR LOCK)".
AUTOMATIC DOOR LOCKS (LOCK OPERATION)
The interlock door lock 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: April 20092010 QX56