Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Infiniti FX45 FX35 2003-2005 Approved FX45_35-S50-2004.5 lan

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lan


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LAN SYSTEM


K ELECTRICAL

                                                                                                                                                                     A




                                                                                    SECTION                     LAN    LAN SYSTEM
                                                                                                                                                                     B



                                                                                                                                                                     C


                                                                                                                                                                     D


                                                                                                                                                                     E
                                                                  CONTENTS
                                   CAN                                             IPDM E/R Circuit Check ........................................ 46       .        F
                                                                                   CAN Communication Circuit Check ....................... 47               .
PRECAUTIONS ......................................................... 4  .         IPDM E/R Ignition Relay Circuit Check ................. 51               .
 Precautions for Supplemental Restraint System                                     Component Inspection ........................................... 51      .        G
 (SRS) "AIR BAG" and "SEAT BELT PRE-TEN-                                             ECM/IPDM E/R INTERNAL CIRCUIT INSPEC-
 SIONER" ................................................................. 4
                                                                         .           TION ................................................................... 51
                                                                                                                                                            .
 Precautions When Using CONSULT-II .................... 4                .        CAN SYSTEM (TYPE 2) .......................................... 52         .
   CHECK POINTS FOR USING CONSULT-II ........ 4                          .                                                                                           H
                                                                                   System Description ................................................ 52   .
 Precautions For Trouble Diagnosis ......................... 4           .         Component Parts and Harness Connector Location 52                        ...
   CAN SYSTEM ...................................................... 4   .         Wiring Diagram - CAN - ......................................... 53      .
 Precautions For Harness Repair ............................. 5          .         Work Flow .............................................................. 55
                                                                                                                                                            .         I
   CAN SYSTEM ...................................................... 5   .           CHECK SHEET .................................................. 57      .
CAN COMMUNICATION ........................................... 6          .           CHECK SHEET RESULTS (EXAMPLE) ............ 59                          .
 System Description ................................................. 6  .         Circuit Check Between TCM and Data Link Con-                                       J
 CAN Communication Unit ....................................... 6        .         nector ..................................................................... 74
                                                                                                                                                            .
   TYPE 1/TYPE2 .................................................... 6   .         Circuit Check Between Data Link Connector and
   TYPE 3 ................................................................. 9
                                                                         .         Unified Meter and A/C Amp. .................................. 74         .
   TYPE 4/TYPE5 .................................................. 13    .                                                                                           LAN
                                                                                   Circuit Check Between Unified Meter and A/C Amp.
   TYPE 6 ............................................................... 16
                                                                         .         and ABS Actuator and Electric Unit (Control Unit)... 75
CAN SYSTEM (TYPE 1) .......................................... 21        .         Circuit Check Between ABS Actuator and Electric
 System Description ............................................... 21   .         Unit (Control Unit) and Driver Seat Control Unit .... 76                 .         L
 Component Parts and Harness Connector Location 21                       ...       ECM Circuit Check ................................................ 76    .
 Wiring Diagram - CAN - ........................................ 22      .         TCM Circuit Check ................................................ 77    .
 Work Flow ............................................................. 24
                                                                         .         Display Unit Circuit Check ..................................... 77      .        M
   CHECK SHEET .................................................. 26     .         Data Link Connector Circuit Check ....................... 78             .
   CHECK SHEET RESULTS (EXAMPLE) ............ 28                         .         BCM Circuit Check ................................................ 78    .
 Circuit Check Between TCM and Data Link Con-                                      Steering Angle Sensor Circuit Check .................... 79              .
 nector .................................................................... 41
                                                                         .         Unified Meter and A/C Amp. Circuit Check ........... 79                  .
 Circuit Check Between Data Link Connector and                                     ABS Actuator and Electric Unit (Control Unit) Circuit
 Unified Meter and A/C Amp. ................................. 41         .         Check .................................................................... 80
                                                                                                                                                            .
 Circuit Check Between Unified Meter and A/C Amp.                                  Driver Seat Control Unit Circuit Check .................. 80             .
 and ABS Actuator and Electric Unit (Control Unit) 42                    ...       IPDM E/R Circuit Check ........................................ 81       .
 ECM Circuit Check ................................................ 42   .         CAN Communication Circuit Check ....................... 82               .
 TCM Circuit Check ................................................ 43   .         IPDM E/R Ignition Relay Circuit Check ................. 86               .
 Display Unit Circuit Check ..................................... 43     .         Component Inspection ........................................... 86      .
 Data Link Connector Circuit Check ....................... 44            .           ECM/IPDM E/R INTERNAL CIRCUIT INSPEC-
 BCM Circuit Check ................................................ 44   .           TION ................................................................... 86
                                                                                                                                                            .
 Steering Angle Sensor Circuit Check .................... 45             .        CAN SYSTEM (TYPE 3) .......................................... 87         .
 Unified Meter and A/C Amp. Circuit Check ........... 45                 .         System Description ................................................ 87   .
 ABS Actuator and Electric Unit (Control Unit) Circuit                             Component Parts and Harness Connector Location 87                        ...
 Check .................................................................... 46
                                                                         .

Revision: 2004 November                                                    LAN-1                                                       2004.5 FX35/FX45
 Schematic .............................................................. 88
                                                                          .        CAN Communication Circuit Check ..................... 163                .
 Wiring Diagram - CAN - ......................................... 89      .        IPDM E/R Ignition Relay Circuit Check ................ 166               .
 Work Flow .............................................................. 92
                                                                          .        Component Inspection ......................................... 166       .
   CHECK SHEET .................................................. 94      .          ECM/IPDM E/R INTERNAL CIRCUIT INSPEC-
   CHECK SHEET RESULTS (EXAMPLE) ............ 97                          .          TION ................................................................. 166
                                                                                                                                                            .
 Circuit Check Between TCM and Data Link Con-                                     CAN SYSTEM (TYPE 5) ......................................... 167         .
 nector ................................................................... 116
                                                                          .        System Description .............................................. 167    .
 Circuit Check Between Data Link Connector and                                     Component Parts and Harness Connector Location                           .167
 Unified Meter and A/C Amp. ................................ 117          .        Schematic ............................................................ 168
                                                                                                                                                            .
 Circuit Check Between Unified Meter and A/C Amp.                                  Wiring Diagram - CAN - ....................................... 169       .
 and ABS Actuator and Electric Unit (Control Unit). 117                            Work Flow ............................................................ 172
                                                                                                                                                            .
 Circuit Check Between ABS Actuator and Electric                                     CHECK SHEET ................................................ 174       .
 Unit (Control Unit) and Driver Seat Control Unit .. 118                  .          CHECK SHEET RESULTS (EXAMPLE) ........... 176                          .
 ECM Circuit Check .............................................. 119     .        Circuit Check Between TCM and Data Link Con-
 TCM Circuit Check .............................................. 119     .        nector ................................................................... 192
                                                                                                                                                            .
 Display Control Unit Circuit Check ....................... 120           .        Circuit Check Between Data Link Connector and
 Low Tire Pressure Warning Control Unit Circuit                                    Unified Meter and A/C Amp. ................................ 192          .
 Check .................................................................. 120
                                                                          .        Circuit Check Between Unified Meter and A/C Amp.
 ICC Unit Circuit Check ......................................... 121     .        and ABS Actuator and Electric Unit (Control Unit).193
 Intelligent Key Unit Circuit Check ........................ 121          .        Circuit Check Between ABS Actuator and Electric
 Data Link Connector Circuit Check ...................... 122             .        Unit (Control Unit) and Driver Seat Control Unit .. 194                  .
 BCM Circuit Check .............................................. 122     .        ECM Circuit Check ............................................... 194    .
 Steering Angle Sensor Circuit Check .................. 123               .        TCM Circuit Check ............................................... 195    .
 Unified Meter and A/C Amp. Circuit Check .......... 123                  .        Display Unit Circuit Check ................................... 195       .
 ICC Sensor Circuit Check .................................... 124        .        AWD Control Unit Circuit Check .......................... 196            .
 ABS Actuator and Electric Unit (Control Unit) Circuit                             Data Link Connector Circuit Check ...................... 196             .
 Check .................................................................. 124
                                                                          .        BCM Circuit Check ............................................... 197    .
 Driver Seat Control Unit Circuit Check ................ 125              .        Steering Angle Sensor Circuit Check ................... 197              .
 IPDM E/R Circuit Check ...................................... 126        .        Unified Meter and A/C Amp. Circuit Check .......... 198                  .
 CAN Communication Circuit Check ..................... 127                .        ABS Actuator and Electric Unit (Control Unit) Circuit
 IPDM E/R Ignition Relay Circuit Check ................ 132               .        Check ................................................................... 198
                                                                                                                                                            .
 Component Inspection ......................................... 132       .        Driver Seat Control Unit Circuit Check ................. 199             .
   ECM/IPDM E/R INTERNAL CIRCUIT INSPEC-                                           IPDM E/R Circuit Check ....................................... 200       .
   TION ................................................................. 132
                                                                          .        CAN Communication Circuit Check ..................... 200                .
CAN SYSTEM (TYPE 4) ........................................ 133          .        IPDM E/R Ignition Relay Circuit Check ................ 205               .
 System Description .............................................. 133    .        Component Inspection ......................................... 205       .
 Component Parts and Harness Connector Location 133                       .          ECM/IPDM E/R INTERNAL CIRCUIT INSPEC-
 Schematic ............................................................ 134
                                                                          .          TION ................................................................. 205
                                                                                                                                                            .
 Wiring Diagram - CAN - ....................................... 135       .       CAN SYSTEM (TYPE 6) ......................................... 206         .
 Work Flow ............................................................ 138
                                                                          .        System Description .............................................. 206    .
   CHECK SHEET ................................................ 140       .        Component Parts and Harness Connector Location                           .206
   CHECK SHEET RESULTS (EXAMPLE) .......... 142                           .        Schematic ............................................................ 207
                                                                                                                                                            .
 Circuit Check Between TCM and Data Link Con-                                      Wiring Diagram - CAN - ....................................... 208       .
 nector ................................................................... 156
                                                                          .        Work Flow ............................................................ 211
                                                                                                                                                            .
 Circuit Check Between Data Link Connector and                                       CHECK SHEET ................................................ 213       .
 Unified Meter and A/C Amp. ................................ 156          .          CHECK SHEET RESULTS (EXAMPLE) ........... 216                          .
 Circuit Check Between Unified Meter and A/C Amp.                                  Circuit Check Between TCM and Data Link Con-
 and ABS Actuator and Electric Unit (Control Unit). 157                            nector ................................................................... 237
                                                                                                                                                            .
 ECM Circuit Check .............................................. 157     .        Circuit Check Between Data Link Connector and
 TCM Circuit Check .............................................. 158     .        Unified Meter and A/C Amp. ................................ 238          .
 Display Unit Circuit Check ................................... 158       .        Circuit Check Between Unified Meter and A/C Amp.
 AWD Control Unit Circuit Check .......................... 159            .        and ABS Actuator and Electric Unit (Control Unit).238
 Data Link Connector Circuit Check ...................... 159             .        Circuit Check Between ABS Actuator and Electric
 BCM Circuit Check .............................................. 160     .        Unit (Control Unit) and Driver Seat Control Unit .. 239                  .
 Steering Angle Sensor Circuit Check .................. 160               .        ECM Circuit Check ............................................... 240    .
 Unified Meter and A/C Amp. Circuit Check .......... 161                  .        TCM Circuit Check ............................................... 240    .
 ABS Actuator and Electric Unit (Control Unit) Circuit                             Display Control Unit Circuit Check ....................... 241           .
 Check .................................................................. 161
                                                                          .        Low Tire Pressure Warning Control Unit Circuit
 IPDM E/R Circuit Check ...................................... 162        .        Check ................................................................... 241
                                                                                                                                                            .

Revision: 2004 November                                                    LAN-2                                                      2004.5 FX35/FX45
 AWD Control Unit Circuit Check .......................... 242  .       Check .................................................................. 246
                                                                                                                                               .
 ICC Unit Circuit Check ........................................ 242
                                                                .       Driver Seat Control Unit Circuit Check ................ 246            .       A
 Intelligent Key Unit Circuit Check ........................ 243.       IPDM E/R Circuit Check ...................................... 247      .
 Data Link Connector Circuit Check ..................... 243    .       CAN Communication Circuit Check ..................... 248              .
 BCM Circuit Check .............................................. 244
                                                                .       IPDM E/R Ignition Relay Circuit Check ............... 253              .       B
 Steering Angle Sensor Circuit Check .................. 244     .       Component Inspection ......................................... 253     .
 Unified Meter and A/C Amp. Circuit Check ......... 245         .         ECM/IPDM E/R INTERNAL CIRCUIT INSPEC-
 ICC Sensor Circuit Check ................................... 245
                                                                .         TION ................................................................. 253
                                                                                                                                               .
 ABS Actuator and Electric Unit (Control Unit) Circuit                                                                                                 C


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Revision: 2004 November                                          LAN-3                                                   2004.5 FX35/FX45
                                              PRECAUTIONS
                                                                                                            [CAN]
PRECAUTIONS
[CAN]                                                               PFP:00001

Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER"                                                                                           AKS007WY


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:
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.
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.
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.
Precautions When Using CONSULT-II                                                                             AKS0058H


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?



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