Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Infiniti Q45 FY33 F50 2001-2006 Approved 2006_Q45 lan
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LAN SYSTEM
K ELECTRICAL
A
SECTION LAN LAN SYSTEM
B
C
D
E
CONTENTS
LAN CAN F
PRECAUTIONS ......................................................... 3 . PRECAUTIONS ....................................................... 17 .
Precautions for Supplemental Restraint System Precautions for Supplemental Restraint System
G
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- (SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ................................................................. 3
. SIONER" ................................................................ 17
.
IVMS (LAN) ................................................................ 4
. Precautions When Using CONSULT-II .................. 17 .
Overall Description .................................................. 4
. CHECK POINTS FOR USING CONSULT-II ....... 17 . H
OUTLINE .............................................................. 4
. Precautions for Trouble Diagnosis ........................ 17 .
BCM (BODY CONTROL MODULE) ..................... 4 . CAN SYSTEM .................................................... 17 .
LCU (LOCAL CONTROL UNIT) ........................... 4 . Precautions for Harness Repair ............................ 18 . I
Control System for BCM ......................................... 4 . CAN SYSTEM .................................................... 18 .
SYSTEM CONTROLLED BY MULTIPLE COM- TROUBLE DIAGNOSES WORK FLOW .................. 19 .
MUNICATION BETWEEN BCM AND LCU When Displaying CAN Communication System J
(IVMS) .................................................................. 4
. Errors ..................................................................... 19
.
SYSTEM CONTROLLED BY BCM ONLY ........... 4 . WHEN A MALFUNCTION IS DETECTED BY
Component Parts and Harness Connector Location 5 ..... CAN COMMUNICATION SYSTEM .................... 19 .
Sleep/Wake-Up Control ........................................... 5 . WHEN A MALFUNCTION IS DETECTED LAN
SLEEP CONTROL ............................................... 5 . EXCEPT CAN COMMUNICATION SYSTEM ..... 19 .
WAKE-UP CONTROL .......................................... 6 . TROUBLE DIAGNOSIS FLOW CHART ............. 20 .
Fail-Safe System ..................................................... 6
. Diagnosis Procedure ............................................. 21 . L
CONSULT-II Function (IVMS) ................................. 6 . SELECTING CAN SYSTEM TYPE (HOW TO
DIAGNOSTIC ITEMS DESCRIPTION ................. 6 . USE SPECIFICATION TABLE) .......................... 21 .
DIAGNOSTIC ITEMS APPLICATION .................. 6 . ACQUISITION OF DATA BY CONSULT-II ......... 22 . M
On Board Diagnosis ................................................ 7 . HOW TO USE CHECK SHEET TABLE .............. 23 .
ON BOARD DIAGNOSTIC RESULTS INDICA- CAN Diagnostic Support Monitor ........................... 29 .
TOR LAMP ........................................................... 7
. DESCRIPTION OF "CAN DIAG SUPPORT
DIAGNOSTIC ITEM ............................................. 7 . MNTR" SCREEN FOR ECM .............................. 29 .
Removal and Installation of BCM ............................ 8 . DESCRIPTION OF "CAN DIAG SUPPORT
REMOVAL ............................................................ 8
. MNTR" SCREEN FOR TCM ............................... 30 .
INSTALLATION .................................................... 8 . DESCRIPTION OF "CAN DIAG SUPPORT
Removal and Installation of LCU ............................. 8 . MNTR" SCREEN FOR VDC/TCS/ABS CON-
Schematic ............................................................... 9
. TROL UNIT ........................................................ 30 .
POWER SUPPLY, GROUND AND COMMUNI- DESCRIPTION OF "CAN DIAG SUPPORT
CATION CIRCUITS .............................................. 9 . MNTR" SCREEN FOR ICC CONTROL UNIT .... 31 .
Wiring Diagram -- COMM -- ................................ 10 . DESCRIPTION OF "CAN DIAG SUPPORT
POWER SUPPLY, GROUND AND COMMUNI- MNTR" SCREEN FOR PRE-CRASH SEAT BELT
CATION CIRCUITS ............................................ 10 . CONTROL UNIT ................................................ 32 .
Schematic -- BCM -- ........................................... 15 . DESCRIPTION OF "CAN DIAG SUPPORT
MNTR" SCREEN FOR RAS CONTROL UNIT ... 33
DESCRIPTION OF "CAN DIAG SUPPORT
Revision: 2005 November LAN-1 2006 Q45
MNTR" SCREEN FOR LDW CAMERA UNIT ..... 34 . Inspection Between ICC Sensor and VDC/TCS/
CAN COMMUNICATION .......................................... 35 . ABS Control Unit Circuit .........................................95
.
System Description ................................................ 35. Inspection Between VDC/TCS/ABS Control Unit
Component Parts and Harness Connector Location 35 ... and Pre-Crash Seat Belt Control Unit Circuit .........95 .
Schematic .............................................................. 36
. Inspection Between VDC/TCS/ABS Control Unit
Wiring Diagram -- CAN -- .................................... 37 . and ICC Unit Circuit ...............................................96
.
CAN Communication Unit ...................................... 40 . Inspection Between ICC Unit and Pre-Crash Seat
TYPE 1 ............................................................... 41
. Belt Control Unit Circuit ..........................................97
.
TYPE 2 ............................................................... 42
. Inspection Between Pre-Crash Seat Belt Control
TYPE 3 ............................................................... 44
. Unit and Data Link Connector Circuit .....................97 .
CAN SYSTEM (TYPE 1) .......................................... 46 . Inspection Between Pre-Crash Seat Belt Control
Component Parts and Harness Connector Location 46 ... Unit and RAS Control Unit Circuit ..........................99 .
Schematic .............................................................. 46
. Inspection Between Pre-Crash Seat Belt Control
Wiring Diagram -- CAN -- .................................... 46 . Unit and LDW Camera Unit Circuit ...................... 100 .
Check Sheet .......................................................... 47
. Inspection Between RAS Control Unit and Data Link
CHECK SHEET RESULTS (EXAMPLE) ............ 49 . Connector Circuit ................................................. 101
.
CAN SYSTEM (TYPE 2) .......................................... 59 . Inspection Between LDW Camera Unit and Data
Component Parts and Harness Connector Location 59 ... Link Connector Circuit .......................................... 102
.
Schematic .............................................................. 59
. ECM Circuit Inspection ........................................ 103
.
Wiring Diagram -- CAN -- .................................... 59 . TCM Circuit Inspection ......................................... 103
.
Check Sheet .......................................................... 60
. ICC Sensor Circuit Inspection .............................. 104 .
CHECK SHEET RESULTS (EXAMPLE) ............ 62 . VDC/TCS/ABS Control Unit Circuit Inspection .... 104 .
CAN SYSTEM (TYPE 3) .......................................... 78 . ICC Unit Circuit Inspection ................................... 105
.
Component Parts and Harness Connector Location 78 ... Pre-Crash Seat Belt Control Unit and Data Link Con-
Schematic .............................................................. 78
. nector Circuit Inspection ...................................... 105
.
Wiring Diagram -- CAN -- .................................... 78 . Pre-Crash Seat Belt Control Unit Circuit Inspection.106
Check Sheet .......................................................... 79
. RAS Control Unit Circuit Inspection ..................... 107 .
CHECK SHEET RESULTS (EXAMPLE) ............ 81 . LDW Camera Unit Circuit Inspection ................... 107 .
TROUBLE DIAGNOSIS FOR SYSTEM ................... 93 . Steering Angle Sensor Circuit Inspection ............. 108 .
Inspection Between TCM and VDC/TCS/ABS Con- Data Link Connector Circuit Inspection ................ 108 .
trol Unit Circuit ....................................................... 93
. Combination Meter Circuit Inspection .................. 109 .
Inspection Between TCM and ICC Sensor Circuit... 94 CAN Communication Circuit Inspection ............... 109 .
Revision: 2005 November LAN-2 2006 Q45
PRECAUTIONS
[LAN]
PRECAUTIONS
[LAN] PFP:00001
A
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" NKS001G4
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
H
I
J
LAN
L
M
Revision: 2005 November LAN-3 2006 Q45
IVMS (LAN)
[LAN]
IVMS (LAN) PFP:28491
Overall Description NKS001G5
OUTLINE
The In-Vehicle Multiplexing System, IVMS (LAN system), consists of a BCM (Body Control Module) and four
LCUs (Local Control Units). Some switches and electrical loads are connected to each LCU. Some electrical
systems are directly connected to the BCM. Control of each LCU (which is provided by a switch and electrical
load), is accomplished by the BCM, via multiplex data lines (A-1, A-2 or A-3) connected between them.
Also, IVMS has the "sleep/wake-up control" function. IVMS puts itself (the whole IVMS system) to sleep under
certain conditions to prevent unnecessary power consumption. Then, when a certain input is detected, the
system wakes itself up. For more detailed information, refer to LAN-5, "Sleep/Wake-Up Control" .
BCM (BODY CONTROL MODULE)
The BCM, which is a master unit of the IVMS (LAN), consists of microprocessor, memory and communication
LSI sections and has communication and control functions. It receives data signals from the LCUs and sends
electrical load data signals to them.
LCU (LOCAL CONTROL UNIT)
The LCUs, which are slave units of the BCM, have only a communication function and consist of communica-
tion LSI and input-output interface circuits. They receive data signals from the BCM, control the ON/OFF oper-
ations of electrical loads and the sleep operation, as well as send switch signals to the BCM.
Control System for BCM NKS002MG
SYSTEM CONTROLLED BY MULTIPLE COMMUNICATION BETWEEN BCM AND LCU (IVMS)
q Power window system (Refer to GW-16, "POWER WINDOW SYSTEM" .)
q Power door lock system (Refer to BL-19, "POWER DOOR LOCK SYSTEM" .)
q Reverse interlock door mirror system (Refer to GW-81, "REVERSE INTERLOCK DOOR MIRROR SYS-
TEM" .)
q Automatic drive positioner (Refer to SE-13, "AUTOMATIC DRIVE POSITIONER" .)
SYSTEM CONTROLLED BY BCM ONLY
q Remote keyless entry system (Refer to BL-53, "REMOTE KEYLESS ENTRY SYSTEM" .)
q Vehicle security (Theft warning) system (Refer to BL-155, "VEHICLE SECURITY (THEFT WARNING)
SYSTEM" .)
q Interior room lamp (Refer to LT-117, "INTERIOR ROOM LAMP" .)
q Step lamp (Refer to LT-145, "STEP LAMP" .)
q Illumination (Refer to LT-167, "ILLUMINATION" .)
q Auto light (Refer to LT-5, "HEADLAMP (FOR USA)" .)
q Door warning lamp (Refer to DI-26, "WARNING LAMPS" .)
q Ignition key warning chime (Refer to DI-51, "WARNING CHIME" .)
q Light warning chime (Refer to DI-51, "WARNING CHIME" .)
q Seat belt warning chime (Refer to DI-51, "WARNING CHIME" .)
q Front wiper and washer system (Refer to WW-4, "FRONT WIPER AND WASHER SYSTEM (WITH RAIN
SENSOR)" .)
q Trunk lid opener (Refer to BL-122, "TRUNK LID AND FUEL FILLER LID OPENER" .)
q Sun roof (Refer to RF-10, "SUNROOF" .)
q Rear window defogger (Refer to GW-61, "REAR WINDOW DEFOGGER" .)
q Trouble diagnosis system
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