INFINITI FX35 2006 Service Manual

LAN-1
LAN SYSTEM
K ELECTRICAL
CONTENTS
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SECTION LAN
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LAN
Revision: 2006 December 2006 FX35/FX45
LAN SYSTEM
CAN
PRECAUTIONS ..................................................... ..... 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ............................................................. ..... 3
Precautions When Using CONSULT-II ................ ..... 3
CHECK POINTS FOR USING CONSULT-II .... ..... 3
Precautions For Trouble Diagnosis ..................... ..... 3
CAN SYSTEM .................................................. ..... 3
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 ........................ ... 16
DESCRIPTION OF “CAN DIAG SUPPORT
MNTR” SCREEN FOR ECM ............................ ... 16
DESCRIPTION OF “CAN DIAG SUPPORT
MNTR” SCREEN FOR TCM ............................ ... 17
DESCRIPTION OF “CAN DIAG SUPPORT
MNTR” SCREEN FOR AWD CONTROL UNIT ... 18
DESCRIPTION OF “CAN DIAG SUPPORT
MNTR” SCREEN FOR ICC UNIT .................... ... 19
DESCRIPTION OF “CAN DIAG SUPPORT
MNTR” SCREEN FOR INTELLIGENT KEY UNIT ... 20
DESCRIPTION OF “CAN DIAG SUPPORT
MNTR” SCREEN FOR BCM ............................ ... 21
DESCRIPTION OF “CAN DIAG SUPPORT MNTR” SCREEN FOR LDW CAMERA UNIT ...
... 22
DESCRIPTION OF “CAN DIAG SUPPORT
MNTR” SCREEN FOR UNIFIED METER AND A/
C AMP. .............................................................. ... 23
DESCRIPTION OF “CAN DIAG SUPPORT
MNTR” SCREEN FOR ABS ACTUATOR AND
ELECTRIC UNIT (CONTROL UNIT) ................ ... 24
DESCRIPTION OF “CAN DIAG SUPPORT
MNTR” SCREEN FOR DRIVER SEAT CON-
TROL UNIT ...................................................... ... 24
DESCRIPTION OF “CAN DIAG SUPPORT
MNTR” SCREEN FOR IPDM E/R .................... ... 25
DESCRIPTION OF “CAN DIAG SUPPORT
MNTR” SCREEN FOR DISPLAY CONTROL
UNIT ................................................................. ... 26
CAN COMMUNICATION ........................................ ... 27
System Description .............................................. ... 27
Component Parts and Harness Connector Location ... 27
Schematic ............................................................ ... 28
Wiring Diagram — CAN — .................................. ... 29
CAN Communication Unit .................................... ... 32
TYPE 1/TYPE 2 ................................................ ... 33
TYPE 3 ............................................................. ... 36
TYPE 4/TYPE 5 ................................................ ... 40
TYPE 6 ............................................................. ... 44
CAN SYSTEM (TYPE 1) ........................................ ... 49
Component Parts and Harness Connector Location ... 49
Schematic ............................................................ ... 49
Wiring Diagram — CAN — .................................. ... 49
Check Sheet ........................................................ ... 50
CHECK SHEET RESULTS (EXAMPLE) .......... ... 52
CAN SYSTEM (TYPE 2) ........................................ ... 69
Component Parts and Harness Connector Location ... 69
Schematic ............................................................ ... 69
Wiring Diagram — CAN — .................................. ... 69
Check Sheet ........................................................ ... 70
CHECK SHEET RESULTS (EXAMPLE) .......... ... 73
CAN SYSTEM (TYPE 3) ........................................ ... 91
Component Parts and Harness Connector Location ... 91
Schematic ............................................................ ... 91

LAN-2Revision: 2006 December 2006 FX35/FX45 Wiring Diagram — CAN — ..................................
... 91
Check Sheet ........................................................ ... 92
CHECK SHEET RESULTS (EXAMPLE) .......... ... 96
CAN SYSTEM (TYPE 4) ........................................ .117
Component Parts and Harness Connector Location .117
Schematic ............................................................ .117
Wiring Diagram — CAN — .................................. .117
Check Sheet ........................................................ .118
CHECK SHEET RESULTS (EXAMPLE) .......... .121
CAN SYSTEM (TYPE 5) ........................................ .139
Component Parts and Harness Connector Location .139
Schematic ............................................................ .139
Wiring Diagram — CAN — .................................. .139
Check Sheet ........................................................ .140
CHECK SHEET RESULTS (EXAMPLE) .......... .144
CAN SYSTEM (TYPE 6) ........................................ .163
Component Parts and Harness Connector Location .163
Schematic ............................................................ .163
Wiring Diagram — CAN — .................................. .163
Check Sheet ........................................................ .164
CHECK SHEET RESULTS (EXAMPLE) .......... .168
TROUBLE DIAGNOSIS FOR SYSTEM ................. .190
Inspection Between TCM and Data Link Connector
Circuit .................................................................. .190
Inspection Between Data Link Connector and Uni- fied Meter and A/C Amp. Circuit ..........................
.190
Inspection Between Unified Meter and A/C Amp.
and ABS Actuator and Electric Unit (Control Unit)
Circuit ................................................................... .190
Inspection Between ABS Actuator and Electric Unit
(Control Unit) and Driver Seat Control Unit Circuit .191
ECM Circuit Inspection ........................................ .192
TCM Circuit Inspection ......................................... .193
Display Control Unit Circuit Inspection ................. .193
AWD Control Unit Circuit Inspection .................... .194
ICC Unit Circuit Inspection ................................... .194
Intelligent Key Unit Circuit Inspection .................. .195
Data Link Connector Circuit Inspection ................ .195
BCM Circuit Inspection ........................................ .196
Steering Angle Sensor Circuit Inspection ............. .196
LDW Camera Unit Circuit Inspection ................... .197
Unified Meter and A/C Amp. Circuit Inspection .... .197
ICC Sensor Circuit Inspection .............................. .198
ABS Actuator and Electric Unit (Control Unit) Circuit
Inspection ............................................................. .198
Driver Seat Control Unit Circuit Inspection .......... .199
IPDM E/R Circuit Inspection ................................ .199
CAN Communication Circuit Inspection ............... .200
IPDM E/R Ignition Relay Circuit Inspection .......... .201

PRECAUTIONS LAN-3
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Revision: 2006 December 2006 FX35/FX45
[CAN]PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
NKS00345
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.
WARNING:

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-IINKS00346
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-5, "
TROUBLE DIAGNOSES WORK FLOW" .
Precautions For Trouble DiagnosisNKS00347
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.

LAN-4
[CAN]
PRECAUTIONS
Revision: 2006 December 2006 FX35/FX45
Precautions For Harness RepairNKS00348
CAN SYSTEM

Solder the repaired parts, and wrap with tape. [Frays of twisted
line must be within 110 mm (4.33 in).]

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.)
PKIA0306E
PKIA0307E

TROUBLE DIAGNOSES WORK FLOW LAN-5
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Revision: 2006 December 2006 FX35/FX45
TROUBLE DIAGNOSES WORK FLOWPFP:00004
When Displaying CAN Communication System ErrorsNKS00349
WHEN A MALFUNCTION IS DETECTED BY CAN COMMUNICATION SYSTEM

CAN communication line is open. (CAN-H, CAN-L, or both)

CAN communication line is shorted. (Ground, between CAN lines, or other harnesses)

The areas related to CAN communication of unit is malfunctioning.
WHEN A MALFUNCTION IS DETECTED EXCEPT CAN COMMUNICATION SYSTEM

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).

Fuse blown out (removed): CAN communication of the unit may be stopped at such time.

Low voltage: If the voltage decreases because of battery discharge when IGN is ON, malfunction may be
detected by self-diagnosis according to the units.

LAN-6
[CAN]
TROUBLE DIAGNOSES WORK FLOW
Revision: 2006 December 2006 FX35/FX45
TROUBLE DIAGNOSIS FLOW CHART
Depending on the control unit which performs CAN communication, “U1010” may be indicated as the result of
self-diagnosis. Replace the control unit if “U1010” is indicated.

Step 1: Refer to LAN-7, "SELECTING CAN SYSTEM TYPE (HOW TO USE SPECIFICATION TABLE)" .

Step 2: Refer to LAN-8, "ACQUISITION OF DATA BY CONSULT-II" .

Step 3: Refer to LAN-9, "HOW TO USE CHECK SHEET TABLE" .

Step 4: Refer to LAN-10, "Example of Filling in Check Sheet When Initial Conditions Are Reproduced" .

Step 5: Refer to LAN-190, "TROUBLE DIAGNOSIS FOR SYSTEM" .
PKIC9649E

TROUBLE DIAGNOSES WORK FLOW LAN-7
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Revision: 2006 December 2006 FX35/FX45
Diagnosis ProcedureNKS0034A
SELECTING CAN SYSTEM TYPE (HOW TO USE SPECIFICATION TABLE)
Determine CAN system type from the equipment of the vehicle to select applicable check sheet.
PKIC9648E

LAN-8
[CAN]
TROUBLE DIAGNOSES WORK FLOW
Revision: 2006 December 2006 FX35/FX45
ACQUISITION OF DATA BY CONSULT-II
Attach the data acquired by CONSULT-II on the check sheet determined according to CAN system type.
(Transfer the data from the display screen of the vehicle to the CAN diagnosis monitor check sheet. For dis-
play control unit: Refer to AV- 8 3 , "
CAN Communication Check" .)
PKIC9650E

TROUBLE DIAGNOSES WORK FLOW LAN-9
[CAN]
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Revision: 2006 December 2006 FX35/FX45
HOW TO USE CHECK SHEET TABLE
1. Unit names displayed on CONSULT-II
2. “No indication”: Put a check mark to it if the unit name described in step 1 is not displayed on “SELECT SYSTEM” screen of CONSULT-II. (Unit communicating with CONSULT-II via CAN communication line)
“–”: Column not used (Unit communicating with CONSULT-II excluding CAN communication line)
3. “NG”: Display “NG” when malfunction is detected in the initial diagnosis of the diagnosed unit. Replace the unit if “NG” is displayed.
“–”: Column not used (Initial diagnosis is not performed.)
NOTE:
It is unnecessary to replace ABS actuator and electric unit (control unit) when “NG” on “INITIAL DIAG” of
“ABS” is indicated at this stage. “NG” is indicated not only when malfunctioning ABS actuator and electric
unit (control unit) but also other parts. See check sheet results for the system diagnosis.
4. “UNKWN”: Display “UNKWN” when the diagnosed unit does not transmit the data normally. Put a check mark to it if “UNKWN” is displayed on CONSULT-II.
“–”: Column not used (Transmit diagnosis is not performed.)
5. “UNKWN”: Display “UNKWN” when the diagnosed unit does not receive the data normally. Put a check mark to it if “UNKWN” is displayed on CONSULT-II.
“–”: Column not used (It is not necessary for CAN communication trouble diagnosis.)
NOTE:
CAN communication diagnosis checks if CAN communication works normally. (Contents of data are not diag-
nosed.)

When the initial conditions are reproduced, refer to LAN-10, "Example of Filling in Check Sheet When Ini-
tial Conditions Are Reproduced" .

When the initial conditions are not reproduced, refer to LAN-14, "Example of Filling in Check Sheet When
Initial Conditions Are Not Reproduced" .
PKIC9651E

LAN-10
[CAN]
TROUBLE DIAGNOSES WORK FLOW
Revision: 2006 December 2006 FX35/FX45
Example of Filling in Check Sheet When Initial Conditions Are Reproduced
1. Put a check mark to “No indication” if some of unit names listed on the column of diagnosis system selec- tion screen of a check sheet table are not displayed on “SELECT SYSTEM” screen attached to the check
sheet.
NOTE:
Put a check mark to “No indication” of METER A/C AMP, AUTO DRIVE POS. and IPDM E/R because
METER A/C AMP, AUTO DRIVE POS. and IPDM E/R is not displayed on “SELECT SYSTEM” screen.
2. Confirm the unit name that “UNKWN” is displayed from the copy of “CAN DIAG SUPPORT MNTR” screen of “ENGINE” attached to the check sheet, and then put a check mark to the check sheet table.
NOTE:
In “CAN DIAG SUPPORT MNTR” screen, “UNKWN” is displayed on “VDC/TCS/ABS”, “METER/M&A” and
“IPDM E/R”. Put a check mark to the check sheet table.
3. Confirm the unit name that “UNKWN” is displayed on the copy of “CAN DIAG SUPPORT MNTR” screen of “A/T” as well as “ENGINE”. And then, put a check mark to the check sheet table.
NOTE:
In “CAN DIAG SUPPORT MNTR” screen, “UNKWN” is displayed on “VDC/TCS/ABS”, “METER/M&A”,
”ICC/e4WD“ and “AWD/4WD”. But, put a check mark to “VDC/TCS/ABS” and “METER/M&A” because
“UNKWN” is listed on the column of reception diagnosis of the check sheet table.
PKIC9652E