2009 INFINITI QX56 key

PRECAUTIONSINL-71
< PRECAUTION >
C
DE
F
G H
I
J
K
M A
B
INL
N
O P
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000005867732
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:0000000005867733
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.
Revision: December 20092009 QX56

INT-8
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000005864613
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity 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 inopera tive, 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 unintent ional activation of the system. For re moval of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipmen t on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harn esses can be identified 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 Unit or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or electri c 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 minu tes before performing any service.
Precaution Necessary for Steering W heel Rotation After Battery Disconnect
INFOID:0000000005864610
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 disconnecting 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 pow er 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.
Revision: December 20092009 QX56

IP-2
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000005867479
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity 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 inopera tive, 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 unintent ional activation of the system. For re moval of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipmen t on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harn esses can be identified 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 Unit or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or electri c 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 minu tes before performing any service.
Precaution Necessary for Steering W heel Rotation After Battery Disconnect
INFOID:0000000005867480
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 disconnecting 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 pow er 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.
Revision: December 20092009 QX56

INSTRUMENT PANEL ASSEMBLYIP-13
< ON-VEHICLE REPAIR >
C
DE
F
G H
I
K L
M A
B
IP
N
O P
Removal and InstallationINFOID:0000000003775422
REMOVAL
CAUTION:
Disconnect both the negative and positive battery terminals in advance.
1. Disconnect both negative and positive terminal s, then wait at least 3 minutes.
2. Remove front center console. Refer to IP-20, "
Removal and Installation".
3. Remove steering column assembly. Refer to ST-20, "
Removal and Installation".
4. Remove combination meter. Refer to MWI-102, "
Removal and Installation".
5. Remove instrument panel upper cover and disconnect rear sonar speaker (if equipped).
6. Remove cluster lid C. Refer to IP-16, "
Removal and Installation".
7. Remove display assembly. Refer to AV-168, "
Removal and Installation".
8. Remove instrument lower/upper panel RH and glove box. Refer to IP-17, "
Removal and Installation" and
IP-18, "
Removal and Installation".
9. Release the clips, disconnect the optical sensor harness and remove defroster grille.
10. Release the clips, disconnect the connectors and remove RH, LH, and center speakers.
11. Remove RH/LH front pillar finishers. Refer to INT-14, "
Removal and Installation".
12. Remove the passenger air bag module nuts and disconnect the connectors. Refer to SR-10, "
Removal
and Installation".
13. Disconnect remaining optional equipment connectors (if equipped).
14. Remove instrument panel and pad assembly screws.
15. Release instrument panel and pad assembly lifting rearward away from steering member, then carefully remove through front door opening.
1. Defroster grille 2. Center speaker grille3. Speaker center
4. Speaker grille outer 5. Speaker outer6. Instrument panel upper cover
7. Instrument panel and pad assembly 8. Side ventilator assembly LH 9. Combination meter
10. Instrument upper panel LH 11. Cluster lid A 12. Key cylinder escutcheon
13. Lower knee protector 14. Instrument lower panel LH 15. Steering column cover upper
16. Steering column cover lower 17. Cluster lid C lower 18. 4WD switch (if equipped)
19. Hazard switch 20. Cluster lid C21. Instrument lower cover RH
22. Fuse access cover 23. Glove box 24. Instrument lower panel RH
25. Audio switch RH 26. A/C and AV switch assembly 27. Audio unit
28. Audio switch LH 29. Center ventilator assembly LH 30. Display assembly
31. Center ventilator assembly RH 32. Side ventilator assembly RH 33. Instrument upper panel RH Metal clip Clip
ALJIA0083ZZ
Revision: December 20092009 QX56

CLUSTER LID AIP-15
< ON-VEHICLE REPAIR >
C
DE
F
G H
I
K L
M A
B
IP
N
O P
CLUSTER LID A
Exploded ViewINFOID:0000000003775423
Removal and InstallationINFOID:0000000003775424
REMOVAL
1. Release the clips and remove the screws, then disconnect the connectors and remove instrument lower panel LH.
2. Release the clips then remove instrument upper panel LH.
3. Remove the screws, then remove steering column cover upper and lower from steering column.
4. Remove key cylinder escutcheon from cluster lid A.
5. Release the clips and remove cluster lid A from instrument panel and pad assembly.
INSTALLATION
Installation is in the reverse order of removal.
ALJIA0076ZZ
1. Cluster lid A 2. Instrument upper panel LH3. Instrument lower panel LH
4. Key cylinder escutcheon 5. Steering column cover upper 6. Steering column cover lower
Metal clip ClipPawl
Revision: December 20092009 QX56

LAN-2
MAIN LINE BETWEEN TCM AND LASER
CIRCUIT .............................................................
63
Diagnosis Procedure ........................................... ...63
MAIN LINE BETWEEN LASER AND ICC CIR-
CUIT ...................................................................
64
Diagnosis Procedure ........................................... ...64
MAIN LINE BETWEEN ICC AND ADP CIR-
CUIT ...................................................................
65
Diagnosis Procedure ........................................... ...65
MAIN LINE BETWEEN ADP AND AV CIR-
CUIT ...................................................................
66
Diagnosis Procedure ........................................... ...66
MAIN LINE BETWEEN AV AND DLC CIR-
CUIT ...................................................................
67
Diagnosis Procedure ........................................... ...67
MAIN LINE BETWEEN DLC AND M&A CIR-
CUIT ...................................................................
68
Diagnosis Procedure ........................................... ...68
MAIN LINE BETWEEN M&A AND ABS CIR-
CUIT ...................................................................
69
Diagnosis Procedure ........................................... ...69
ECM BRANCH LINE CIRCUIT ..........................70
Diagnosis Procedure ........................................... ...70
TCM BRANCH LINE CIRCUIT ..........................71
Diagnosis Procedure ........................................... ...71
LASER BRANCH LINE CIRCUIT ......................72
Diagnosis Procedure ........................................... ...72
ICC BRANCH LINE CIRCUIT ............................73
Diagnosis Procedure ............................................ ...73
ADP BRANCH LINE CIRCUIT ..........................74
Diagnosis Procedure ............................................ ...74
AV BRANCH LINE CIRCUIT .............................75
Diagnosis Procedure ............................................ ...75
BCM BRANCH LINE CIRCUIT ..........................76
Diagnosis Procedure ............................................ ...76
DLC BRANCH LINE CIRCUIT ..........................77
Diagnosis Procedure ............................................ ...77
HVAC BRANCH LINE CIRCUIT ........................78
Diagnosis Procedure ............................................ ...78
I-KEY BRANCH LINE CIRCUIT ........................79
Diagnosis Procedure ............................................ ...79
M&A BRANCH LINE CIRCUIT ..........................80
Diagnosis Procedure ............................................ ...80
STRG BRANCH LINE CIRCUIT ........................81
Diagnosis Procedure ............................................ ...81
4WD BRANCH LINE CIRCUIT ..........................82
Diagnosis Procedure ............................................ ...82
ABS BRANCH LINE CIRCUIT ..........................83
Diagnosis Procedure ............................................ ...83
IPDM-E BRANCH LINE CIRCUIT .....................84
Diagnosis Procedure ............................................ ...84
CAN COMMUNICATION CIRCUIT ...................85
Diagnosis Procedure ............................................ ...85
Revision: December 20092009 QX56

LAN
DIAGNOSIS AND REPAIR WORKFLOWLAN-23
< BASIC INSPECTION > [CAN FUNDAMENTAL]
C
D
E
F
G H
I
J
K L
B A
O P
N
c. Reception item of “AV”: “UNKWN” is not indicated. This indicates normal communication between AV and
its receiving units. Do not draw any line.
d. Reception item of “BCM”: On “TCM”, “UNKWN” is indicated. This means BCM cannot receive the signal from TCM. Draw a line to indicate an error between BCM and TCM (line 2-d in the figure below).
e. Reception item of “EPS” and “I-KEY”: “UNKWN” is not indicated. This indicates normal communication between EPS and I-KEY and their receiv ing units. Do not draw any line.
NOTE:
PKID1215E
Revision: December 20092009 QX56

LAN-36
< HOW TO USE THIS MANUAL >[CAN]
HOW TO USE THIS SECTION
HOW TO USE THIS MANUAL
HOW TO USE THIS SECTION
CautionINFOID:0000000003894427
• This section describes information peculiar to a v
ehicle, sheets for trouble diagnosis, and inspection proce-
dures.
• For trouble diagnosis procedure, refer to LAN-14, "
Trouble Diagnosis Procedure".
Abbreviation ListINFOID:0000000003776444
Abbreviations in CAN communication signal chart, and the diagnosis sheet are as per the following list.
AbbreviationUnit nameSELECT SYSTEM
(CONSULT-III) CAN DIAG SUPPORT MNTR
(CONSULT-III)
4WD Transfer control unit ALL MODE AWD/4WDAWD/4WD
A-BAG Air bag diagnosis sensor unit AIR BAG—
ABS ABS actuator and electric unit (control unit) ABSVDC/TCS/ABS
ADP Driver seat control unit AUTO DRIVE POS.—
AV AV c o n t r o l u n i t M U LT I AVD I S P L AY
BCM BCM BCMBCM/SEC
DLC Data link connector ——
ECM ECM ENGINEECM
HVAC A/C auto amp. HVAC—
ICC ICC unit ICCICC
ICC/e4WD
I-KEY Intelligent Key unit INTELLIGENT KEYI-KEY
IPDM-E IPDM E/R IPDM E/RIPDM E/R
LASER ICC sensor —ICC SENSOR
M&A Combination meter METER/M&AMETER/M&A
STRG Steering angle sensor —STRG
TCM TCMTRANSMISSION TCM
Revision: December 20092009 QX56