INFINITI QX56 2011 Factory Service Manual
Manufacturer: INFINITI, Model Year: 2011, Model line: QX56, Model: INFINITI QX56 2011Pages: 5598, PDF Size: 94.53 MB
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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
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LAN-2
ITS Communication Circuit .....................................58
MAIN LINE BETWEEN ABS AND DLC CIR-
CUIT ...................................................................
60
Diagnosis Procedure ........................................... ...60
MAIN LINE BETWEEN DLC AND E-SUS CIR-
CUIT ...................................................................
61
Diagnosis Procedure ........................................... ...61
MAIN LINE BETWEEN E-SUS AND ADP CIR-
CUIT ...................................................................
62
Diagnosis Procedure ........................................... ...62
MAIN LINE BETWEEN ADP AND PWBD CIR-
CUIT ...................................................................
63
Diagnosis Procedure ........................................... ...63
MAIN LINE BETWEEN RDR-R AND RDR-L
CIRCUIT .............................................................
64
Diagnosis Procedure ........................................... ...64
MAIN LINE BETWEEN RDR-L AND LANE
CIRCUIT .............................................................
65
Diagnosis Procedure ........................................... ...65
MAIN LINE BETWEEN LANE AND APA CIR-
CUIT ...................................................................
67
Diagnosis Procedure ........................................... ...67
ECM BRANCH LINE CIRCUIT ..........................68
Diagnosis Procedure ........................................... ...68
4WD BRANCH LINE CIRCUIT ..........................69
Diagnosis Procedure ........................................... ...69
ABS BRANCH LINE CIRCUIT ..........................70
Diagnosis Procedure ........................................... ...70
TCM BRANCH LINE CIRCUIT ..........................71
Diagnosis Procedure ........................................... ...71
A-BAG BRANCH LINE CIRCUIT ......................72
Diagnosis Procedure ........................................... ...72
AFS BRANCH LINE CIRCUIT ...........................73
Diagnosis Procedure ........................................... ...73
AV BRANCH LINE CIRCUIT .............................74
Diagnosis Procedure ........................................... ...74
BCM BRANCH LINE CIRCUIT ..........................75
Diagnosis Procedure ........................................... ...75
CGW BRANCH LINE CIRCUIT (CAN COM-
MUNICATION CIRCUIT 1) .................................
76
Diagnosis Procedure ........................................... ...76
CGW BRANCH LINE CIRCUIT (CAN COM-
MUNICATION CIRCUIT 2) .................................
77
Diagnosis Procedure ........................................... ...77
DLC BRANCH LINE CIRCUIT ..........................78
Diagnosis Procedure ............................................ ...78
HVAC BRANCH LINE CIRCUIT ........................79
Diagnosis Procedure ............................................ ...79
M&A BRANCH LINE CIRCUIT ..........................80
Diagnosis Procedure ............................................ ...80
STRG BRANCH LINE CIRCUIT ........................81
Diagnosis Procedure ............................................ ...81
TPMS BRANCH LINE CIRCUIT ........................82
Diagnosis Procedure ............................................ ...82
IPDM-E BRANCH LINE CIRCUIT .....................83
Diagnosis Procedure ............................................ ...83
ADP BRANCH LINE CIRCUIT ..........................84
Diagnosis Procedure ............................................ ...84
PSB BRANCH LINE CIRCUIT ..........................85
Diagnosis Procedure ............................................ ...85
E-SUS BRANCH LINE CIRCUIT .......................86
Diagnosis Procedure ............................................ ...86
ICC BRANCH LINE CIRCUIT ............................87
Diagnosis Procedure ............................................ ...87
PWBD BRANCH LINE CIRCUIT .......................88
Diagnosis Procedure ............................................ ...88
RDR-R BRANCH LINE CIRCUIT ......................89
Diagnosis Procedure ............................................ ...89
RDR-L BRANCH LINE CIRCUIT .......................90
Diagnosis Procedure ............................................ ...90
LANE BRANCH LINE CIRCUIT ........................91
Diagnosis Procedure ............................................ ...91
APA BRANCH LINE CIRCUIT ..........................92
Diagnosis Procedure ............................................ ...92
LASER BRANCH LINE CIRCUIT ......................93
Diagnosis Procedure ............................................ ...93
CAN COMMUNICATION CIRCUIT ...................94
Diagnosis Procedure ............................................ ...94
CAN COMMUNICATION CIRCUIT 1 ................96
Diagnosis Procedure ............................................ ...96
CAN COMMUNICATION CIRCUIT 2 ................98
Diagnosis Procedure ............................................ ...98
ITS COMMUNICATION CIRCUIT .....................100
Diagnosis Procedure ............................................ .100
CAN GATEWAY
PRECAUTION ............... ............................
102
PRECAUTIONS .............................................. ..102
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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
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LAN-4
CAN SYSTEM (TYPE 2)
DTC/CIRCUIT DIAGNOSIS ...................... ..
138
MAIN LINE BETWEEN ABS AND DLC CIR-
CUIT ................................................................ .
138
Diagnosis Procedure ........................................... ..138
MAIN LINE BETWEEN ADP AND PWBD CIR-
CUIT .................................................................
139
Diagnosis Procedure ........................................... ..139
MAIN LINE BETWEEN RDR-R AND RDR-L
CIRCUIT ...........................................................
140
Diagnosis Procedure ........................................... ..140
MAIN LINE BETWEEN RDR-L AND LANE
CIRCUIT ...........................................................
141
Diagnosis Procedure ........................................... ..141
MAIN LINE BETWEEN LANE AND APA CIR-
CUIT .................................................................
143
Diagnosis Procedure ........................................... ..143
ECM BRANCH LINE CIRCUIT ........................144
Diagnosis Procedure ........................................... ..144
ABS BRANCH LINE CIRCUIT ........................145
Diagnosis Procedure ........................................... ..145
TCM BRANCH LINE CIRCUIT ........................146
Diagnosis Procedure ........................................... ..146
A-BAG BRANCH LINE CIRCUIT ....................147
Diagnosis Procedure ........................................... ..147
AFS BRANCH LINE CIRCUIT .........................148
Diagnosis Procedure ........................................... ..148
AV BRANCH LINE CIRCUIT ...........................149
Diagnosis Procedure ........................................... ..149
BCM BRANCH LINE CIRCUIT ........................150
Diagnosis Procedure ........................................... ..150
CGW BRANCH LINE CIRCUIT (CAN COM-
MUNICATION CIRCUIT 1) ...............................
151
Diagnosis Procedure ........................................... ..151
CGW BRANCH LINE CIRCUIT (CAN COM-
MUNICATION CIRCUIT 2) ...............................
152
Diagnosis Procedure ........................................... ..152
DLC BRANCH LINE CIRCUIT .........................153
Diagnosis Procedure ........................................... ..153
HVAC BRANCH LINE CIRCUIT ......................154
Diagnosis Procedure ........................................... ..154
M&A BRANCH LINE CIRCUIT ........................155
Diagnosis Procedure ........................................... ..155
STRG BRANCH LINE CIRCUIT ......................156
Diagnosis Procedure ............................................ .156
TPMS BRANCH LINE CIRCUIT .......................157
Diagnosis Procedure ............................................ .157
IPDM-E BRANCH LINE CIRCUIT ....................158
Diagnosis Procedure ............................................ .158
ADP BRANCH LINE CIRCUIT .........................159
Diagnosis Procedure ............................................ .159
PSB BRANCH LINE CIRCUIT .........................160
Diagnosis Procedure ............................................ .160
E-SUS BRANCH LINE CIRCUIT ......................161
Diagnosis Procedure ............................................ .161
ICC BRANCH LINE CIRCUIT ...........................162
Diagnosis Procedure ............................................ .162
PWBD BRANCH LINE CIRCUIT ......................163
Diagnosis Procedure ............................................ .163
RDR-R BRANCH LINE CIRCUIT .....................164
Diagnosis Procedure ............................................ .164
RDR-L BRANCH LINE CIRCUIT ......................165
Diagnosis Procedure ............................................ .165
LANE BRANCH LINE CIRCUIT .......................166
Diagnosis Procedure ............................................ .166
APA BRANCH LINE CIRCUIT .........................167
Diagnosis Procedure ............................................ .167
LASER BRANCH LINE CIRCUIT .....................168
Diagnosis Procedure ............................................ .168
CAN COMMUNICATION CIRCUIT 1 ...............169
Diagnosis Procedure ............................................ .169
CAN COMMUNICATION CIRCUIT 2 ...............171
Diagnosis Procedure ............................................ .171
ITS COMMUNICATION CIRCUIT .....................173
Diagnosis Procedure ............................................ .173
CAN SYSTEM (TYPE 3)
DTC/CIRCUIT DIAGNOSIS .......................
175
MAIN LINE BETWEEN ABS AND DLC CIR-
CUIT ................................................................ ..
175
Diagnosis Procedure ............................................ .175
MAIN LINE BETWEEN DLC AND E-SUS CIR-
CUIT ..................................................................
176
Diagnosis Procedure ............................................ .176
MAIN LINE BETWEEN E-SUS AND ADP CIR-
CUIT ..................................................................
177
Diagnosis Procedure ............................................ .177
ECM BRANCH LINE CIRCUIT .........................178
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Diagnosis Procedure ...........................................
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4WD BRANCH LINE CIRCUIT .........................179
Diagnosis Procedure ........................................... ..179
ABS BRANCH LINE CIRCUIT .........................180
Diagnosis Procedure ........................................... ..180
TCM BRANCH LINE CIRCUIT .........................181
Diagnosis Procedure ........................................... ..181
A-BAG BRANCH LINE CIRCUIT .....................182
Diagnosis Procedure ........................................... ..182
AV BRANCH LINE CIRCUIT ............................183
Diagnosis Procedure ........................................... ..183
BCM BRANCH LINE CIRCUIT ........................184
Diagnosis Procedure ........................................... ..184
DLC BRANCH LINE CIRCUIT .........................185
Diagnosis Procedure ........................................... ..185
HVAC BRANCH LINE CIRCUIT ......................186
Diagnosis Procedure ........................................... ..186
M&A BRANCH LINE CIRCUIT ........................187
Diagnosis Procedure ........................................... ..187
STRG BRANCH LINE CIRCUIT .......................188
Diagnosis Procedure ........................................... ..188
TPMS BRANCH LINE CIRCUIT .......................189
Diagnosis Procedure ........................................... ..189
IPDM-E BRANCH LINE CIRCUIT ....................190
Diagnosis Procedure ........................................... ..190
ADP BRANCH LINE CIRCUIT .........................191
Diagnosis Procedure ........................................... ..191
E-SUS BRANCH LINE CIRCUIT ......................192
Diagnosis Procedure ........................................... ..192
PWBD BRANCH LINE CIRCUIT ......................193
Diagnosis Procedure ........................................... ..193
CAN COMMUNICATION CIRCUIT ..................194
Diagnosis Procedure ........................................... ..194
CAN SYSTEM (TYPE 4)
DTC/CIRCUIT DIAGNOSIS .......................
196
MAIN LINE BETWEEN ABS AND DLC CIR-
CUIT ................................................................ ..
196
Diagnosis Procedure ........................................... ..196
MAIN LINE BETWEEN ADP AND PWBD CIR-
CUIT ..................................................................
197
Diagnosis Procedure ........................................... ..197
MAIN LINE BETWEEN RDR-R AND RDR-L
CIRCUIT ......................................................... ..
198
Diagnosis Procedure ........................................... ..198
MAIN LINE BETWEEN RDR-L AND LANE
CIRCUIT ..........................................................
199
Diagnosis Procedure ........................................... ..199
MAIN LINE BETWEEN LANE AND APA CIR-
CUIT ................................................................
201
Diagnosis Procedure .............................................201
ECM BRANCH LINE CIRCUIT .......................202
Diagnosis Procedure .............................................202
4WD BRANCH LINE CIRCUIT .......................203
Diagnosis Procedure ........................................... ..203
ABS BRANCH LINE CIRCUIT ........................204
Diagnosis Procedure .............................................204
TCM BRANCH LINE CIRCUIT ........................205
Diagnosis Procedure .............................................205
A-BAG BRANCH LINE CIRCUIT ....................206
Diagnosis Procedure .............................................206
AFS BRANCH LINE CIRCUIT ........................207
Diagnosis Procedure .............................................207
AV BRANCH LINE CIRCUIT ..........................208
Diagnosis Procedure .............................................208
BCM BRANCH LINE CIRCUIT .......................209
Diagnosis Procedure .............................................209
CGW BRANCH LINE CIRCUIT (CAN COM-
MUNICATION CIRCUIT 1) ..............................
210
Diagnosis Procedure .............................................210
CGW BRANCH LINE CIRCUIT (CAN COM-
MUNICATION CIRCUIT 2) ..............................
211
Diagnosis Procedure .............................................211
DLC BRANCH LINE CIRCUIT ........................212
Diagnosis Procedure .............................................212
HVAC BRANCH LINE CIRCUIT .....................213
Diagnosis Procedure .............................................213
M&A BRANCH LINE CIRCUIT .......................214
Diagnosis Procedure .............................................214
STRG BRANCH LINE CIRCUIT .....................215
Diagnosis Procedure .............................................215
TPMS BRANCH LINE CIRCUIT .....................216
Diagnosis Procedure .............................................216
IPDM-E BRANCH LINE CIRCUIT ...................217
Diagnosis Procedure .............................................217
ADP BRANCH LINE CIRCUIT ........................218
Diagnosis Procedure .............................................218
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LAN-6
PSB BRANCH LINE CIRCUIT .........................219
Diagnosis Procedure ........................................... ..219
E-SUS BRANCH LINE CIRCUIT .....................220
Diagnosis Procedure ........................................... ..220
ICC BRANCH LINE CIRCUIT ..........................221
Diagnosis Procedure ........................................... ..221
PWBD BRANCH LINE CIRCUIT .....................222
Diagnosis Procedure ........................................... ..222
RDR-R BRANCH LINE CIRCUIT ....................223
Diagnosis Procedure ........................................... ..223
RDR-L BRANCH LINE CIRCUIT .....................224
Diagnosis Procedure ........................................... ..224
LANE BRANCH LINE CIRCUIT .......................225
Diagnosis Procedure ............................................ .225
APA BRANCH LINE CIRCUIT .........................226
Diagnosis Procedure ............................................ .226
LASER BRANCH LINE CIRCUIT .....................227
Diagnosis Procedure ............................................ .227
CAN COMMUNICATION CIRCUIT 1 ...............228
Diagnosis Procedure ............................................ .228
CAN COMMUNICATION CIRCUIT 2 ...............230
Diagnosis Procedure ............................................ .230
ITS COMMUNICATION CIRCUIT .....................232
Diagnosis Procedure ............................................ .232
Revision: 2010 May2011 QX56
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![INFINITI QX56 2011 Factory Service Manual
LAN
PRECAUTIONSLAN-7
< PRECAUTION > [CAN FUNDAMENTAL]
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PRECAUTION
PRECAUTIONS
Precautions for Trouble DiagnosisINFOID:0000000006220510
CAUTION:
• Never apply 7.0 V or m](/img/42/57033/w960_57033-3426.png "INFINITI QX56 2011 Factory Service Manual
LAN
PRECAUTIONSLAN-7
< PRECAUTION > [CAN FUNDAMENTAL]
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PRECAUTION
PRECAUTIONS
Precautions for Trouble DiagnosisINFOID:0000000006220510
CAUTION:
• Never apply 7.0 V or m")
LAN
PRECAUTIONSLAN-7
< PRECAUTION > [CAN FUNDAMENTAL]
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PRECAUTION
PRECAUTIONS
Precautions for Trouble DiagnosisINFOID:0000000006220510
CAUTION:
• Never apply 7.0 V or more to the measurement terminal.
Use a tester with open terminal voltage of 7.0 V or less.
Turn the ignition switch OFF and disconnect th
e battery cable from the negative terminal when
checking the harness.
Precautions for Harness RepairINFOID:0000000006220511
• Solder the repaired area and wrap tape around the soldered area. NOTE:
A fray of twisted lines must be within 110 mm (4.33 in).
Bypass connection is never allowed at the repaired area. NOTE:
Bypass connection may cause CAN communication error. The
spliced wire becomes separated and t he characteristics of twisted
line are lost.
Replace the applicable harness as an assembly if error is detected on the shield lines of CAN communica-
tion line.
SKIB8766E
SKIB8767E
Revision: 2010 May2011 QX56
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![INFINITI QX56 2011 Factory Service Manual
LAN-8
< SYSTEM DESCRIPTION >[CAN FUNDAMENTAL]
SYSTEM
SYSTEM DESCRIPTION
SYSTEM
CAN COMMUNICATION SYSTEM
CAN COMMUNICATION SYSTEM
: System DescriptionINFOID:0000000006220512
CAN communication is a](/img/42/57033/w960_57033-3427.png "INFINITI QX56 2011 Factory Service Manual
LAN-8
< SYSTEM DESCRIPTION >[CAN FUNDAMENTAL]
SYSTEM
SYSTEM DESCRIPTION
SYSTEM
CAN COMMUNICATION SYSTEM
CAN COMMUNICATION SYSTEM
: System DescriptionINFOID:0000000006220512
CAN communication is a")
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".
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< SYSTEM DESCRIPTION > [CAN FUNDAMENTAL]
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CAN COMMUNICATION SYSTEM : CA
N Communication Control CircuitINFOID:0000000006220514
*: These are the only contr](/img/42/57033/w960_57033-3428.png "INFINITI QX56 2011 Factory Service Manual
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< SYSTEM DESCRIPTION > [CAN FUNDAMENTAL]
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CAN COMMUNICATION SYSTEM : CA
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*: These are the only contr")
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< SYSTEM DESCRIPTION > [CAN FUNDAMENTAL]
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CAN COMMUNICATION SYSTEM : CA
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*: These are the only control units wired with both ends of CAN communication system.
DIAG ON CAN
DIAG ON CAN : DescriptionINFOID:0000000006220515
“Diag on CAN” is a diagnosis using CAN communication instead of previous DDL1 and DDL2 communication
lines, between control units and diagnosis unit.
SKIB8713E
Component System description
CAN controller It controls CAN communication signal transmission and reception, error detection, etc.
Transceiver IC It converts digital signal into CAN communication signal, and CAN communication signal into digital
signal.
Noise filter It eliminates noise of CAN communication signal.
Termination circuit
*
(Resistance of approx. 120 Ω) It produces potential difference.
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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 C](/img/42/57033/w960_57033-3429.png "INFINITI QX56 2011 Factory Service Manual
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 C")
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