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LAN SYSTEM
K ELECTRICAL
SECTION LAN B
LAN SYSTEM
C
D
E
CONTENTS
CAN
F
ELECTRIC UNIT (CONTROL UNIT) .................. 18
DESCRIPTION OF “CAN DIAG SUPPORT
MNTR” SCREEN FOR TCM ............................... 20
DESCRIPTION OF “CAN DIAG SUPPORT
MNTR” SCREEN FOR IPDM E/R ...................... 20
CAN COMMUNICATION .......................................... 21
System Description ................................................ 21
Component Parts and Harness Connector Location... 21
LHD MODEL ...................................................... 21
RHD MODEL ...................................................... 22
Wiring Diagram — CAN — .................................... 23
CR14DE/HR16DE MODEL ................................ 23
K9K MODEL ....................................................... 25
CAN Communication Unit ...................................... 27
TYPE 1/TYPE 2 .................................................. 28
TYPE 3/TYPE 4 .................................................. 30
TYPE 5/TYPE 6 .................................................. 32
TYPE 7/TYPE 8 .................................................. 34
TYPE 9/TYPE 10 ................................................ 36
CAN SYSTEM (TYPE 1) .......................................... 38
Component Parts and Harness Connector Location... 38
Wiring Diagram — CAN — .................................... 38
Check Sheet .......................................................... 38
Check Sheet .......................................................... 39
CHECK SHEET RESULTS (EXAMPLE) ............ 41
CAN SYSTEM (TYPE 2) .......................................... 51
Component Parts and Harness Connector Location... 51
Wiring Diagram — CAN — .................................... 51
Check Sheet .......................................................... 51
Check Sheet .......................................................... 52
CHECK SHEET RESULTS (EXAMPLE) ............ 54
CAN SYSTEM (TYPE 3) .......................................... 65
Component Parts and Harness Connector Location... 65
Wiring Diagram — CAN — .................................... 65
Check Sheet .......................................................... 65
Check Sheet .......................................................... 66
CHECK SHEET RESULTS (EXAMPLE) ............ 68
CAN SYSTEM (TYPE 4) .......................................... 79
Component Parts and Harness Connector Location... 79
Wiring Diagram — CAN — .................................... 79
PRECAUTIONS ......................................................... 3
Precautions for Supplemental Restraint System
(SRS)“AIRBAG”and“SEATBELTPRE-TEN-
SIONER” ................................................................. 3
Maintenance Information ......................................... 3
RHD MODELS ..................................................... 3
LHD MODELS ...................................................... 3
Precautions When Using CONSULT-II .................... 3
CHECK POINTS FOR USING CONSULT-II ........ 3
Precautions for Trouble Diagnosis .......................... 4
CAN SYSTEM ...................................................... 4
Precautions for Harness Repair .............................. 4
CAN SYSTEM ...................................................... 4
TROUBLE DIAGNOSES WORK FLOW ................... 5
When Displaying CAN Communication System
Errors ...................................................................... 5
WHEN A MALFUNCTION IS DETECTED BY
CAN COMMUNICATION SYSTEM ...................... 5
WHEN A MALFUNCTION IS DETECTED
EXCEPT CAN COMMUNICATION SYSTEM ....... 5
TROUBLE DIAGNOSIS FLOW CHART .............. 6
Diagnosis Procedure ............................................... 7
SELECTING CAN SYSTEM TYPE (HOW TO
USE SPECIFICATION TABLE) ............................ 7
ACQUISITION OF DATA BY CONSULT-II ........... 8
HOW TO USE CHECK SHEET TABLE ............... 9
CAN Diagnostic Support Monitor .......................... 15
DESCRIPTION OF “CAN DIAG SUPPORT
MNTR” SCREEN FOR ECM .............................. 15
DESCRIPTION OF “CAN DIAG SUPPORT
MNTR” SCREEN FOR INTELLIGENT KEY UNI ... 17
DESCRIPTION OF “CAN DIAG SUPPORT
MNTR” SCREEN FOR EPS CONTROL UNIT ... 17
DESCRIPTION OF “CAN DIAG SUPPORT
MNTR” SCREEN FOR BCM .............................. 18
DESCRIPTION OF “CAN DIAG SUPPORT
MNTR” SCREEN FOR ABS ACTUATOR AND
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LAN
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LAN-1
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Check Sheet .......................................................... 79
Check Sheet .......................................................... 80
CHECK SHEET RESULTS (EXAMPLE) ............ 82
CAN SYSTEM (TYPE 5) .......................................... 94
Component Parts and Harness Connector Location... 94
Wiring Diagram — CAN — .................................... 94
Check Sheet .......................................................... 94
Check Sheet .......................................................... 95
CHECK SHEET RESULTS (EXAMPLE) ............ 97
CAN SYSTEM (TYPE 6) .........................................108
Component Parts and Harness Connector Location.108
Wiring Diagram — CAN — ...................................108
Check Sheet .........................................................108
Check Sheet .........................................................109
CHECK SHEET RESULTS (EXAMPLE) ...........111
CAN SYSTEM (TYPE 7) .........................................123
Component Parts and Harness Connector Location.123
Wiring Diagram — CAN — ...................................123
Check Sheet .........................................................123
Check Sheet .........................................................124
CHECK SHEET RESULTS (EXAMPLE) ...........126
CAN SYSTEM (TYPE 8) .........................................136
Component Parts and Harness Connector Location.136
Wiring Diagram — CAN — ...................................136
Check Sheet .........................................................136
Check Sheet .........................................................137
CHECK SHEET RESULTS (EXAMPLE) ...........139
CAN SYSTEM (TYPE 9) .........................................150
Component Parts and Harness Connector Location.150
Wiring Diagram — CAN — ..................................150
Check Sheet ........................................................150
Check Sheet ........................................................151
CHECK SHEET RESULTS (EXAMPLE) ...........153
CAN SYSTEM (TYPE 10) .......................................164
Component Parts and Harness Connector Location.164
Wiring Diagram — CAN — ..................................164
Check Sheet ........................................................164
Check Sheet ........................................................165
CHECK SHEET RESULTS (EXAMPLE) ...........167
TROUBLE DIAGNOSIS FOR SYSTEM .................179
Inspection Between Data Link Connector and ABS
Actuator and Electric Unit (Control Unit) Circuit ...179
ECM Circuit Inspection ........................................180
Data Link Connector Circuit Inspection ................182
Data Link Connector and CAN Communication Cir-
cuit Inspection ......................................................182
Combination Meter Circuit Inspection ..................184
Intelligent Key Unit Circuit Inspection ..................184
Steering Angle Sensor Circuit Inspection .............185
EPS Control Unit Circuit Inspection .....................185
BCM Circuit Inspection ........................................186
ABS Actuator and Electric Unit (Control Unit) Circuit
Inspection .............................................................186
TCM Circuit Inspection .........................................187
IPDM E/R Circuit Inspection ................................188
CAN Communication Circuit Inspection ...............188
IPDM E/R Ignition Relay Circuit Inspection ..........190
LAN-2
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PRECAUTIONS
[CAN]
PRECAUTIONS PFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
[CAN]
A
BKS001IN
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. Information necessary to service the system safely is included in the SRS and SB section of
this Service Manual.
WARNING:
l 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.
l 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.
l 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.
Maintenance Information
B
C
D
E
F
BKS0028M
If any of following part is replaced, always replace with new* one.
If it's not (or fail to do so), the electrical system may not be operated properly.
*: New one means a virgin control unit that has never been energized on-board.
RHD MODELS
l BCM (Models without Intelligent Key system)
l Intelligent Key unit (Models with Intelligent Key system)
l ECM
l IPDM E/R
l Combination meter
l EPS control unit
LHD MODELS
l BCM (Models without Intelligent Key system)
l Intelligent Key unit (Models with Intelligent Key system)
l ECM
Precautions When Using CONSULT-II
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BKS001IO
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.
M
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-diagnostic
results?
If YES, GO TO 3.
–
If NO, GO TO 4.
–
3.
Based on self-diagnostic 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-5, " TROUBLE DIAGNOSES WORK FLOW" .
LAN-3
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PRECAUTIONS
[CAN]
Precautions for Trouble Diagnosis
BKS001IP
CAN SYSTEM
l Do not apply voltage of 7.0 V or higher to the measurement terminals.
l Use the tester with its open terminal voltage being 7.0 V or less.
l Be sure to turn ignition switch OFF and disconnect the battery cable from the negative terminal before
checking the circuit.
Precautions for Harness Repair
BKS001IQ
CAN SYSTEM
l
Solder the repaired parts, and wrap with tape. [Frays of twisted
line must be within 110 mm (4.33 in).]
PKIA0306E
Do not perform bypass wire connections for the repair parts.
(The spliced wire will become separated and the characteristics
of twisted line will be lost.)
l
PKIA0307E
LAN-4
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TROUBLE DIAGNOSES WORK FLOW
[CAN]
TROUBLE DIAGNOSES WORK FLOW
PFP:00004
A
When Displaying CAN Communication System Errors
BKS001HW
WHEN A MALFUNCTION IS DETECTED BY CAN COMMUNICATION SYSTEM
l CAN communication line is open. (CAN-H, CAN-L, or both)
l CAN communication line is shorted. (Ground, between CAN lines, or other harnesses)
l The areas related to CAN communication of unit is malfunctioning.
WHEN A MALFUNCTION IS DETECTED EXCEPT CAN COMMUNICATION SYSTEM
l
B
C
Removal and installation of parts: When the units that perform CAN communication or the sensors related
to CAN communication are removed and installed, malfunction may be detected (or DTC other than CAN
communication may be detected).
D
Fuse blown out (removed): CAN communication of the unit may be stopped at such time.
l
Low voltage: If the voltage decreases because of battery discharge when ignition switch is ON, malfunc-
tion may be detected by self-diagnosis according to the units.
l
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LAN
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LAN-5
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