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lan

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K ELECTRICAL

SECTION LAN LAN SYSTEM
B

E
CONTENTS
CAN MNTR" SCREEN FOR ABS ACTUATOR AND F
ELECTRIC UNIT (CONTROL UNIT) .................. 19 .
PRECAUTIONS ......................................................... 3 . DESCRIPTION OF "CAN DIAG SUPPORT
Precautions for Supplemental Restraint System MNTR" SCREEN FOR IPDM E/R ...................... 20 . G
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- CAN COMMUNICATION .......................................... 21 .
SIONER" ................................................................. 3
. System Description ................................................ 21
.
Precautions When Using CONSULT-II .................... 3 . Component Parts and Harness Connector Location 21 ...
CHECK POINTS FOR USING CONSULT-II ........ 3 . H
Schematic .............................................................. 22
.
Precautions for Trouble Diagnosis .......................... 3 . Wiring Diagram -- CAN -- .................................... 23 .
CAN SYSTEM ...................................................... 3 . CAN Communication Unit ...................................... 26 .
Precautions for Harness Repair .............................. 4 . TYPE 1 ............................................................... 27
. I
CAN SYSTEM ...................................................... 4 . TYPE 2 ............................................................... 28
.
TROUBLE DIAGNOSES WORK FLOW ................... 5 . TYPE 3/TYPE 4 .................................................. 30 .
When Displaying CAN Communication System TYPE 5/TYPE 6 .................................................. 33 . J
Errors ...................................................................... 5
. CAN SYSTEM (TYPE 1) .......................................... 36 .
WHEN A MALFUNCTION IS DETECTED BY Component Parts and Harness Connector Location 36 ...
CAN COMMUNICATION SYSTEM ...................... 5 . Schematic .............................................................. 36
.
WHEN A MALFUNCTION IS DETECTED LAN
Wiring Diagram -- CAN -- .................................... 36 .
EXCEPT CAN COMMUNICATION SYSTEM ....... 5 . Check Sheet .......................................................... 37
.
TROUBLE DIAGNOSIS FLOW CHART .............. 6 . CHECK SHEET RESULTS (EXAMPLE) ............ 39 .
Diagnosis Procedure ............................................... 7 . CAN SYSTEM (TYPE 2) .......................................... 48 . L
SELECTING CAN SYSTEM TYPE (HOW TO Component Parts and Harness Connector Location 48 ...
USE SPECIFICATION TABLE) ............................ 7 . Schematic .............................................................. 48
.
ACQUISITION OF DATA BY CONSULT-II ........... 8 . Wiring Diagram -- CAN -- .................................... 48 . M
HOW TO USE CHECK SHEET TABLE ............... 9 . Check Sheet .......................................................... 49
.
CAN Diagnostic Support Monitor .......................... 15 . CHECK SHEET RESULTS (EXAMPLE) ............ 51 .
DESCRIPTION OF "CAN DIAG SUPPORT CAN SYSTEM (TYPE 3) .......................................... 62 .
MNTR" SCREEN FOR ECM .............................. 15 . Component Parts and Harness Connector Location 62 ...
DESCRIPTION OF "CAN DIAG SUPPORT Schematic .............................................................. 62
.
MNTR" SCREEN FOR TCM .............................. 16 . Wiring Diagram -- CAN -- .................................... 62 .
DESCRIPTION OF "CAN DIAG SUPPORT Check Sheet .......................................................... 63
.
MNTR" SCREEN FOR DIFFERENTIAL LOCK CHECK SHEET RESULTS (EXAMPLE) ............ 65 .
CONTROL UNIT ................................................ 16 . CAN SYSTEM (TYPE 4) .......................................... 75 .
DESCRIPTION OF "CAN DIAG SUPPORT Component Parts and Harness Connector Location 75 ...
MNTR" SCREEN FOR BCM .............................. 17 . Schematic .............................................................. 75
.
DESCRIPTION OF "CAN DIAG SUPPORT Wiring Diagram -- CAN -- .................................... 75 .
MNTR" SCREEN FOR METER ......................... 18 . Check Sheet .......................................................... 76
.
DESCRIPTION OF "CAN DIAG SUPPORT CHECK SHEET RESULTS (EXAMPLE) ............ 78 .
MNTR" SCREEN FOR TRANSFER CONTROL CAN SYSTEM (TYPE 5) .......................................... 89 .
UNIT ................................................................... 19
. Component Parts and Harness Connector Location 89 ...
DESCRIPTION OF "CAN DIAG SUPPORT

Revision: September 2005 LAN-1 2006 Xterra
Schematic .............................................................. 89
. Actuator and Electric Unit (Control Unit) Circuit ... 121 .
Wiring Diagram -- CAN -- .................................... 89 . ECM Circuit Inspection ........................................ 122 .
Check Sheet .......................................................... 90. TCM Circuit Inspection ......................................... 123 .
CHECK SHEET RESULTS (EXAMPLE) ............ 92 . Differential Lock Control Unit Circuit Inspection ... 123 .
CAN SYSTEM (TYPE 6) ........................................ 104 . Steering Angle Sensor Circuit Inspection ............. 124 .
Component Parts and Harness Connector Location 104 . Data Link Connector Circuit Inspection ................ 124 .
Schematic ............................................................ 104
. BCM Circuit Inspection ........................................ 125 .
Wiring Diagram -- CAN -- .................................. 104 . Combination Meter Circuit Inspection .................. 125 .
Check Sheet ........................................................ 105 . Transfer Control Unit Circuit Inspection ............... 126 .
CHECK SHEET RESULTS (EXAMPLE) .......... 107 . ABS Actuator and Electric Unit (Control Unit) Circuit
TROUBLE DIAGNOSIS FOR SYSTEM ................. 120 . Inspection ............................................................. 126
.
Inspection Between TCM and Data Link Connector IPDM E/R Circuit Inspection ................................ 127 .
Circuit .................................................................. 120
. CAN Communication Circuit Inspection ............... 127 .
Inspection Between Data Link Connector and ABS IPDM E/R Ignition Relay Circuit Inspection .......... 128 .

Revision: September 2005 LAN-2 2006 Xterra
PRECAUTIONS
[CAN]
PRECAUTIONS PFP:00001
A
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" UKS0017I

The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along B
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 C
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.
WARNING: D
G 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. E
G 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. F
G 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.
G
Precautions When Using CONSULT-II UKS0017J

When connecting CONSULT-II to data link connector, connect them through CONSULT-II CONVERTER.
H
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.
I
CHECK POINTS FOR USING CONSULT-II
1. Has CONSULT-II been used without connecting CONSULT-II CONVERTER on this vehicle?

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