2008 INFINITI FX35 Body

BCS-6
< SERVICE INFORMATION >
BCM (BODY CONTROL MODULE)
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-43, "
CAN System Specification Chart".
BCM STATUS CONTROL
BCM changes its status depending on the operation stat us 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 isactive, 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
PKIC4919E
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3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

BCM (BODY CONTROL MODULE)BCS-7
< SERVICE INFORMATION >
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- 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.
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, CO MBINATION METER AND IPDM E/R
System Reference
Power door lock system BL-21
Remote keyless entry systemBL-50
Power window system NOTEGW-15
Sunroof NOTERF-10
Room lamp timerLT- 1 3 8
Rear wiper and washer systemWW-30
System Reference
Panic alarm 
BL-50
BL-76
Theft warning system BL-163
IVIS (NATS)BL-185
HeadlampLT- 5
Daytime light systemLT- 3 2
Auto light systemLT- 4 7
Front fog lampLT- 6 6
 Parking, license plate, side marker and tail lamps
 Exterior lamp battery saver control LT- 11 8
Front wiper and washer system
WW-4
Rear window defoggerGW-60
System Reference
Warning chime DI-51
Turn signal and hazard warning lampsLT- 7 8
Tire pressure monitoring systemWT-10
System Reference
Intelligent Key system BL-76
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
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BCS-8
< SERVICE INFORMATION >
BCM (BODY CONTROL MODULE)
MAJOR COMPONENTS AND CONTROL SYSTEM
System Reference
Oil pressure warning lamp DI-34
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 fobIPDM 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 switchIPDM E/R
Exterior lamp battery saver control  Ignition switch
 Combination switchIPDM E/R
Headlamp Combination switch IPDM E/R
Daytime light system  Combination meter
ECM
 Combination switch
 Ignition switchIPDM 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
Key warning chime  Key switch
 Front door switch driver sideCombination meter
(warning buzzer)
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

BCM (BODY CONTROL MODULE)BCS-9
< SERVICE INFORMATION >
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CAN Communication UnitINFOID:0000000001328609
Refer to LAN-43, "CAN System Specification Chart".
Light warning chime  Combination switch
 Key switch
 Front door switch driver sideCombination 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 switchIPDM E/R
Rear wiper and washer system  Combination switch
 Ignition switchRear 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
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
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BCS-10
< SERVICE INFORMATION >
BCM (BODY CONTROL MODULE)
Schematic
INFOID:0000000001328610
TKWM4487E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

BCM (BODY CONTROL MODULE)BCS-11
< SERVICE INFORMATION >
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CONSULT-III Function (BCM)INFOID:0000000001328611
CONSULT-III can display each diagnostic item using the diagnostic test mode shown following.
TKWM4453E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

BCS-12
< SERVICE INFORMATION >
BCM (BODY CONTROL MODULE)
ITEMS OF EACH PART
BCM can perform the following functions for each system.
NOTE:
CONSULT-III displays systems equipped in the vehicle.
×:Applicable
NOTE:
 *1: Vehicle with remote keyless entry system display this item.
 *2: Vehicle with Intelligent Key system display this item.
 *3: This item is displayed, but does not function.
WORK SUPPORT
Display Item List
BCM Diagnostic test item Check item, diagnostic test mode Content
Inspection by part WORK SUPPORT Changes setting of each function.
SELF-DIAG RESULTS BCM performs self-diagnosis of CAN communication.
DATA MONITOR Displays the input data of BCM in real time.
CAN DIAG SUPPORT MNTR
The transmit/receive diagnosis result of CAN communication can be
read.
ACTIVE TEST Gives a drive signal to a load to check the operation.
ECU PART NUMBER ECM part number can be read.
CONFIGURATION (Not be used)
System and item CONSULT-III display Diagnostic test mode (Inspection by part)
WORK SUPPORT DATA MONITOR ACTIVE TEST
BCM BCM ×
Power door lock system DOOR LOCK ×××
Rear window defogger REAR DEFOGGER ××
Warning chime BUZZER ××
Room lamp timer INT LAMP ×××
Remote keyless entry system*
1MULTI REMOTE ENT ×××
Headlamp HEAD LAMP ×××
Wiper WIPER ×××
Turn signal lamp
Hazard lamp FLASHER
××
Blower fan switch signal
A/C switch signal AIR CONDITONER
×
Intelligent Key system*
2INTELLIGENT KEY ×
Combination switch COMB SW ×
NVIS IMMU ××
Room lamp battery saver BATTERY SAVER ×× ×
Trunk lid TRUNK*
3××
Vehicle security system THEFT ALM ×××
Retained power control RETAINED PWR ×××
Oil pressure swit ch SIGNAL BUFFER ××
Low tire pressure warning system AIR PRESSURE MONITOR ×××
Panic system PANIC ALARM ×
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
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BCM (BODY CONTROL MODULE)BCS-13
< SERVICE INFORMATION >
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SELF-DIAG RESULTS
U1000 CAN Communication CircuitINFOID:0000000001606767
1.PERFORM SELF DIAGNOSTIC
1. Turn ignition switch ON and wait for 2 seconds or more.
2. Check “Self Diagnostic Result” of BCM.
Is
“CAN COMM CIRCUIT” displayed?
YES >> Refer to LAN-14, "Trouble Diagnosis Flow Chart".
NO >> Refer to GI-25, "
How to Perform Efficient Diagnosis for an Electrical Incident".
Removal and Installation of BCMINFOID:0000000001328613
REMOVAL
1. Remove the dash side finisher (LH). Refer to EI-38.
2. Disconnect BCM connector.
3. Remove bracket mounting screws (3) to remove BCM and fuse block with bracket.
Item Description
RESET SETTING VALUE Return a value set with WORK SUPPORT of each system to a default value in factory shipment.
DTC DTC Detection Condition Possible cause
U1000: CAN COMM CIRCUIT When BCM cannot communicate CAN com-
munication signal continuously for 2 sec-
onds or more. Any item (or items) of the following listed below is
malfunctioning in CAN communication system.
Transmission
 Receiving (ECM)
 Receiving (IPDM E/R)
 Receiving (METER/M&A)
 Receiving (I-KEY)
SKIA4964E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
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