diagram INFINITI QX56 2011 Factory Service Manual

ILLUMINATIONINL-51
< WIRING DIAGRAM >
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INL
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JCLWM5488GB
Revision: 2010 May2011 QX56

INL-52
< WIRING DIAGRAM >
ILLUMINATION
JCLWM5489GB
Revision: 2010 May2011 QX56

ILLUMINATIONINL-53
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JCLWM5490GB
Revision: 2010 May2011 QX56

LAN
LAN-1
ELECTRICAL & POWER CONTROL
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SECTION LAN
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CONTENTS
LAN SYSTEM
CAN FUNDAMENTAL
PRECAUTION ................ ...............................
7
PRECAUTIONS .............................................. .....7
Precautions for Trouble Diagnosis ...................... ......7
Precautions for Harness Repair ................................7
SYSTEM DESCRIPTION ..............................8
SYSTEM ......................................................... .....8
CAN COMMUNICATION SYSTEM .............................8
CAN COMMUNICATION SYSTEM : System De-
scription ............................................................... ......
8
CAN COMMUNICATION SYSTEM : System Dia-
gram ..........................................................................
8
CAN COMMUNICATION SYSTEM : CAN Com-
munication Control Circuit .........................................
9
DIAG ON CAN ....................................................... ......9
DIAG ON CAN : Description .....................................9
DIAG ON CAN : System Diagram ...........................10
TROUBLE DIAGNOSIS .....................................11
Condition of Error Detection ................................ ....11
Symptom When Error Occurs in CAN Communi-
cation System ...................................................... ....
11
CAN Diagnosis with CONSULT-III ..........................14
Self-Diagnosis .........................................................15
CAN Diagnostic Support Monitor ............................15
How to Use CAN Communication Signal Chart ......17
BASIC INSPECTION ...................................18
DIAGNOSIS AND REPAIR WORKFLOW ..... ....18
Trouble Diagnosis Flow Chart ............................. ....18
Trouble Diagnosis Procedure ..................................18
CAN
HOW TO USE THIS MANU AL .....................
23
HOW TO USE THIS SECTION ....................... ....23
Caution ................................................................ ....23
Abbreviation List ......................................................23
PRECAUTION ..............................................24
PRECAUTIONS .................................................24
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ....
24
Precautions for Trouble Diagnosis ..........................24
Precautions for Harness Repair ..............................24
SYSTEM DESCRIPTION .............................26
COMPONENT PARTS ......................................26
Component Parts Location .................................. ....26
SYSTEM ............................................................27
CAN COMMUNICATION SYSTEM ........................ ....27
CAN COMMUNICATION SYSTEM : CAN System
Specification Chart .............................................. ....
27
CAN COMMUNICATION SYSTEM : CAN Com-
munication Signal Chart ..........................................
28
WIRING DIAGRAM ......................................33
CAN SYSTEM (WITH ICC) ...............................33
Wiring Diagram .................................................... ....33
CAN SYSTEM (WITHOUT ICC) ........................46
Wiring Diagram ........................................................46
BASIC INSPECTION ...................................56
DIAGNOSIS AND REPAIR WORKFLOW ........56
Interview Sheet .................................................... ....56
DTC/CIRCUIT DIAGNOSIS .........................57
MALFUNCTION AREA CHART ........................57
System Diagram .................................................. ....57
CAN Communication Circuit ....................................57
Revision: 2010 May2011 QX56

LAN
LAN-3
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Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" .............................................................
..
102
SYSTEM DESCRIPTION ...........................103
COMPONENT PARTS ................................... ..103
Component Parts Location .................................. ..103
SYSTEM ...........................................................104
System Description ............................................. ..104
DIAGNOSIS SYSTEM (CAN GATEWAY) .......105
CONSULT-III Function ........................................ ..105
ECU DIAGNOSIS INFORMATION ............106
CAN GATEWAY ............................................. ..106
Reference Value ................................................. ..106
DTC Inspection Priority Chart .............................106
DTC Index ............................................................106
WIRING DIAGRAM ....................................108
CAN GATEWAY SYSTEM ............................. ..108
Wiring Diagram ................................................... ..108
BASIC INSPECTION .................................110
ADDITIONAL SERVICE WHEN REPLACING
CAN GATEWAY ............................................. ..
110
Description .......................................................... ..110
Work Procedure ....................................................110
CONFIGURATION (CAN GATEWAY) .............111
Description .......................................................... ..111
Work Procedure ....................................................111
DTC/CIRCUIT DIAGNOSIS .......................113
U1000 CAN COMM CIRCUIT ......................... ..113
Description .......................................................... ..113
DTC Logic .............................................................113
Diagnosis Procedure .............................................113
U1010 CONTROL UNIT (CAN) ........................114
Description .......................................................... ..114
DTC Logic .............................................................114
Diagnosis Procedure .............................................114
B2600 CONFIG ERROR ..................................115
Description .......................................................... ..115
DTC Logic .............................................................115
Diagnosis Procedure .............................................115
POWER SUPPLY AND GROUND CIRCUIT ....116
Diagnosis Procedure ........................................... ..116
REMOVAL AND INSTALLATION .............117
CAN GATEWAY ............................................. ..117
Removal and Installation ..................................... ..117
CAN SYSTEM (TYPE 1)
DTC/CIRCUIT DIAGNOSIS .......................
118
MAIN LINE BETWEEN ABS AND DLC CIR-
CUIT ................................................................
118
Diagnosis Procedure ........................................... ..118
MAIN LINE BETWEEN DLC AND E-SUS CIR-
CUIT ................................................................
119
Diagnosis Procedure .............................................119
MAIN LINE BETWEEN E-SUS AND ADP CIR-
CUIT ................................................................
120
Diagnosis Procedure .............................................120
ECM BRANCH LINE CIRCUIT .......................121
Diagnosis Procedure .............................................121
ABS BRANCH LINE CIRCUIT ........................122
Diagnosis Procedure .............................................122
TCM BRANCH LINE CIRCUIT ........................123
Diagnosis Procedure .............................................123
A-BAG BRANCH LINE CIRCUIT ....................124
Diagnosis Procedure .............................................124
AV BRANCH LINE CIRCUIT ..........................125
Diagnosis Procedure .............................................125
BCM BRANCH LINE CIRCUIT .......................126
Diagnosis Procedure .............................................126
DLC BRANCH LINE CIRCUIT ........................127
Diagnosis Procedure .............................................127
HVAC BRANCH LINE CIRCUIT .....................128
Diagnosis Procedure .............................................128
M&A BRANCH LINE CIRCUIT .......................129
Diagnosis Procedure .............................................129
STRG BRANCH LINE CIRCUIT .....................130
Diagnosis Procedure .............................................130
TPMS BRANCH LINE CIRCUIT .....................131
Diagnosis Procedure .............................................131
IPDM-E BRANCH LINE CIRCUIT ...................132
Diagnosis Procedure .............................................132
ADP BRANCH LINE CIRCUIT ........................133
Diagnosis Procedure .............................................133
E-SUS BRANCH LINE CIRCUIT ....................134
Diagnosis Procedure .............................................134
PWBD BRANCH LINE CIRCUIT ....................135
Diagnosis Procedure .............................................135
CAN COMMUNICATION CIRCUIT .................136
Diagnosis Procedure .............................................136
Revision: 2010 May2011 QX56

LAN-8
< SYSTEM DESCRIPTION >[CAN FUNDAMENTAL]
SYSTEM
SYSTEM DESCRIPTION
SYSTEM
CAN COMMUNICATION SYSTEM
CAN COMMUNICATION SYSTEM
: System DescriptionINFOID:0000000006220512
 CAN communication is a multiplex communication syste m. This enables the system to transmit and receive
large quantities of data at high speed by connecting c ontrol units with two communication lines (CAN-H and
CAN-L).
 Control units on the CAN network transmit signals us ing the CAN communication control circuit. They
receive only necessary signals from other c ontrol units to operate various functions.
 CAN communication lines adopt twisted-pair line st yle (two lines twisted) for noise immunity.
CAN COMMUNICATION SYSTEM : System DiagramINFOID:0000000006220513
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 LAN-9, "
CAN COMMUNICATION SYSTEM : CAN Communication Control Circuit".
Revision: 2010 May2011 QX56

LAN-10
< SYSTEM DESCRIPTION >[CAN FUNDAMENTAL]
SYSTEM
DIAG ON CAN : System Diagram
INFOID:0000000006220516
SKIB8714E
Name Harness Description
DDL1 Tx
Rx
It 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 CAN CAN-H
CAN-L It is used for trouble diagnosis and control.
Revision: 2010 May2011 QX56

LAN
CAN SYSTEM (WITH ICC)LAN-33
< WIRING DIAGRAM > [CAN]
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WIRING DIAGRAM
CAN SYSTEM (WITH ICC)
Wiring DiagramINFOID:0000000006238445
JCMWM8300GB
Revision: 2010 May2011 QX56

LAN-34
< WIRING DIAGRAM >[CAN]
CAN SYSTEM (WITH ICC)
JCMWM8301GB
Revision: 2010 May2011 QX56

LAN
CAN SYSTEM (WITH ICC)LAN-35
< WIRING DIAGRAM > [CAN]
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JCMWM8302GB
Revision: 2010 May2011 QX56