2007 INFINITI QX56 diagram

IDX-6
ALPHABETICAL INDEX
Line pressure solenoid valve ........................... AT-118
Line pressure switch (Transfer) .......... TF-154, TF-167
Line pressure test (A/T) ..................................... AT-52
Location of electrical units ................................. PG-65
Low coast brake solenoid valve ......... AT-151, AT-153
Low tire pressure warning system ...................... WT-8
Low tire pressure warning system - trouble diagnoses .
WT-11
Low tire pressure warning system - Wiring diagram .....
WT-11
Lubricant (R134a) A/C ..................................... ATC-22
Lubricants ......................................................... MA-11
Lubrication circuit (engine) ................................... LU-6
Lubrication oil A/C ............................................ ATC-22
Lubrication-locks, hinges and hood latches ...... MA-31
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MAFS - Wiring diagram ..................... EC-200
, EC-208
Magnet clutch ............................... ATC-115, ATC-180
MAIN - Wiring diagram ...................... EC-150, AT-163
Main oil pump (Transfer) ..................... TF-154, TF-167
Mainshaft (Transfer) ........................... TF-154, TF-167
Maintenance (engine)Schedule 1 ....................... MA-7
Maintenance (engine)Schedule 2 ....................... MA-9
Major overhaul (Final drive) ............................. FFD-14
Major overhaul (Transfer) ................................ TF-146
Malfunction indicator lamp (MIL) ........................ EC-65
Map lamp .......................................................... LT-111
Mass air flow sensor (MAFS) ............. EC-197, EC-206
Meter ..................................................................... DI-5
METER - Wiring diagram ...................................... DI-9
MIL data link connectors circuit ....................... EC-697
MIL/DL - Wiring diagram .................................. EC-697
MIRROR - Wiring diagram ................................ GW-87
Misfire .............................................................. EC-350
Mode door control linkage adjustment ............. ATC-65
Mode door motor ............................ ATC-62, ATC-165
Model variation ................................................... GI-48
Multiport fuel injection (MFI) system .................. EC-25
Multiport fuel injection precautions ....................... GI-6
Multi-remote control system - See Remote keyless entry
system ............................................................... BL-40
N
NATS - Wiring diagram .................................... BL-130
NAVI - Wiring diagram ....................................... AV-86
NAVI Control Unit .............................................. AV-83
Navigation system ............................................. AV-81
Neutral-4LO switch ............................................ TF-61
NONDTC - Wiring diagram .............................. AT-172
NVH troubleshooting (AX) ................................. FAX-4
NVH troubleshooting (EM) ................................ EM-10
NVH troubleshooting (Final drive) ..................... RFD-7
NVH troubleshooting (Propeller shaft) ................. PR-3
NVH troubleshooting (RAX) .............................. RAX-4
NVH troubleshooting (RSU) .............................. RSU-5
NVH troubleshooting (ST) .................................... PS-5
NVH troubleshooting (Transfer) ......................... TF-10
NVH troubleshooting (WT)NVH troubleshooting (WT) ..
WT-4
NVIS (Nissan vehicle immobilizer system) precautions
GI-3
O
O2H2B1 - Wiring diagram ............................... EC-183
O2H2B2 - Wiring diagram ............................... EC-185
O2S2B1 - Wiring diagram ... EC-279, EC-290, EC-303
O2S2B2 - Wiring diagram ... EC-281, EC-292, EC-305
Oil cooler (engine) .............................................. LU-12
Oil filter ............................................................... LU-11
Oil filter (Transfer) ............................................ TF-143
Oil pan (engine) ................................................ EM-24
Oil pressure (engine) ........................................... LU-8
Oil pressure relief valve (engine) ......................... LU-6
Oil pump (engine) .............................................. LU-14
Oil seal replacement (engine) ........................... EM-60
Oil seal replacement (front of final drive) FFD-8, RFD-9
Oil seal replacement (side of final drive) ......... RFD-11
On board diagnostic system ............................. EC-49
ORVR (On-board Refueling Vapor Recovery) .. EC-40
Overheat ......................................................... EC-504
P
P/SCKT - Wiring diagram ................................. WW-46
Pantograph jack .................................................. GI-42
Park/Neutral position switch ............................ EC-487
Parking brake control ........................................... PB-4
PCV (positive crankcase ventilation) ................ EC-46
Periodic maintenance ......................................... MA-7
Personal lamp .................................................. LT-111
PGC/V - Wiring diagram ................... EC-397, EC-405
PHASE - Wiring diagram ................................ EC-371
PHONE - Wiring diagram ................................... AV-65
Pinion bearing preload diff. ............................. RFD-26
Piston pin inspection ......................................... EM-94
Piston ring inspection ........................................ EM-95
Piston to bore clearance ................................... EM-99
Planetary carrier (Transfer) ................. TF-149, TF-176
PNP/SW - Wiring diagram ... EC-489, AT-101, AT-102
POS - Wiring diagram ..................................... EC-364
POWER - Wiring diagram ................................... PG-6
Power door lock ................................................. BL-16
Power seat ......................................................... SE-81
Power steering fluid level .................................. MA-29
Power steering gear ........................................... PS-15
Power steering oil pump .................................... PS-22
Power steering pressure (PSP) sensor ........... EC-470
Power steering system bleeding .......................... PS-6
Power supply routing .......................................... PG-4
Power window .................................................. GW-15
PRE/SE - Wiring diagram ................. EC-429, EC-435
Precautions (General) ........................................... GI-4
Precautions in repairing high strength steel ..... BL-182
Pressure switch 1 ............................... AT-141, AT-155

IDX-7
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IDX
ALPHABETICAL INDEX
Pressure switch 2 ............................................. AT-153
Pressure switch 3 ............................... AT-137, AT-157
Pressure switch 5 ............................... AT-145, AT-159
Pressure switch 6 ............................... AT-149, AT-161
Pressure test (A/T) ............................................. AT-52
Propeller shaft ........................................... PR-4, PR-8
Propeller shaft inspection .................................. MA-25
Propeller shaft on vehicle service ....................... PR-8
Propeller shaft vibration ............................ PR-4, PR-8
PS/SEN - Wiring diagram ................................ EC-471
R
R/VIEW - Wiring diagram .................................... DI-66
Radiator ............................................................. CO-14
Rear Audio Remote Control Unit ......................... AV-8
Rear axle ........................................................... RAX-5
Rear bumper ....................................................... EI-15
Rear case (Transfer) .......................... TF-148, TF-181
Rear combination lamp removal and installation ... LT-
101
Rear cover packing replacement diff. .............. RFD-28
Rear door ........................................... BL-117, GW-65
Rear seat belt ...................................................... SB-7
Rear suspension ............................................. RSU-23
Rear view monitor ............................................... DI-63
Rear washer .................................................... WW-29
Rear window defogger ..................................... GW-71
Rear wiper ....................................................... WW-29
Refrigerant connection precaution .................... ATC-6
Refrigerant discharging evacuating charging ATC-175
Refrigerant general precaution .......................... ATC-6
Refrigerant lines ........... ATC-175, ATC-183, ATC-184
Refrigerant pressure sensor ............ EC-692, ATC-184
Relay box .......................................................... PG-78
Remote keyless entry system ............................ BL-40
Removal and installation (A/T) ........... AT-238, AT-241
Removal and installation (Transfer) ................. TF-145
Ring gear diff. inspection ................................. RFD-18
Road wheel size ................................................. GI-51
Rocker cover ..................................................... EM-35
Room lamp ....................................................... LT-110
Room lamp - See Interior lamp ........................ LT-110
ROOM/L - Wiring diagram ................................ LT-116
RP/SEN - Wiring diagram ............................... EC-693
S
SAE J1979 - Service $01 - 09 ........................... EC-49
SEAT - Wiring diagram ..................................... SE-81
Seat belt inspection ............................... SB-12, MA-32
Seat belt pre-tensioner .................................... SRS-50
Seat belt, front ..................................................... SB-3
Seat belt, rear ...................................................... SB-7
Seat, front .......................................................... SE-89
Self-diagnosis (Transfer) .................................... TF-49
SEN/PW - Wiring diagram ............................... EC-483
SHIFT - Wiring diagram ................................... AT-217
Shift control (Transfer) ....................... TF-149, TF-176
Shift lock system .............................................. AT-216
Shock absorber (front) ..................................... FSU-11
Shock absorber (rear) ..................................... RSU-32
Side air bag (satellite) sensor .......................... SRS-49
Side curtain air bag .......................................... SRS-46
Side trim .............................................................. EI-35
SMJ (super multiple junction) ............................ PG-74
SONAR - Wiring diagram ................................... DI-53
Spare tire size ..................................................... GI-51
Spark plug ......................................................... EM-29
Specification value ........................................... EC-139
Speedometer ........................................................ DI-5
Spiral cable ...................................................... SRS-41
SROOF - Wiring diagram .................................. RF-13
SRS - See Supplemental Restraint System ...... SRS-5
SRS - Wiring diagram ...................................... SRS-13
SRS Trouble diagnoses ..................................... SRS-9
Stabilizer bar (front) ......................................... FSU-12
Stabilizer bar (rear) ......................................... RSU-39
Stall test (A/T) .................................................... AT-51
Standardized relay ............................................. PG-72
START - Wiring diagram ................................... SC-11
Starting system .................................................. SC-10
Steering gear, linkage and transfer gear inspection .....
MA-29
Steering linkage ................................................. PS-15
Steering wheel and column ................................. PS-7
Step lamp ......................................................... LT-111
Stop lamp ........................................................... LT-84
Stop lamp switch ................. EC-572, EC-584, EC-647
STOP/L - Wiring diagram ................................... LT-85
Strut (front) ...................................................... FSU-10
STSIG - Wiring diagram .................................... AT-97
Sub-oil pump (Transfer) ...................... TF-154, TF-167
Sun gear (Transfer) ............................ TF-149, TF-176
Sun roof, electric ................................................ RF-10
Sunload sensor .............................................. ATC-144
Sunroof .............................................................. RF-22
Supplemental Restraint System ........................ SRS-5
Supplemental restraint system - Wiring diagram . SRS-
13
Symbols and abbreviations ..................... GI-10, GI-23
Symptom matrix chart ........................................ EC-94
System readiness test (SRT) code .................... EC-55
T
Tachometer .......................................................... DI-5
Tail lamp ............................................................. LT-89
TAIL/L - Wiring diagram ...................................... LT-91
TCM circuit diagram .......................................... AT-50
TCS - Wiring diagram ..................................... BRC-16
TCS (traction control system) ........................... BRC-7
TCS component parts and connector location BRC-14
TCS wheel sensors ........................................ BRC-14
Telephone .......................................................... AV-62
Theft warning system - See Vehicle security (Theft warn-
ing) system ......................................................... BL-67
Thermometer ...................................................... DI-23

IDX-8
ALPHABETICAL INDEX
Three way catalyst ............................................ EM-21
Three way catalyst function (Bank 1) ............... EC-376
Three way catalyst function (Bank 2) ............... EC-376
Three way catalyst precautions ............................ GI-5
Throttle control motor ....................................... EC-601
Throttle control motor relay .............................. EC-589
Throttle position sensor (TPS) .. EC-224, EC-343, EC-
514, EC-516, EC-621
Throttle valve closed position learning ............... EC-80
Tie-rod ............................................................... PS-15
Timing chain ..................................................... EM-37
Tire rotation ....................................................... MA-28
Tire size .............................................................. GI-51
Torque converter installation AT-239, AT-240, AT-243,
AT-244
Torque convertor clutch solenoid valve ... AT-114, AT-
116
Tow truck towing ................................................. GI-44
Towing point ....................................................... GI-45
TPS1 - Wiring diagram .................................... EC-345
TPS2 - Wiring diagram .................................... EC-226
TPS3 - Wiring diagram .................................... EC-623
Traction control system - Wiring diagram ....... BRC-16
Transfer control device ............. TF-75, TF-79, TF-138
Transfer control unit inspection table ................. TF-35
Transfer dropping resistor .................................. TF-89
Transfer fluid temperature sensor TF-103, TF-154, TF-
167
Transfer motor .................................... TF-101, TF-142
Transfer motor relay ........................................ TF-101
Transfer oil replacement ................................... MA-24
Transfer serial number ........................................ GI-50
Transmission serial number ................................ GI-50
Tread-FR&RR (Dimensions) ............................... GI-51
Trim ..................................................................... EI-35
TRNSCV - Wiring diagram .................. BL-130, BL-146
Trouble diagnoses .............................................. GI-11
Turbine revolution sensor ................................ AT-105
TURN - Wiring diagram ...................................... LT-67
Turn signal lamp ................................................. LT-63
Two trip detection logic ...................................... EC-49
Two-pole lift ........................................................ GI-43
V
Vacuum hose (brake system) ............................ BR-20
Vacuum hose drawing (Engine control) ........... EC-106
Valve clearance ................................................ EM-55
Valve guide ....................................................... EM-69
Vanity mirror lamp ............................................. LT-110
VDC (vehicle dynamics control) ........................ BRC-7
VDC -Wiring diagram ...................................... BRC-16
Vehicle identification number .............................. GI-49
Vehicle recovery (freeing a stuck vehicle) .......... GI-45
Vehicle security (theft warning) system ............. BL-67
Vehicle speed sensor (VSS) ............................ EC-464
VEHSEC - Wiring diagram ................................. BL-71
VENT/V - Wiring diagram .................. EC-412, EC-419
VIN registration .................................................. EC-79
Viscosity number (SAE) .................................... MA-12
VSS A/T - Wiring diagram .................. AT-107, AT-109
W
W/ANT - Wiring diagram .................................... AV-59
Wait detection switch ......................................... TF-68
WARN - Wiring diagram ...................................... DI-29
Warning chime .................................................... DI-38
Warning lamps .................................................... DI-28
Washer, front ..................................................... WW-4
Washer, rear .................................................... WW-29
Water pump ...................................................... CO-19
Water temperature gauge ..................................... DI-5
Wheel alignment (front) ..................................... FSU-6
Wheel alignment (rear) ................................... RSU-25
Wheel bearing (front) ........................................ FAX-5
Wheel bearing (rear) ......................................... RAX-5
Wheel hub (rear) ............................................... RAX-5
Wheel size .......................................................... GI-51
Wheelbase (Dimensions) .................................... GI-51
Width (Dimensions) ............................................. GI-51
WINDOW - Wiring diagram .............................. GW-22
Window, door ...................................... GW-62, GW-65
Windshield ....................................................... GW-11
WIP/R - Wiring diagram ................................... WW-33
WIPER - Wiring diagram .................................... WW-8
Wiper, front ........................................................ WW-4
Wiper, rear ....................................................... WW-29
Wiring Diagram (Cell code) list ......................... PG-62
Wiring diagrams .................................................. GI-15
WT-T/WARN - Wiring diagram .......................... WT-11

LAN-1
ELECTRICAL
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SECTION LAN
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CONTENTS
LAN SYSTEM
CAN FUNDAMENTAL
SERVICE INFORMATION ............................
3
PRECAUTIONS ...................................................3
Precaution When Using CONSULT-II .......................3
Precaution for Trouble Diagnosis ..............................3
Precaution for Harness Repair ..................................3
SYSTEM DESCRIPTION .....................................4
CAN Communication System ....................................4
Diag on CAN .............................................................5
TROUBLE DIAGNOSIS ......................................7
Condition of Error Detection ......................................7
Symptom When Error Occurs in CAN Communi-
cation System ............................................................
7
Self-Diagnosis .........................................................10
CAN Diagnostic Support Monitor ............................10
TROUBLE DIAGNOSES WORK FLOW ............13
Information Needed for Trouble Diagnosis .............13
How to Use CAN Communication Signal Chart ......13
Trouble Diagnosis Flow Chart .................................14
Trouble Diagnosis Procedure ..................................14
CAN
SERVICE INFORMATION ...........................
36
INDEX FOR DTC ................................................36
DTC No. Index ........................................................36
HOW TO USE THIS SECTION ...........................37
Caution ....................................................................37
Abbreviation List ......................................................37
PRECAUTIONS ..................................................38
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" .................................................................
38
Precaution When Using CONSULT-II .....................38
Precaution for Trouble Diagnosis ............................38
Precaution for Harness Repair ................................38
TROUBLE DIAGNOSIS ....................................40
CAN Diagnostic Support Monitor .............................40
CAN System Specification Chart .............................44
CAN Communication Signal Chart ..........................44
Schematic ................................................................49
Wiring Diagram - CAN - ...........................................50
Interview Sheet ........................................................53
Data Sheet ...............................................................54
CAN System (Type 1) ..............................................57
CAN System (Type 2) ..............................................58
CAN System (Type 3) ..............................................59
CAN System (Type 4) ..............................................60
Component Parts Location ......................................61
Harness Layout .......................................................61
Malfunction Area Chart ............................................61
Main Line Between TCM and Driver Seat Control
Unit ..........................................................................
62
Main Line Between TCM and ICC Sensor ...............63
Main Line Between ICC Sensor and ICC Unit .........64
Main Line Between ICC Unit and Driver Seat Con-
trol Unit ....................................................................
65
Main Line Between Driver Seat Control Unit and
Data Link Connector ................................................
65
Main Line Between Data Link Connector and ABS
Actuator and Electric Unit (Control Unit) ..................
66
ECM Branch Line Circuit .........................................67
TCM Branch Line Circuit .........................................67
ICC Sensor Branch Line Circuit ...............................68
ICC Unit Branch Line Circuit ....................................69
Driver Seat Control Unit Branch Line Circuit ...........69
BCM Branch Line Circuit .........................................70
Display Control Unit Branch Line Circuit .................70
Data Link Connector Branch Line Circuit ................71
Front Air Control Branch Line Circuit .......................71
Combination Meter Branch Line Circuit ...................72
Steering Angle Sensor Branch Line Circuit .............72
Transfer Control Unit Branch Line Circuit ................73
ABS Actuator and Electric Unit (Control Unit)
Branch Line Circuit ..................................................
74

LAN-4
< SERVICE INFORMATION >[CAN FUNDAMENTAL]
SYSTEM DESCRIPTION
SYSTEM DESCRIPTION
CAN Communication SystemINFOID:0000000003533609
• CAN communication is a multiplex communication system. This enables the system to transmit and receive
large quantities of data at high speed by connecting control units with two communication lines (CAN-H and
CAN-L).
• Control units on the CAN network transmit signals using the CAN communication control circuit. They
receive only necessary signals from other control units to operate various functions.
• CAN communication lines adopt twisted-pair line style (two lines twisted) for noise immunity.
SYSTEM DIAGRAM
Each control unit passes an electric current to the termination circuits when transmitting CAN communication
signal. The termination circuits produce an electrical potential difference between CAN-H and CAN-L. CAN
communication system transmits and receives CAN communication signals by the potential difference.
SKIB8887E
Component Description
Main line CAN communication line between splices
Branch line CAN communication line between splice and a control unit
Splice A point connecting a branch line with a main line
Termination circuit Refer to "CAN COMMUNICATION CONTROL CIRCUIT".

LAN-6
< SERVICE INFORMATION >[CAN FUNDAMENTAL]
SYSTEM DESCRIPTION
System Diagram
SKIB8714E
Name Harness Description
DDL1Tx
RxIt is used for trouble diagnosis. (CAN-H and CAN-L are used for controlling)
DDL2 K-LINE It is used for trouble diagnosis. (CAN-H and CAN-L are used for controlling)
Diag on CANCAN-H
CAN-LIt is used for trouble diagnosis and control.

TROUBLE DIAGNOSES WORK FLOW
LAN-13
< SERVICE INFORMATION >[CAN FUNDAMENTAL]
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TROUBLE DIAGNOSES WORK FLOW
Information Needed for Trouble DiagnosisINFOID:0000000003533615
CAN communication system performs trouble diagnosis with the following tools.
How to Use CAN Communication Signal ChartINFOID:0000000003533616
The CAN communication signal chart lists the signals needed for trouble diagnosis. It is useful for detecting
the root cause by finding a signal related to the symptom, and by checking transmission and reception unit.
To o l U s a g e
Interview sheet For filling in vehicle information and interview with customer.
Data sheet For attaching CONSULT-II data or on-board diagnosis data.
Diagnosis sheet For detecting the root cause. (Diagnosis sheet includes system diagram for every CAN system type)
SELECT SYSTEM
(CONSULT-II)
For checking the condition of control units and the status of CAN communication. SELF-DIAG RESULTS
(CONSULT-II)
CAN DIAG SUPPORT MNTR
(CONSULT-II)
CAN communication signal
chartFor converting information received from a customer into CAN communication signal transmission
and reception. This information can be used to judge whether a circuit between control units is nor-
mal or abnormal.
Abbreviation list For checking abbreviations in CAN communication signal chart and diagnosis sheet.
SKIB8715E

LAN-50
< SERVICE INFORMATION >[CAN]
TROUBLE DIAGNOSIS
Wiring Diagram - CAN -
INFOID:0000000003533630
BKWA0731E