2006 INFINITI M35 belt

IP-2
PRECAUTIONS
Revision: 2006 January2006 M35/M45
PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
NIS00255
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 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 whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WAR NING :
To avoid rendering the SRS inoperative, 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 per-
formed by an authorized NISSAN/INFINITI dealer.
Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.
Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
Precautions NIS00256
Disconnect both battery cables in advance.
Disconnect air bag system line in advance.
Never tamper with or force air bag lid open, as this may adversely affect air bag performance.
Be careful not to scratch pad and other parts.
When removing or disassembling any part, be careful not to damage or deform it. Protect parts, which
may get in the way with cloth.
When removing parts with a screwdriver or other tool, protect parts by wrapping them with vinyl or tape.
Keep removed parts protected with cloth.
If a clip is deformed or damaged, replace it.
If an unreusable part is removed, replace it with a new one.
Tighten bolts and nuts firmly to the specified torque.
After re-assembly has been completed, make sure each part functions correctly.
Remove stains in the following way.
Water-soluble stains:
Dip a soft cloth in warm water, and then squeeze it tightly. After wiping the stain, wipe with a soft dry cloth.
Oil stain:
Dissolve a synthetic detergent in warm water (density of 2 to 3% or less), dip the cloth, then clean off the stain
with the cloth. Next, dip the cloth in fresh water and squeeze it tightly. Then clean off the detergent completely.
Then wipe the area with a soft dry cloth.
Do not use any organic solvent, such as thinner or benzine.

LAN-1
LAN SYSTEM
K ELECTRICAL
CONTENTS
C
D
E
F
G
H
I
J
L
M
SECTION LAN
A
B
LAN
Revision: 2006 January2006 M35/M45
LAN SYSTEM
CAN
PRECAUTIONS .......................................................... 7
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 7
Precautions When Using CONSULT-II ..................... 7
CHECK POINTS FOR USING CONSULT-II ......... 7
Precautions For Trouble Diagnosis .......................... 7
CAN SYSTEM ....................................................... 7
Precautions For Harness Repair .............................. 8
CAN SYSTEM ....................................................... 8
TROUBLE DIAGNOSES WORK FLOW .................... 9
When Displaying CAN Communication System
Errors ....................................................................... 9
WHEN A MALFUNCTION IS DETECTED BY
CAN COMMUNICATION SYSTEM ....................... 9
WHEN A MALFUNCTION IS DETECTED
EXCEPT CAN COMMUNICATION SYSTEM ........ 9
TROUBLE DIAGNOSIS FLOW CHART ............. 10
Diagnosis Procedure ............................................... 11
SELECTING CAN SYSTEM TYPE (HOW TO
USE SPECIFICATION TABLE) ............................ 11
ACQUISITION OF DATA BY CONSULT-II .......... 12
HOW TO USE CHECK SHEET TABLE .............. 14
CAN Diagnostic Support Monitor ........................... 20
DESCRIPTION OF “CAN DIAG SUPPORT
MNTR” SCREEN FOR ECM ............................... 20
DESCRIPTION OF “CAN DIAG SUPPORT
MNTR” SCREEN FOR TCM ............................... 21
DESCRIPTION OF “CAN DIAG SUPPORT
MNTR” SCREEN FOR AWD CONTROL UNIT ... 21
DESCRIPTION OF “CAN DIAG SUPPORT
MNTR” SCREEN FOR AFS CONTROL UNIT .... 22
DESCRIPTION OF “CAN DIAG SUPPORT
MNTR” SCREEN FOR BCM ............................... 23
DESCRIPTION OF “CAN DIAG SUPPORT
MNTR” SCREEN FOR LDW CAMERA UNIT ..... 24
DESCRIPTION OF “CAN DIAG SUPPORT
MNTR” SCREEN FOR LOW TIRE PRESSURE WARNING CONTROL UNIT ............................... 25
DESCRIPTION OF “CAN DIAG SUPPORT
MNTR” SCREEN FOR INTELLIGENT KEY UNIT ... 26
DESCRIPTION OF “CAN DIAG SUPPORT
M N T R ” S C R E E N F O R U N I F I E D M E T E R A N D A /
C AMP. ................................................................. 27
DESCRIPTION OF “CAN DIAG SUPPORT
MNTR” SCREEN FOR AV(NAVI) CONTROL
UNIT .................................................................... 28
DESCRIPTION OF “CAN DIAG SUPPORT
MNTR” SCREEN FOR RAS CONTROL UNIT .... 29
DESCRIPTION OF “CAN DIAG SUPPORT
M N T R ” S C R E E N F O R P R E - C R A S H S E A T B E L T
CONTROL UNIT ................................................. 30
DESCRIPTION OF “CAN DIAG SUPPORT
MNTR” SCREEN FOR DRIVER SEAT CON-
TROL UNIT ...................................................... ... 31
DESCRIPTION OF “CAN DIAG SUPPORT
MNTR” SCREEN FOR ABS ACTUATOR AND
ELECTRIC UNIT (CONTROL UNIT) ................... 31
DESCRIPTION OF “CAN DIAG SUPPORT
MNTR” SCREEN FOR ICC SENSOR INTE-
GRATED UNIT .................................................... 32
DESCRIPTION OF “CAN DIAG SUPPORT
MNTR” SCREEN FOR IPDM E/R ....................... 33
CAN COMMUNICATION ........................................... 34
System Description ................................................. 34
CAN Communication Unit ....................................... 34
SYSTEM DIAGRAM ............................................ 34
INPUT/OUTPUT SIGNAL CHART ...................... 40
CAN SYSTEM (TYPE 1) ........................................... 48
Component Parts and Harness Connector Location ... 48
Schematic ............................................................... 49
Wiring Diagram — CAN — ..................................... 50
Check Sheet ........................................................... 53
CHECK SHEET RESULTS (EXAMPLE) ............. 56
Inspection Between TCM and Data Link Connector
Circuit ..................................................................
... 72
Inspection Between Data Link Connector and Driver
Seat Control Unit Circuit ......................................
... 73

LAN-2Revision: 2006 January2006 M35/M45 Inspection Between Driver Seat Control Unit and
ABS Actuator and Electric Unit (Control Unit) Circuit ... 74
ECM Circuit Inspection ........................................... 75
TCM Circuit Inspection ........................................... 75
BCM Circuit Inspection ........................................... 76
Low Tire Pressure Warning Control Unit Circuit
Inspection ............................................................... 76
Steering Angle Sensor Circuit Inspection ............... 77
Intelligent Key Unit Circuit Inspection ..................... 77
Unified Meter and A/C Amp. Circuit Inspection ...... 78
AV Control Unit Circuit Inspection ........................... 78
Data Link Connector Circuit Inspection .................. 79
Driver Seat Control Unit Circuit Inspection ............. 79
ABS Actuator and Electric Unit (Control Unit) Circuit
Inspection ............................................................... 80
IPDM E/R Circuit Inspection ................................... 80
CAN Communication Circuit Inspection .................. 81
IPDM E/R Ignition Relay Circuit Inspection ............ 88
CAN SYSTEM (TYPE 2) ........................................... 89
Component Parts and Harness Connector Location ... 89
Schematic ............................................................... 90
Wiring Diagram — CAN — ..................................... 91
Check Sheet ........................................................... 94
CHECK SHEET RESULTS (EXAMPLE) ............. 97
Inspection Between TCM and Data Link Connector
Circuit ...................................................................113
Inspection Between Data Link Connector and Driver
Seat Control Unit Circuit ......................................
.114
Inspection Between Driver Seat Control Unit and
ABS Actuator and Electric Unit (Control Unit) Circuit .115
ECM Circuit Inspection .........................................116
TCM Circuit Inspection .........................................116
BCM Circuit Inspection .........................................117
Low Tire Pressure Warning Control Unit Circuit
Inspection .............................................................117
Steering Angle Sensor Circuit Inspection .............118
Intelligent Key Unit Circuit Inspection ...................118
Unified Meter and A/C Amp. Circuit Inspection ....119
NAVI Control Unit Circuit Inspection .....................119
Data Link Connector Circuit Inspection ................120
Driver Seat Control Unit Circuit Inspection ...........120
ABS Actuator and Electric Unit (Control Unit) Circuit
Inspection .............................................................121
IPDM E/R Circuit Inspection .................................121
CAN Communication Circuit Inspection ................122
IPDM E/R Ignition Relay Circuit Inspection ..........129
CAN SYSTEM (TYPE 3) .........................................130
Component Parts and Harness Connector Location .130
Schematic .............................................................131
Wiring Diagram — CAN — ...................................132
Check Sheet .........................................................136
CHECK SHEET RESULTS (EXAMPLE) ...........139
Inspection Between TCM and Data Link Connector
Circuit ...................................................................158
Inspection Between Data Link Connector and Pre-
Crash Seat Belt Control Unit Circuit .....................159
Inspection Between Pre-Crash Seat Belt Control
Unit and Driver Seat Control Unit Circuit ..............160
Inspection Between Driver Seat Control Unit and ABS Actuator and Electric Unit (Control Unit) Circuit .160
ECM Circuit Inspection .........................................161
TCM Circuit Inspection ......................................... .162
AFS Control Unit Circuit Inspection ......................162
BCM Circuit Inspection .........................................163
Low Tire Pressure Warning Control Unit Circuit
Inspection ..............................................................163
Steering Angle Sensor Circuit Inspection ..............164
Intelligent Key Unit Circuit Inspection ...................164
Unified Meter and A/C Amp. Circuit Inspection .....165
AV Control Unit Circuit Inspection .........................165
Data Link Connector Circuit Inspection .................166
Pre-Crash Seat Belt Control Unit Circuit Inspection .166
Driver Seat Control Unit Circuit Inspection ...........167
ABS Actuator and Electric Unit (Control Unit) Circuit
Inspection ..............................................................167
IPDM E/R Circuit Inspection .................................168
CAN Communication Circuit Inspection ................169
IPDM E/R Ignition Relay Circuit Inspection ...........176
CAN SYSTEM (TYPE 4) ..........................................177
Component Parts and Harness Connector Location .177
Schematic .............................................................178
Wiring Diagram — CAN — ...................................179
Check Sheet .........................................................183
CHECK SHEET RESULTS (EXAMPLE) ............186
Inspection Between TCM and Data Link Connector
Circuit ....................................................................205
Inspection Between Data Link Connector and Pre-
Crash Seat Belt Control Unit Circuit ......................206
Inspection Between Pre-Crash Seat Belt Control
Unit and Driver Seat Control Unit Circuit ..............207
Inspection Between Driver Seat Control Unit and
ABS Actuator and Electric Unit (Control Unit) Circuit .207
ECM Circuit Inspection .........................................208
TCM Circuit Inspection ......................................... .209
AFS Control Unit Circuit Inspection ......................209
BCM Circuit Inspection .........................................210
Low Tire Pressure Warning Control Unit Circuit
Inspection ..............................................................210
Steering Angle Sensor Circuit Inspection ..............211
Intelligent Key Unit Circuit Inspection ...................211
Unified Meter and A/C Amp. Circuit Inspection .....212
NAVI Control Unit Circuit Inspection .....................212
Data Link Connector Circuit Inspection .................213
Pre-Crash Seat Belt Control Unit Circuit Inspection .213
Driver Seat Control Unit Circuit Inspection ...........214
ABS Actuator and Electric Unit (Control Unit) Circuit
Inspection ..............................................................214
IPDM E/R Circuit Inspection ................................
.215
CAN Communication Circuit Inspection ................216
IPDM E/R Ignition Relay Circuit Inspection ...........223
CAN SYSTEM (TYPE 5) ..........................................224
Component Parts and Harness Connector Location .224
Schematic .............................................................225
Wiring Diagram — CAN — ...................................226
Check Sheet .........................................................230
CHECK SHEET RESULTS (EXAMPLE) ............233
Inspection Between TCM and Data Link Connector
Circuit ....................................................................255

LAN-3
C
D
E
F
G
H
I
J
L
MA
B
LAN
Revision: 2006 January2006 M35/M45 Inspection Between Data Link Connector and Pre-
Crash Seat Belt Control Unit Circuit .....................256
Inspection Between Pre-Crash Seat Belt Control
Unit and Driver Seat Control Unit Circuit ..............257
Inspection Between Driver Seat Control Unit and
ABS Actuator and Electric Unit (Control Unit) Circuit .257
Inspection Between ABS Actuator and Electric Unit
and ICC Sensor Integrated Unit Circuit ................258
ECM Circuit Inspection .........................................259
TCM Circuit Inspection .........................................259
AFS Control Unit Circuit Inspection ......................260
BCM Circuit Inspection .........................................260
LDW Camera Unit Circuit Inspection ...................261
Low Tire Pressure Warning Control Unit Circuit
Inspection .............................................................261
Steering Angle Sensor Circuit Inspection .............262
Intelligent Key Unit Circuit Inspection ...................262
Unified Meter and A/C Amp. Circuit Inspection ....263
NAVI Control Unit Circuit Inspection .....................263
Data Link Connector Circuit Inspection ................264
Pre-Crash Seat Belt Control Unit Circuit Inspection .264
Driver Seat Control Unit Circuit Inspection ...........265
ABS Actuator and Electric Unit (Control Unit) Circuit
Inspection .............................................................265
ICC Sensor Integrated Unit Circuit Inspection .....266
IPDM E/R Circuit Inspection .................................266
CAN Communication Circuit Inspection ...............267
IPDM E/R Ignition Relay Circuit Inspection ..........274
CAN SYSTEM (TYPE 6) .........................................275
Component Parts and Harness Connector Location .275
Schematic ............................................................276
Wiring Diagram — CAN — ...................................277
Check Sheet .........................................................281
CHECK SHEET RESULTS (EXAMPLE) ...........284
Inspection Between TCM and Data Link Connector
Circuit ...................................................................303
Inspection Between Data Link Connector and RAS
Control Unit Circuit ...............................................304
Inspection Between RAS Control Unit and Driver
Seat Control Unit Circuit ......................................
.305
Inspection Between Driver Seat Control Unit and
ABS Actuator and Electric Unit (Control Unit) Circuit .305
ECM Circuit Inspection .........................................306
TCM Circuit Inspection .........................................306
AFS Control Unit Circuit Inspection ......................307
BCM Circuit Inspection .........................................307
Low Tire Pressure Warning Control Unit Circuit
Inspection .............................................................308
Steering Angle Sensor Circuit Inspection .............308
Intelligent Key Unit Circuit Inspection ...................309
Unified Meter and A/C Amp. Circuit Inspection ....309
AV Control Unit Circuit Inspection ........................310
Data Link Connector Circuit Inspection ................310
RAS Control Unit Circuit Inspection ...................... 311
Driver Seat Control Unit Circuit Inspection ............ 311
ABS Actuator and Electric Unit (Control Unit) Circuit
Inspection ............................................................
.312
IPDM E/R Circuit Inspection .................................312CAN Communication Circuit Inspection ...............313
IPDM E/R Ignition Relay Circuit Inspection ..........320
CAN SYSTEM (TYPE 7) .........................................321
Component Parts and Harness Connector Location .321
Schematic .............................................................322
Wiring Diagram — CAN — ...................................323
Check Sheet .........................................................327
CHECK SHEET RESULTS (EXAMPLE) ...........330
Inspection Between TCM and Data Link Connector
Circuit ...................................................................349
Inspection Between Data Link Connector and RAS
Control Unit Circuit ...............................................350
Inspection Between RAS Control Unit and Driver
Seat Control Unit Circuit ......................................
.351
Inspection Between Driver Seat Control Unit and
ABS Actuator and Electric Unit (Control Unit) Circuit .351
ECM Circuit Inspection .........................................352
TCM Circuit Inspection .........................................352
AFS Control Unit Circuit Inspection ......................353
BCM Circuit Inspection .........................................353
Low Tire Pressure Warning Control Unit Circuit
Inspection .............................................................354
Steering Angle Sensor Circuit Inspection .............354
Intelligent Key Unit Circuit Inspection ...................355
Unified Meter and A/C Amp. Circuit Inspection ....355
NAVI Control Unit Circuit Inspection .....................356
Data Link Connector Circuit Inspection ................356
RAS Control Unit Circuit Inspection ......................357
Driver Seat Control Unit Circuit Inspection ...........357
ABS Actuator and Electric Unit (Control Unit) Circuit
Inspection .............................................................358
IPDM E/R Circuit Inspection .................................358
CAN Communication Circuit Inspection ...............359
IPDM E/R Ignition Relay Circuit Inspection ..........366
CAN SYSTEM (TYPE 8) .........................................367
Component Parts and Harness Connector Location .367
Schematic .............................................................368
Wiring Diagram — CAN — ...................................369
Check Sheet .........................................................373
CHECK SHEET RESULTS (EXAMPLE) ...........376
Inspection Between TCM and Data Link Connector
Circuit ...................................................................397
Inspection Between Data Link Connector and RAS
Control Unit Circuit ...............................................398
Inspection Between RAS Control Unit and Pre-
Crash Seat Belt Control Unit Circuit .....................399
Inspection Between Pre-Crash Seat Belt Control
Unit and Driver Seat Control Unit Circuit ..............399
Inspection Between Driver Seat Control Unit and
ABS Actuator and Electric Unit (Control Unit) Circuit .400
ECM Circuit Inspection .........................................400
TCM Circuit Inspection .........................................401
AFS Control Unit Circuit Inspection ......................402
BCM Circuit Inspection .........................................402
Low Tire Pressure Warning Control Unit Circuit
Inspection ............................................................
.403
Steering Angle Sensor Circuit Inspection .............403
Intelligent Key Unit Circuit Inspection ...................404
Unified Meter and A/C Amp. Circuit Inspection ....404

LAN-4Revision: 2006 January2006 M35/M45 AV Control Unit Circuit Inspection .........................405
Data Link Connector Circuit Inspection ................405
RAS Control Unit Circuit Inspection ......................406
Pre-Crash Seat Belt Control Unit Circuit Inspection .406
Driver Seat Control Unit Circuit Inspection ...........407
ABS Actuator and Electric Unit (Control Unit) Circuit
Inspection .............................................................407
IPDM E/R Circuit Inspection .................................408
CAN Communication Circuit Inspection ................409
IPDM E/R Ignition Relay Circuit Inspection ..........416
CAN SYSTEM (TYPE 9) .........................................417
Component Parts and Harness Connector Location .417
Schematic .............................................................418
Wiring Diagram — CAN — ...................................419
Check Sheet .........................................................423
CHECK SHEET RESULTS (EXAMPLE) ...........426
Inspection Between TCM and Data Link Connector
Circuit ...................................................................447
Inspection Between Data Link Connector and RAS
Control Unit Circuit ...............................................448
Inspection Between RAS Control Unit and Pre-
Crash Seat Belt Control Unit Circuit .....................449
Inspection Between Pre-Crash Seat Belt Control
Unit and Driver Seat Control Unit Circuit ..............449
Inspection Between Driver seat control unit and ABS
Actuator and Electric Unit (Control Unit) Circuit ....450
ECM Circuit Inspection .........................................450
TCM Circuit Inspection .........................................451
AFS Control Unit Circuit Inspection ......................452
BCM Circuit Inspection .........................................452
Low Tire Pressure Warning Control Unit Circuit
Inspection .............................................................453
Steering Angle Sensor Circuit Inspection .............453
Intelligent Key Unit Circuit Inspection ...................454
Unified Meter and A/C Amp. Circuit Inspection ....454
NAVI Control Unit Circuit Inspection .....................455
Data Link Connector Circuit Inspection ................455
RAS Control Unit Circuit Inspection ......................456
Pre-Crash Seat Belt Control Unit Circuit Inspection .456
Driver Seat Control Unit Circuit Inspection ...........457
ABS Actuator and Electric Unit (Control Unit) Circuit
Inspection .............................................................457
IPDM E/R Circuit Inspection .................................458
CAN Communication Circuit Inspection ................459
IPDM E/R Ignition Relay Circuit Inspection ..........466
CAN SYSTEM (TYPE 10) .......................................467
Component Parts and Harness Connector Location .467
Schematic .............................................................468
Wiring Diagram — CAN — ...................................469
Check Sheet .........................................................473
CHECK SHEET RESULTS (EXAMPLE) ...........476
Inspection Between TCM and Data Link Connector
Circuit ...................................................................500
Inspection Between Data Link Connector and RAS
Control Unit Circuit ...............................................501
Inspection Between RAS Control Unit and Pre-
Crash Seat Belt Control Unit Circuit .....................502
Inspection Between Pre-Crash Seat Belt Control
Unit and Driver Seat Control Unit Circuit ..............502Inspection Between Driver Seat Control Unit and
ABS Actuator and Electric Unit (Control Unit) Circuit .503
Inspection Between ABS Actuator and Electric Unit
and ICC Sensor Integrated Unit Circuit .................504
ECM Circuit Inspection .........................................504
TCM Circuit Inspection ......................................... .505
AFS Control Unit Circuit Inspection ......................505
BCM Circuit Inspection .........................................506
LDW Camera Unit Circuit Inspection ....................506
Low Tire Pressure Warning Control Unit Circuit
Inspection ..............................................................507
Steering Angle Sensor Circuit Inspection ..............507
Intelligent Key Unit Circuit Inspection ...................508
Unified Meter and A/C Amp. Circuit Inspection .....508
NAVI Control Unit Circuit Inspection .....................509
Data Link Connector Circuit Inspection .................509
RAS Control Unit Circuit Inspection ......................510
Pre-Crash Seat Belt Control Unit Circuit Inspection .510
Driver Seat Control Unit Circuit Inspection ...........511
ABS Actuator and Electric Unit (Control Unit) Circuit
Inspection ..............................................................511
ICC Sensor Integrated Unit Circuit Inspection ......512
IPDM E/R Circuit Inspection .................................512
CAN Communication Circuit Inspection ................513
IPDM E/R Ignition Relay Circuit Inspection ...........520
CAN SYSTEM (TYPE 11) ........................................521
Component Parts and Harness Connector Location .521
Schematic .............................................................522
Wiring Diagram — CAN — ...................................523
Check Sheet .........................................................526
CHECK SHEET RESULTS (EXAMPLE) ............529
Inspection Between TCM and Data Link Connector
Circuit ....................................................................546
Inspection Between Data Link Connector and Driver
Seat Control Unit Circuit .......................................547
Inspection Between Driver Seat Control Unit and
ABS Actuator and Electric Unit (Control Unit) Circuit .548
ECM Circuit Inspection .........................................549
TCM Circuit Inspection ......................................... .549
AWD Control Unit Circuit Inspection .....................550
BCM Circuit Inspection .........................................550
Low Tire Pressure Warning Control Unit Circuit
Inspection ..............................................................551
Steering Angle Sensor Circuit Inspection ..............551
Intelligent Key Unit Circuit Inspection ...................552
Unified Meter and A/C Amp. Circuit Inspection .....552
AV Control Unit Circuit Inspection .........................553
Data Link Connector Circuit Inspection ................
.553
Driver Seat Control Unit Circuit Inspection ...........554
ABS Actuator and Electric Unit (Control Unit) Circuit
Inspection ..............................................................554
IPDM E/R Circuit Inspection .................................555
CAN Communication Circuit Inspection ................556
IPDM E/R Ignition Relay Circuit Inspection ...........563
CAN SYSTEM (TYPE 12) ........................................564
Component Parts and Harness Connector Location .564
Schematic .............................................................565
Wiring Diagram — CAN — ...................................566
Check Sheet .........................................................569

LAN-5
C
D
E
F
G
H
I
J
L
MA
B
LAN
Revision: 2006 January2006 M35/M45 CHECK SHEET RESULTS (EXAMPLE) ...........572
Inspection Between TCM and Data Link Connector
Circuit ...................................................................589
Inspection Between Data Link Connector and Driver
Seat Control Unit Circuit ......................................
.590
Inspection Between Driver Seat Control Unit and
ABS Actuator and Electric Unit (Control Unit) Circuit .591
ECM Circuit Inspection .........................................592
TCM Circuit Inspection .........................................592
AWD Control Unit Circuit Inspection ....................593
BCM Circuit Inspection .........................................593
Low Tire Pressure Warning Control Unit Circuit
Inspection .............................................................594
Steering Angle Sensor Circuit Inspection .............594
Intelligent Key Unit Circuit Inspection ...................595
Unified Meter and A/C Amp. Circuit Inspection ....595
NAVI Control Unit Circuit Inspection .....................596
Data Link Connector Circuit Inspection ................596
Driver Seat Control Unit Circuit Inspection ...........597
ABS Actuator and Electric Unit (Control Unit) Circuit
Inspection .............................................................597
IPDM E/R Circuit Inspection .................................598
CAN Communication Circuit Inspection ...............599
IPDM E/R Ignition Relay Circuit Inspection ..........606
CAN SYSTEM (TYPE 13) .......................................607
Component Parts and Harness Connector Location .607
Schematic ............................................................608
Wiring Diagram — CAN — ...................................609
Check Sheet .........................................................613
CHECK SHEET RESULTS (EXAMPLE) ...........616
Inspection Between TCM and Data Link Connector
Circuit ...................................................................636
Inspection Between Data Link Connector and Pre-
Crash Seat Belt Control Unit Circuit .....................637
Inspection Between Pre-Crash Seat Belt Control
Unit and Driver Seat Control Unit Circuit ..............638
Inspection Between Driver Seat Control Unit and
ABS Actuator and Electric Unit (Control Unit) Circuit .638
ECM Circuit Inspection .........................................639
TCM Circuit Inspection .........................................640
AWD Control Unit Circuit Inspection ....................640
AFS Control Unit Circuit Inspection ......................641
BCM Circuit Inspection .........................................641
Low Tire Pressure Warning Control Unit Circuit
Inspection .............................................................642
Steering Angle Sensor Circuit Inspection .............642
Intelligent Key Unit Circuit Inspection ...................643
Unified Meter and A/C Amp. Circuit Inspection ....643
AV Control Unit Circuit Inspection ........................644
Data Link Connector Circuit Inspection ................644
Pre-Crash Seat Belt Control Unit Circuit Inspection .645
Driver Seat Control Unit Circuit Inspection ...........645
ABS Actuator and Electric Unit (Control Unit) Circuit
Inspection .............................................................646
IPDM E/R Circuit Inspection .................................646
CAN Communication Circuit Inspection ...............647
IPDM E/R Ignition Relay Circuit Inspection ..........655
CAN SYSTEM (TYPE 14) .......................................656
Component Parts and Harness Connector Location .656Schematic .............................................................657
Wiring Diagram — CAN — ...................................658
Check Sheet .........................................................662
CHECK SHEET RESULTS (EXAMPLE) ...........665
Inspection Between TCM and Data Link Connector
Circuit ...................................................................685
Inspection Between Data Link Connector and Pre-
Crash Seat Belt Control Unit Circuit .....................686
Inspection Between Pre-Crash Seat Belt Control
Unit and Driver Seat Control Unit Circuit ..............687
Inspection Between Driver Seat Control Unit and
ABS Actuator and Electric Unit (Control Unit) Circuit .687
ECM Circuit Inspection .........................................688
TCM Circuit Inspection .........................................689
AWD Control Unit Circuit Inspection .....................689
AFS Control Unit Circuit Inspection ......................690
BCM Circuit Inspection .........................................690
Low Tire Pressure Warning Control Unit Circuit
Inspection .............................................................691
Steering Angle Sensor Circuit Inspection .............691
Intelligent Key Unit Circuit Inspection ...................692
Unified Meter and A/C Amp. Circuit Inspection ....692
NAVI Control Unit Circuit Inspection .....................693
Data Link Connector Circuit Inspection ................693
Pre-Crash Seat Belt Control Unit Circuit Inspection .694
Driver Seat Control Unit Circuit Inspection ...........694
ABS Actuator and Electric Unit (Control Unit) Circuit
Inspection .............................................................695
IPDM E/R Circuit Inspection .................................695
CAN Communication Circuit Inspection ...............696
IPDM E/R Ignition Relay Circuit Inspection ..........704
CAN SYSTEM (TYPE 15) .......................................705
Component Parts and Harness Connector Location .705
Schematic .............................................................706
Wiring Diagram — CAN — ...................................707
Check Sheet .........................................................711
CHECK SHEET RESULTS (EXAMPLE) ...........714
Inspection Between TCM and Data Link Connector
Circuit ...................................................................737
Inspection Between Data Link Connector and Pre-
Crash Seat Belt Control Unit Circuit .....................738
Inspection Between Pre-Crash Seat Belt Control
Unit and Driver Seat Control Unit Circuit ..............739
Inspection Between Driver Seat Control Unit and
ABS Actuator and Electric Unit (Control Unit) Circuit .739
Inspection Between ABS Actuator and Electric Unit
and ICC Sensor Integrated Unit Circuit ................740
ECM Circuit Inspection .........................................741
TCM Circuit Inspection .........................................741
AWD Control Unit Circuit Inspection .....................742
AFS Control Unit Circuit Inspection ......................742
BCM Circuit Inspection .........................................743
LDW Camera Unit Circuit Inspection ....................743
Low Tire Pressure Warning Control Unit Circuit
Inspection .............................................................744
Steering Angle Sensor Circuit Inspection .............744
Intelligent Key Unit Circuit Inspection ...................745
Unified Meter and A/C Amp. Circuit Inspection ....745
NAVI Control Unit Circuit Inspection .....................746

LAN-6Revision: 2006 January2006 M35/M45 Data Link Connector Circuit Inspection ................746
Pre-Crash Seat Belt Control Unit Circuit Inspection .747
Driver Seat Control Unit Circuit Inspection ...........747
ABS Actuator and Electric Unit (Control Unit) Circuit
Inspection .............................................................748ICC Sensor Integrated Unit Circuit Inspection ......748
IPDM E/R Circuit Inspection .................................749
CAN Communication Circuit Inspection ................750
IPDM E/R Ignition Relay Circuit Inspection ...........758

PRECAUTIONS
LAN-7
[CAN]
C
D
E
F
G
H
I
J
L
MA
B
LAN
Revision: 2006 January2006 M35/M45
[CAN]PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
NKS003XO
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 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 whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WAR NING :
To avoid rendering the SRS inoperative, 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 per-
formed by an authorized NISSAN/INFINITI dealer.
Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.
Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
Precautions When Using CONSULT-IINKS003XP
When connecting CONSULT-II to data link connector, connect them through CONSULT-II CONVERTER.
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carry out CAN communication.
CHECK POINTS FOR USING CONSULT-II
1. Has CONSULT-II been used without connecting CONSULT-II CONVERTER on this vehicle?
–If YES, GO TO 2.
–If NO, GO TO 5.
2. Is there any indication other than indications relating to CAN communication system in the self-diagnosis
results?
–If YES, GO TO 3.
–If NO, GO TO 4.
3. Based on self-diagnosis results unrelated to CAN communication, carry out the inspection.
4. Malfunctions may be detected in self-diagnosis depending on control units carrying out CAN communica-
tion. Therefore, erase the self-diagnosis results.
5. Diagnose CAN communication system. Refer to LAN-9, "
TROUBLE DIAGNOSES WORK FLOW" .
Precautions For Trouble DiagnosisNKS003XQ
CAN SYSTEM
Do not apply voltage of 7.0 V or higher to the measurement terminals.
Use the tester with its open terminal voltage being 7.0 V or less.
Be sure to turn ignition switch OFF and disconnect the battery cable from the negative terminal before
checking the circuit.