2009 INFINITI QX56 lock

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Page 788 of 4171

INFINITI QX56 2009 Factory Service Manual DEF-20
< ECU DIAGNOSIS >
BCM (BODY CONTROL MODULE)
Te r m i n a lWire
color Signal name Signal
input/
output Measuring condition
Reference value or waveform
(Approx.)
Ignition
switch Operation or c

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INFINITI QX56 2009 Factory Service Manual BCM (BODY CONTROL MODULE)DEF-21
< ECU DIAGNOSIS >
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19 V/W Remote keyless entry
receiver (power sup-
ply) Output OFF Ignition switch OFF
20 G/W Remote keyless entry
re

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INFINITI QX56 2009 Factory Service Manual BCM (BODY CONTROL MODULE)DEF-23
< ECU DIAGNOSIS >
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44 O Rear wiper auto stop
switch 1 Input ONRise up position (rear wiper
arm on stopper)
0V
A Position (full clockwi

Page 792 of 4171

INFINITI QX56 2009 Factory Service Manual DEF-24
< ECU DIAGNOSIS >
BCM (BODY CONTROL MODULE)
58 W/R Optical sensorInput ONWhen optical sensor is illumi-
nated
3.1V or more
When optical sensor is not illu-
minated 0.6V or less
59 G Front door

Page 809 of 4171

INFINITI QX56 2009 Factory Service Manual PRECAUTIONSDEF-41
< PRECAUTION >
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:00000000058

PRECAUTIONSDEF-41
< PRECAUTION >
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000005855808
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.
Handling for Adhesive and PrimerINFOID:0000000003776363
• Do not use an adhesive which is past its usable date. Shelf life of this product is limited to six months afterthe date of manufacture. Carefully adhere to the ex piration or manufacture date printed on the box.
• Keep primers and adhesive in a cool, dry place. I deally, 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.
Precaution Necessary for Steering Wheel Rotation After Battery Disconnect
INFOID:0000000005855987
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.
Revision: December 20092009 QX56

Page 810 of 4171

INFINITI QX56 2009 Factory Service Manual DEF-42
< PRECAUTION >
PRECAUTIONS
If steering wheel rotation is required when battery power is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Conn

Page 813 of 4171

INFINITI QX56 2009 Factory Service Manual DLK-1
BODY EXTERIOR, DOORS, ROOF & VEHICLE SECURITY
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SECTION DLK
A
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DLK
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CONTENTS
DOOR & LOCK
WITH INTELLIGENT KEY SYSTEM
BASIC INSPECTION ....... ............................

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
Revision: December 20092009 QX56

Page 814 of 4171

INFINITI QX56 2009 Factory Service Manual DLK-2
System Diagram .....................................................47
System Description .................................................47
Component Parts Location ..........................

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) .........................................................
52
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
INSIDE KEY ANTENNA 1 (REAR OF CEN-
TER CONSOLE) ............................................. ...
60
Description ........................................................... ...60
Component Function Check .................................60
Diagnosis Procedure ..............................................60
INSIDE KEY ANTENNA 2 (LUGGAGE COM-
PARTMENT) ......................................................
62
Description ........................................................... ...62
Component Function Check .................................62
Diagnosis Procedure ..............................................62
INSIDE KEY ANTENNA 3 (FRONT OF CEN-
TER CONSOLE) ................................................
64
Description ........................................................... ...64
Component Function Check .................................64
Diagnosis Procedure ..............................................64
INSIDE KEY ANTENNA 4 (OVERHEAD CON-
SOLE AREA) .....................................................
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 .......................................................... ...69
BACK DOOR : Diagnosis Procedure ......................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 ............................................84
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
Revision: December 20092009 QX56

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