BCM INFINITI FX35 2007 User Guide
[x] Cancel search | Manufacturer: INFINITI, Model Year: 2007, Model line: FX35, Model: INFINITI FX35 2007Pages: 4366, PDF Size: 55.42 MB
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AV-54
INTEGRATED DISPLAY SYSTEM
Revision: 2006 July 2007 FX35/FX45
INTEGRATED DISPLAY SYSTEMPFP:28090
System DescriptionNKS003IZ
For system operation information, refer to Owner's Manual.
INTEGRATED DISPLAY SYSTEM
Each control unit that comprises the system is connected with a communication circuit. It transmits/
receives data signals including request signals and response signals, and controls the system.
The display control unit transmits/receives data signals to/from each control unit with CAN communica-
tion. It performs an arithmetical operation on fuel information values by using data obtained from the con-
trol units, and then displays the calculated values on the screen.
The display control unit receives door switch signals from the BCM with CAN communication, and dis-
plays a warning on the screen when driving over the set speed with a door half-shut.
The display control unit receives vehicle speed signals that are transmitted from the unified meter and A/
C amp., performs an arithmetical operation on drive information values, and then displays the calculated
values on the screen.
The images displayed on the monitor screen contain display control unit-generated RGB images.
The display control unit controls image switching and image quality adjustments by communications with
the display.
SKIB8651E
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NAVIGATION SYSTEM AV-93
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Revision: 2006 July 2007 FX35/FX45
NAVIGATION SYSTEMPFP:25915
System DescriptionNKS003K0
For Navigation System operation information, refer to Navigation System Owner's Manual.
Each control unit that comprises the system is connected with a communication circuit. It transmits/
receives data signals including request signals and response signals, and controls the system.
The display control unit transmits/receives data signals to/from each control unit with CAN communica-
tion. It performs an arithmetical operation on fuel information values by using data obtained from the con-
trol units, and then displays the calculated values on the screen.
The display control unit receives door switch signals from the BCM with CAN communication, and dis-
plays a warning on the screen when driving over the set speed with a door half-shut.
The display control unit receives vehicle speed signals that are transmitted from the unified meter and A/
C amp., performs an arithmetical operation on drive information values, and then displays the calculated
values on the screen.
The images displayed on the monitor screen contain NAVI control unit-generated RGB images.
The display control unit controls image switching and image quality adjustments by communications with
the display.
SKIB8652E
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BCS-1
BODY CONTROL SYSTEM
K ELECTRICAL
CONTENTS
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BODY CONTROL SYSTEM
PRECAUTIONS .......................................................... 2
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ............................................................. ..... 2
BCM (BODY CONTROL MODULE) ...................... ..... 3
System Description ............................................. ..... 3
BCM FUNCTION .............................................. ..... 3
COMBINATION SWITCH READING FUNCTION ..... 3
CAN COMMUNICATION CONTROL ............... ..... 5
BCM STATUS CONTROL ................................ ..... 6
SYSTEMS CONTROLLED BY BCM DIRECTLY ..... 7
SYSTEMS CONTROLLED BY BCM AND IPDM
E/R ................................................................... ..... 7
SYSTEMS CONTROLLED BY BCM AND COM-
BINATION METER ........................................... ..... 7
SYSTEMS CONTROLLED BY BCM AND INTEL- LIGENT KEY UNIT ...........................................
..... 7
SYSTEMS CONTROLLED BY BCM, COMBINA-
TION METER AND IPDM E/R .......................... ..... 7
MAJOR COMPONENTS AND CONTROL SYS-
TEM .................................................................. ..... 8
CAN Communication Unit .................................... ..... 9
Schematic ............................................................ ... 10
CONSULT-II Function (BCM) .............................. ... 12
CONSULT–II INSPECTION PROCEDURE ...... ... 12
ITEMS OF EACH PART ................................... ... 12
WORK SUPPORT ............................................ ... 13
CAN Communication Inspection Using CONSULT-
II (Self-Diagnosis) ................................................ ... 13
Removal and Installation of BCM ........................ ... 14
REMOVAL ........................................................ ... 14
INSTALLATION ................................................ ... 14
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BCM (BODY CONTROL MODULE) BCS-3
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BCM (BODY CONTROL MODULE)PFP:284B2
System DescriptionNKS0033Z
BCM (Body Control Module) controls the operation of various electrical units installed on the vehicle.
BCM FUNCTION
BCM has combination switch reading function for reading the operation of combination switches (light, wiper,
washer and turn signal) in addition to a function for controlling the operation of various electrical components.
Also it has an interface function allowing it to receive signals from the unified meter and A/C amp., and send
signals to ECM using CAN communication.
COMBINATION SWITCH READING FUNCTION
Description
BCM reads combination switch (lighting switch, wiper switch) status, and controls various electrical com-
ponent according to the result.
BCM reads information of a maximum of 20 switches by combining five output terminals (OUTPUT 1-5)
and five input terminals (INPUT 1-5).
Operation Description
BCM activates transistors of output terminals (OUTPUT 1-5) periodically, and allows current to flow in
turn.
If any (1 or more) switches are turned ON, circuit of output terminals (OUTPUT 1-5) and input terminals
(INPUT 1-5) becomes active.
At this time, transistors of output terminals (OUTPUT 1-5) are activated to allow current to flow. When volt-
age of input terminals (INPUT 1-5) corresponding to that switch changes, interface in BCM detects volt-
age change, and BCM determines that switch is ON.
PKID0853E
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BCS-4
BCM (BODY CONTROL MODULE)
Revision: 2006 July 2007 FX35/FX45
Operation Table Of BCM and Combination Switches
BCM reads operation status of combination switch using combinations shown in table below.
NOTE:
Headlamp system has a dual switch.
Sample Operation: (When Lighting Switch 1ST Position Turned ON)
When lighting switch 1ST position is turned ON, contact in combination switch turns ON. At this time if
OUTPUT 4 transistor is activated, BCM detects that voltage changes in INPUT 5.
When OUTPUT 4 transistor is ON, BCM detects that voltage changes in INPUT 5, and judges that lighting
switch 1ST position is ON. Then BCM sends tail lamp and clearance lamp request signal to IPDM E/R
using CAN communication.
When OUTPUT 4 transistor is activated again, BCM detects that voltage changes in INPUT 5, and recog-
nizes that lighting switch 1ST position is continuously ON.
NOTE:
Each OUTPUT terminal transistor is activated at 10 ms intervals. Therefore after switch is turned ON, electri-
cal loads are activated with time delay. But this time delay is so short that it cannot be detected by human
senses.
SKIA4959E
PKID0854E
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BCM (BODY CONTROL MODULE) BCS-5
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Revision: 2006 July 2007 FX35/FX45
Operation Mode
Combination switch reading function has operation modes shown below.
1. Normal status When BCM is not in sleep status, OUTPUT terminals (1-5) send out ON signal every 10 ms.
2. Sleep status When BCM is in sleep status, transistors of OUTPUT 1 and 5 stop the output, and BCM enters low power
mode. Mean while OUTPUT 2, 3, and 4 send out ON signal every 60 ms, and accept input from lighting
switch system.
CAN COMMUNICATION CONTROL
CAN communication allows a high rate of information transmission through the two communication lines (CAN
L line, CAN H line) connecting the various control units in the system. Each control unit transmits/receives
data but selectively reads required data only. For details of signals that are transmitted/received by BCM via
CAN communication, refer to LAN-49, "
CAN System Specification Chart" .
PKIC4919E
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BCS-6
BCM (BODY CONTROL MODULE)
Revision: 2006 July 2007 FX35/FX45
BCM STATUS CONTROL
BCM changes its status depending on the operation status in order to save power consumption.
1. CAN communication status
With ignition switch ON, CAN communicates with other control units normally.
Control by BCM is being operated properly.
When ignition switch is OFF, switching to sleep mode is possible.
Even when ignition switch is OFF, if CAN communication with IPDM E/R and combination meter is
active, CAN communication status is active.
2. Sleep transient status
This status shuts down CAN communication when ignition switch is turned OFF.
It transmits sleep request signal to IPDM E/R and combination meter.
2 seconds after CAN communication of all control units stops, sleep transient status is switched to CAN
communication inactive status.
3. CAN communication inactive status
With ignition switch OFF, CAN communication is not active.
With ignition switch OFF, control performed only by BCM is active.
3 seconds after CAN communication of all control units stops, CAN communication inactive status is
switched to sleep status.
4. Sleep status
BCM is activated with low power mode.
CAN communication is not active.
When CAN communication operation is detected, it switches to CAN communication status.
When a state of the following switches changes, it switches to CAN communication state.
–Key switch
–Hazard switch
–Door lock/unlock switch
–Front door switch (driver side, passenger side)
–Rear door switch (LH, RH)
–Back door opener switch
–Combination switch (passing, lighting switch 1ST position, front fog lamp)
–Key fob (lock/unlock signal)
–Key cylinder switch
When control performed only by BCM is required by switch, it shifts to CAN communication inactive
mode.
Operation mode of combination switch reading function is changed.
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BCM (BODY CONTROL MODULE) BCS-7
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Revision: 2006 July 2007 FX35/FX45
SYSTEMS CONTROLLED BY BCM DIRECTLY
NOTE:
Power supply only. No system control.
SYSTEMS CONTROLLED BY BCM AND IPDM E/R
SYSTEMS CONTROLLED BY BCM AND COMBINATION METER
SYSTEMS CONTROLLED BY BCM AND INTELLIGENT KEY UNIT
SYSTEMS CONTROLLED BY BCM, COMBINATION METER AND IPDM E/R
System Reference
Power door lock system BL-21, "
POWER DOOR LOCK SYSTEM"
Remote keyless entry systemBL-54, "REMOTE KEYLESS ENTRY SYSTEM"
Power window system NOTEGW-15, "POWER WINDOW SYSTEM"
Sunroof NOTERF-10, "SUNROOF"
Room lamp timerLT-152, "INTERIOR ROOM LAMP"
Rear wiper and washer systemWW-39, "REAR WIPER AND WASHER SYSTEM"
System Reference
Panic alarm
BL-54, "REMOTE KEYLESS ENTRY SYSTEM"
BL-86, "INTELLIGENT KEY SYSTEM"
Theft warning system BL-180, "VEHICLE SECURITY (THEFT WARNING) SYSTEM"
IVIS (NATS)BL-205, "IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)"
HeadlampLT- 6 , "HEADLAMP - XENON TYPE -"
Daytime light systemLT-38, "DAYTIME LIGHT SYSTEM"
Auto light systemLT-55, "AUTO LIGHT SYSTEM"
Front fog lampLT-78, "FRONT FOG LAMP"
Parking, license plate, side marker and tail lamps
Exterior lamp battery saver control LT-131, "PARKING, LICENSE PLATE AND TAIL LAMPS"
Front wiper and washer system
WW-4, "FRONT WIPER AND WASHER SYSTEM"
Rear window defoggerGW-67, "REAR WINDOW DEFOGGER"
System Reference
Warning chime DI-56, "
WARNING CHIME"
Turn signal and hazard warning lampsLT-90, "TURN SIGNAL AND HAZARD WARNING LAMPS"
Tire pressure monitoring systemWT-11, "TIRE PRESSURE MONITORING SYSTEM"
System Reference
Intelligent Key system BL-86, "
INTELLIGENT KEY SYSTEM"
System Reference
Oil pressure warning lamp DI-38, "
WARNING LAMPS"
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BCS-8
BCM (BODY CONTROL MODULE)
Revision: 2006 July 2007 FX35/FX45
MAJOR COMPONENTS AND CONTROL SYSTEM
System Input Output
Remote control entry system Key fob
All-door locking actuator
Fuel lid Lock actuator
Turn signal lamp (LH, RH)
Combination meter
Intelligent key system Intelligent key unit
All-door locking actuator
Fuel lid Lock actuator
Turn signal lamp (LH, RH)
Combination meter
Power door lock system
Power window main switch
(door lock and unlock switch)
Power window sub switch (passenger side)
(door lock and unlock switch) All-door locking actuator
Power supply (IGN) to power window, sunroof Ignition power supply Power window and sunroof system
Power supply (BAT) to power window, sunroof
and power seat Battery power supplyPower window, sunroof system and
power seat
Panic alarm
Key switch
Key fob IPDM E/R
Theft warning system
All-door switch
Hood switch
Key fob
Power window main switch (door lock and
unlock switch)
Power window sub switch (passenger side)
(door lock and unlock switch)
IPDM E/R
Security indicator lamp
Auto light system
Optical sensor
Combination switch
Ignition switch IPDM E/R
Exterior lamp battery saver control
Ignition switch
Combination switch IPDM E/R
Headlamp Combination switch IPDM E/R
Daytime light system
Combination meter
ECM
Combination switch
Ignition switch IPDM E/R
Parking, license plate, side marker and tail
lamps Combination switch IPDM E/R
Front fog lamp Combination switch IPDM E/R
Turn signal lamp
Combination switch
Ignition switch
Turn signal lamp
Combination meter
Hazard lamp Hazard switch
Turn signal lamp
Combination meter
Room lamp timer
Key switch
Key fob
Power window main switch (door lock and
unlock switch)
Front door switch driver side
All-door switch Interior room lamp
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BCM (BODY CONTROL MODULE) BCS-9
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CAN Communication UnitNKS00340
Refer to LAN-49, "CAN System Specification Chart" .
Key warning chimeKey switch
Front door switch driver side Combination meter
(warning buzzer)
Light warning chime
Combination switch
Key switch
Front door switch driver side Combination meter
(warning buzzer)
Seat belt warning chime
Combination meter [Seat belt buckle
(driver side) switch]
Ignition switch Combination meter
(warning buzzer)
Front wiper and washer system
Combination switch
Combination meter
Ignition switch IPDM E/R
Rear wiper and washer system
Combination switch
Ignition switch Rear wiper motor
Rear window defogger
Rear window defogger switch
Ignition switch IPDM E/R
A/C switch signal Unified meter and A/C amp. ECM
Blower fan switch signal Unified meter and A/C amp. ECM
Low tire pressure warning system Remote keyless entry receiver Combination meter System Input Output