BCS hệ THỐNG điều KHIỂN THÂN XE TRÊN INFINITI FX35, FX45 2003

HỆ THỐNG ĐIỀU KHIỂN THÂN XE TRÊN INFINITI FX35, FX45 2003

BODY CONTROL SYSTEM

K ELECTRICAL

CONTENTS

C

D

E

F

G

H

I

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L

M

BCS

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

MAJOR COMPONENTS AND CONTROL SYS-TEM 8

CAN Communication System Description 9

CAN Communication Unit 9

TYPE 1/TYPE2 10

TYPE 3 13

TYPE 4/TYPE5 16

TYPE 6 19

Schematic 23

CONSULT-II 25

CONSULT–II INSPECTION PROCEDURE 25

ITEMS OF EACH PART 26

WORK SUPPORT 27

CAN Communication Inspection Using CONSULT-II (Self-Diagnosis) 27

Removal and Installation of BCM 28

REMOVAL 28

INSTALLATION 28

PRECAUTIONS PFP:00001

Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT

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 formed by an authorized NISSAN/INFINITI dealer.

per-● Improper maintenance, including incorrect removal and installation of the SRS, can lead to sonal injury caused by unintentional activation of the system For removal of Spiral Cable and Air Bag Module, see the SRS section.

per-● 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.

● 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, 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

3 BCM - Operation table of combination switches

SKIA4958E

● BCM reads operation status of combination switch using combinations shown in table below.

NOTE:

Headlamp has a dual system switch.

4 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 ing switch 1st position is ON Then BCM sends tail lamp ON signal to IPDM E/R using CAN communi- cation.

light-● When OUTPUT 4 transistor is activated again, BCM detects that voltage changes in INPUT 5, and ognizes that lighting switch 1st position is continuously ON.

rec-SKIA4959E

SKIA4960E

cur-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 BCS-9, "CAN Communication Unit"

SKIA4961E

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.

● Two seconds after CAN communication of all control units stops, CAN communication switches to tive status.

inac-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.

● Three seconds after CAN communication of all control units stops, CAN communication switches to inactive status.

4 Sleep status

● BCM is activated with low current consumption 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.

● Status of combination switch reading function is changed.

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

Power door lock BL-20, "POWER DOOR LOCK SYSTEM"

Remote keyless entry BL-67, "REMOTE KEYLESS ENTRY SYSTEM"

Power window NOTE GW-15, "POWER WINDOW SYSTEM"

Sunroof NOTE RF-10, "SUNROOF"

Room lamp timer LT-239, "INTERIOR ROOM LAMP"

Warning chime DI-72, "WARNING CHIME"

Rear wiper WW-50, "REAR WIPER AND WASHER SYSTEM"

Panic alarm BL-67, "REMOTE KEYLESS ENTRY SYSTEM"

Theft warning BL-216, "VEHICLE SECURITY (THEFT WARNING) SYSTEM"

IVIS (NATS) BL-253, "IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)"

Headlamp, tail lamp, auto light system, Battery saver control ● LT-7, "HEADLAMP - XENON TYPE -"

● LT-51, "DAYTIME LIGHT SYSTEM"

Fog lamp LT-119, "FRONT FOG LAMP"

Front wiper WW-4, "FRONT WIPER AND WASHER SYSTEM"

Rear window defogger GW-98, "REAR WINDOW DEFOGGER"

Warning chime DI-72, "WARNING CHIME"

Turn signal and hazard warning lamps LT-145, "TURN SIGNAL AND HAZARD WARNING LAMPS"

Intelligent Key BL-110, "INTELLIGENT KEY SYSTEM"

MAJOR COMPONENTS AND CONTROL SYSTEM

Remote control entry system key fob ● All-door locking actuator

● Turn signal lamp (LH, RH)

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 systemPower supply (BAT) to power window, sunroof

and power seat Battery power supply

Power window, sunroof system and power seat

Panic alarm ● Key switch

● Key fob IPDM E/R

Theft warning system

● Security indicator lamp

Auto light system ● Optical sensor

● Combination switch IPDM E/R

Battery saver control ● Ignition switch

● Combination switch IPDM E/RHeadlamp Combination switch IPDM E/R

Tail lamp Combination switch IPDM E/R

Fog lamp Combination switch IPDM E/R

Turn signal lamp Combination switch ● Turn signal lamp

Interior room lamp

Key warning chime ● Key switch

● Front door switch driver side

Combination meter(warning buzzer)

Light warning chime ● Combination 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)

Vehicle-speed-sensing intermittent wiper ● Combination switch

● Combination meter IPDM E/RRear intermittent wiper Combination switch Rear wiper motor

Rear window defogger ● Rear window defogger switch

● Ignition switch IPDM E/RA/C switch signal Unified meter and A/C amp ECM

Blower fan switch signal Unified meter and A/C amp ECM

CAN (Controller Area Network) is a serial communication line for real time application It is an on-vehicle tiplex communication line with high data communication speed and excellent error detection ability Modern vehicles are equipped with many electronic control units and each control unit shares information and links with other control units during operation (not independent) In CAN communication, control units are con- nected with 2 communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring Each control unit transmits/receives data but selectively reads required data only.

Automatic drive positioner × × × ×

CAN communication unit

Low tire pressure warning control unit × ×

Unified meter and A/C amp × × × × × ×

ABS actuator and electric unit (control unit) × × × × × ×

ing angle sensor

Steer-Unified meter and A/

C amp

ABS actua-tor and electric unit (con-trol unit)

Driver seat control unit

IPDM E/R

Engine status signal T R

Engine coolant temperature signal T R R

A/T self-diagnosis signal R T

Accelerator pedal position signal T R R

Closed throttle position signal T R

Wide open throttle position signal T R

Battery voltage signal T R

Stop lamp switch signal R T

Fuel consumption monitor signal T R R

Input shaft revolution signal R T

Output shaft revolution signal R T

A/C switch signal R T

A/C compressor feedback signal T R

Blower fan motor switch signal R T

Cooling fan speed request signal T R

Position light request signal R T R R

Day time running light request signal T R

Turn LED burnout status signal R T

Fuel level sensor signal R T

Fuel level low warning signal R T

Signals ECM TCM

play unit

Dis-BCM

ing angle sensor

Steer-Unified meter and A/

C amp

ABS actua-tor and electric unit (con-trol unit)

Driver seat control unit

IPDM E/R

ASCD operation signal T R

ASCD OD cancel request T R

Front wiper stop position signal R TRear window defogger switch signal T RRear window defogger control signal R R R T

Theft warning horn request signal T R

Steering angle sensor signal T R

VDC OFF indicator lamp signal R T

SLIP indicator lamp signal R T

A/T CHECK indicator lamp signal T R

A/T position indicator lamp signal T R

A/T shift schedule change demand signal R T

Manual mode shift up signal R T

Manual mode shift down signal R T

Manual mode indicator signal T R

Distance to empty signal R T

Signals ECM TCM

play unit

Dis-BCM

ing angle sensor

Steer-Unified meter and A/

C amp

ABS actua-tor and electric unit (con-trol unit)

Driver seat control unit

IPDM E/R

Dis-Low tire pres-sure warn-ing con-trol unit

ICC unit

gent Key unitBCM

Intelli-Steeri

ng angle sen-sor

fied meter and A/C amp

Uni-ICC sen-sor

ABS actu-ator and elec-tric unit (con-trol unit)

Driver seat con-trol unit

IPDM E/R

Engine speed signal T R R R R R

Engine status signal T R

Engine coolant

A/T self-diagnosis signal R T

Accelerator pedal

Battery voltage signal T R

Stop lamp switch signal R T

Fuel consumption

Input shaft revolution

Output shaft revolution

A/C compressor request

A/C compressor

Position light request

High beam request

Front fog light request

Key fob door unlock

Dis-Low tire pres-sure warn-ing con-trol unit

ICC unit

gent Key unitBCM

Intelli-Steeri

ng angle sen-sor

fied meter and A/C amp

Uni-ICC sen-sor

ABS actu-ator and elec-tric unit (con-trol unit)

Driver seat con-trol unitIPDM E/R

Fuel level sensor signal R T

Fuel level low warning

ICC operation signal R T

Front wiper request

Theft warning horn

Steering angle sensor

Tire pressure data signal R T

VDC OFF indicator lamp

Distance to empty signal R T

Hand brake switch signal R T

Door lock/unlock request

Door lock/unlock status

Starter permission signal T R

Back door open request

Power window open

Alarm request signal T R

ICC warning lamp signal T R

Signals ECM TCM

play con-trol unit

Dis-Low tire pres-sure warn-ing con-trol unit

ICC unit

gent Key unitBCM

Intelli-Steeri

ng angle sen-sor

fied meter and A/C amp

Uni-ICC sen-sor

ABS actu-ator and elec-tric unit (con-trol unit)

Driver seat con-trol unitIPDM E/R

Steering switch signal T R

ASCD operation signal T R

ASCD OD cancel

request T R

ICC OD cancel request R R T

A/T CHECK indicator

A/T position indicator

A/T shift schedule

Not manual mode signal R T

Manual mode shift up

Dis-Low tire pres-sure warn-ing con-trol unit

ICC unit

gent Key unitBCM

Intelli-Steeri

ng angle sen-sor

fied meter and A/C amp

Uni-ICC sen-sor

ABS actu-ator and elec-tric unit (con-trol unit)

Driver seat con-trol unit

IPDM E/R

SKIA6174E

Dis-AWD con-trol unitBCM

ing angle sensor

Steer-fied meter and A/

Uni-C amp

ABS actua-tor and elec-tric unit (con-trol unit)

Driver seat con-trol unit

IPDM E/R

A/T self-diagnosis signal R T

Stop lamp switch signal R R T

Battery voltage signal T R

Closed throttle position signal T R

Wide open throttle position signal T R

Engine speed signal T R R R R R

Engine status signal T R

Engine coolant temperature signal T R R

Accelerator pedal position signal T R R R

Fuel consumption monitor signal T R R

Input shaft revolution signal R T

Output shaft revolution signal R T

A/C compressor feedback signal T R

Blower fan motor switch signal R T

Position light request signal R T R R

Day time running light request signal T R

Turn LED burnout status signal R T

Fuel level sensor signal R T

Fuel level low warning signal R T

Front wiper stop position signal R TRear window defogger switch signal T RRear window defogger control signal R R R T

Theft warning horn request signal T R

Steering angle sensor signal T R

VDC OFF indicator lamp signal R T

SLIP indicator lamp signal R T

Signals ECM TCM

play unit

Dis-AWD con-trol unitBCM

ing angle sensor

Steer-fied meter and A/

Uni-C amp

ABS actua-tor and elec-tric unit (con-trol unit)

Driver seat con-trol unitIPDM E/R

AWD lock indicator lamp signal T R

Distance to empty signal R T

Hand brake switch signal R R T

ASCD operation signal T R

ASCD OD cancel request T R

A/T CHECK indicator lamp signal T R

A/T position indicator lamp signal T R

A/T shift schedule change demand signal R T

Manual mode shift up signal R T

Manual mode shift down signal R T

Manual mode indicator signal T R

Signals ECM TCM

play unit

Dis-AWD con-trol unitBCM

ing angle sensor

Steer-fied meter and A/

Uni-C amp

ABS actua-tor and elec-tric unit (con-trol unit)

Driver seat con-trol unit

IPDM E/R

SKIA6176E