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lan

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LAN SYSTEM

K ELECTRICAL

SECTION LAN LAN SYSTEM
B

E
CONTENTS
CAN Check .................................................................... 34
. F
IPDM E/R Circuit Check ........................................ 34 .
PRECAUTIONS ......................................................... 3 . CAN Communication Circuit Check ....................... 35 .
Precautions for Supplemental Restraint System IPDM E/R Ignition Relay Circuit Check ................. 37 . G
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- Component Inspection ........................................... 37 .
SIONER" ................................................................. 3
. ECM/IPDM E/R INTERNAL CIRCUIT INSPEC-
Precautions for Battery Service ............................... 3 . TION ................................................................... 37
.
Precautions When Using CONSULT-II .................... 3 . H
CAN SYSTEM (TYPE 2) .......................................... 38 .
CHECK POINTS FOR USING CONSULT-II ........ 4 . System Description ................................................ 38 .
Precautions For Trouble Diagnosis ......................... 4 . Component Parts and Harness Connector Location 38 ...
CAN SYSTEM ...................................................... 4 . Wiring Diagram -- CAN -- .................................... 39 . I
Precautions For Harness Repair ............................. 4 . Work Flow .............................................................. 41
.
CAN SYSTEM ...................................................... 4 . CHECK SHEET .................................................. 42 .
CAN COMMUNICATION ........................................... 5 . CHECK SHEET RESULTS (EXAMPLE) ............ 44 . J
System Description ................................................. 5 . Circuit Check Between Data Link Connector and
CAN Communication Unit ....................................... 5 . Unified Meter and A/C Amp. .................................. 54 .
TYPE 1 ................................................................. 5
. Circuit Check Between Unified Meter and A/C Amp.
TYPE 2 ................................................................. 7
. LAN
and BCM ................................................................ 54
.
TYPE 3 ................................................................. 8
. Circuit Check Between BCM and ABS Actuator and
TYPE 4 ................................................................. 9
. Electric Unit (Control Unit) ..................................... 54 .
CAN SYSTEM (TYPE 1) ...........................................11 . ECM Circuit Check ................................................ 55 . L
System Description ................................................11 . Data Link Connector Circuit Check ....................... 56 .
Component Parts and Harness Connector Location ....11 Unified Meter and A/C Amp. Circuit Check ........... 56 .
Wiring Diagram -- CAN -- .................................... 12 . BCM Circuit Check ................................................ 57 . M
Work Flow ............................................................. 14
. ABS Actuator and Electric Unit (Control Unit) Circuit
CHECK SHEET .................................................. 15 . Check .................................................................... 57
.
CHECK SHEET RESULTS (EXAMPLE) ............ 17 . IPDM E/R Circuit Check ........................................ 58 .
Circuit Check Between TCM and Data Link Con- CAN Communication Circuit Check ....................... 59 .
nector .................................................................... 29
. IPDM E/R Ignition Relay Circuit Check ................. 61 .
Circuit Check Between Data Link Connector and Component Inspection ........................................... 61 .
Unified Meter and A/C Amp. ................................. 30 . ECM/IPDM E/R INTERNAL CIRCUIT INSPEC-
Circuit Check Between Unified Meter and A/C Amp. TION ................................................................... 61
.
and BCM ............................................................... 30
. CAN SYSTEM (TYPE 3) .......................................... 62 .
Circuit Check Between BCM and ABS Actuator and System Description ................................................ 62 .
Electric Unit (Control Unit) ..................................... 30 . Component Parts and Harness Connector Location 62 ...
ECM Circuit Check ................................................ 31 . Wiring Diagram -- CAN -- .................................... 63 .
TCM Circuit Check ................................................ 32 . Work Flow .............................................................. 65
.
Data Link Connector Circuit Check ....................... 32 . CHECK SHEET .................................................. 66 .
Unified Meter and A/C Amp. Circuit Check ........... 33 . CHECK SHEET RESULTS (EXAMPLE) ............ 68 .
BCM Circuit Check ................................................ 33 . Circuit Check Between Data Link Connector and
ABS Actuator and Electric Unit (Control Unit) Circuit

Revision: 2004 December LAN-1 2004.5 350Z
Unified Meter and A/C Amp. .................................. 78 . Circuit Check Between Data Link Connector and
Circuit Check Between Unified Meter and A/C Amp. Unified Meter and A/C Amp. ................................ 106 .
and BCM ................................................................ 78
. Circuit Check Between Unified Meter and A/C Amp.
Circuit Check Between BCM and ABS Actuator and and BCM .............................................................. 106
.
Electric Unit (Control Unit) ..................................... 78 . Circuit Check Between BCM and Low Tire Pressure
ECM Circuit Check ................................................ 79 . Warning Control Unit ............................................ 107 .
Data Link Connector Circuit Check ........................ 80 . Circuit Check Between Low Tire Pressure Warning
Unified Meter and A/C Amp. Circuit Check ............ 80 . Control Unit and Steering Angle Sensor .............. 107 .
BCM Circuit Check ................................................ 81 . Circuit Check Between Steering Angle Sensor and
ABS Actuator and Electric Unit (Control Unit) Circuit VDC/TCS/ABS Control Unit ................................. 108 .
Check .................................................................... 81
. ECM Circuit Check ............................................... 108 .
IPDM E/R Circuit Check ........................................ 82 . Data Link Connector Circuit Check ...................... 109 .
CAN Communication Circuit Check ....................... 83 . Unified Meter and A/C Amp. Circuit Check .......... 109 .
IPDM E/R Ignition Relay Circuit Check .................. 85 . BCM Circuit Check ............................................... 110 .
Component Inspection ........................................... 85 . Low Tire Pressure Warning Control Unit Circuit
ECM/IPDM E/R INTERNAL CIRCUIT INSPEC- Check ................................................................... 110
.
TION ................................................................... 85
. Steering Angle Sensor Circuit Check ................... 111 .
CAN SYSTEM (TYPE 4) .......................................... 86 . VDC/TCS/ABS Control Unit Circuit Check ........... 111 .
System Description ................................................ 86 . IPDM E/R Circuit Check ....................................... 112 .
Component Parts and Harness Connector Location 86 ... CAN Communication Circuit Check ..................... 113 .
Wiring Diagram -- CAN -- .................................... 87 . IPDM E/R Ignition Relay Circuit Check ................ 115 .
Work Flow .............................................................. 89
. Component Inspection ......................................... 115 .
CHECK SHEET .................................................. 90 . ECM/IPDM E/R INTERNAL CIRCUIT INSPEC-
CHECK SHEET RESULTS (EXAMPLE) ............ 92 . TION ................................................................. 115
.

Revision: 2004 December LAN-2 2004.5 350Z
PRECAUTIONS
[CAN]
PRECAUTIONS
[CAN] PFP:00001
A
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" AKS00BQM

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
q 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
q 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
q 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 for Battery Service AKS003TZ

Before disconnecting the battery, lower both the driver and passenger windows. This will prevent any interfer-
ence between the window edge and the vehicle when the door is opened/closed. During normal operation, the H
window slightly raises and lowers automatically to prevent any window to vehicle interference. The automatic
window function will not work with the battery disconnected.
I
Precautions When Using CONSULT-II AKS003M4

When connecting CONSULT-II to data link connector, connect them through CONSULT-II CONVERTER.
CAUTION: J
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.
LAN

Revision: 2004 December LAN-3 2004.5 350Z
PRECAUTIONS
[CAN]
CHECK POINTS FOR USING CONSULT-II
1. Has CONSULT-II been used without connecting CONSULT-II CONVERTER on this vehicle?

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