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BCS-4
BCM (BODY CONTROL MODULE)
Revision: 2007 April2007 M35/M45
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 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.
PKIC0276E
PKID0471E
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BCM (BODY CONTROL MODULE)
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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 stop the output, and BCM enters low power
mode. Mean while OUTPUT 2-5 send out ON signal every 60 ms, and accept only input from lighting
switch (except turn signal 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-50, "
CAN System Specification Chart" .
PKIC0272E
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BCS-6
BCM (BODY CONTROL MODULE)
Revision: 2007 April2007 M35/M45
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, sleep transient status is switches 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.
Three seconds after CAN communication of all control units stops, CAN communication inactive status
is switches 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 status.
–Key switch (ACC, ON)
–Key slot
–Intelligent Key (lock/unlock signal)
–Hazard switch
–Door lock/unlock switch
–Front door switch (driver side, passenger side)
–Rear door switch (LH, RH)
–Trunk lid opener switch
–Combination switch (passing, lighting switch 1ST position, front fog lamp)
–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.
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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
SYSTEMS CONTROLLED BY BCM, LOW TIRE PRESSURE WARNING CONTROL UNIT AND
COMBINATION METER
System Reference
Power door lockBL-24, "
POWER DOOR LOCK SYSTEM"
Power window NOTEGW-14, "POWER WINDOW SYSTEM"
Sunroof NOTERF-10, "SUNROOF"
Automatic drive positioner NOTESE-11, "AUTOMATIC DRIVE POSITIONER"
Room lamp timerLT-266, "INTERIOR ROOM LAMP"
System Reference
Panic alarmBL-217, "
VEHICLE SECURITY (THEFT WARNING) SYSTEM"
Theft warning systemBL-217, "VEHICLE SECURITY (THEFT WARNING) SYSTEM"
IVIS (NATS)BL-244, "IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)"
Headlamp
LT-42, "HEADLAMP (FOR USA) - XENON TYPE -"
LT- 8 , "HEADLAMP (FOR USA) - CONVENTIONAL TYPE -"
LT-78, "HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM -"
Auto light systemLT-115, "AUTO LIGHT SYSTEM"
Parking, license plate and tail lampsLT-248, "PARKING, LICENSE PLATE AND TAIL LAMPS"
Front fog lampLT-194, "FRONT FOG LAMP"
Front wiper and washer systemWW-4, "FRONT WIPER AND WASHER SYSTEM"
Rear window defoggerGW-71, "REAR WINDOW DEFOGGER"
System Reference
Turn signal and hazard warning lampsLT-212, "
TURN SIGNAL AND HAZARD WARNING LAMPS"
Warning chimeDI-59, "WARNING CHIME"
System Reference
Intelligent KeyBL-43, "
INTELLIGENT KEY SYSTEM"
System Reference
Oil pressure warning lampDI-39, "
WARNING LAMPS"
System Reference
Low tire pressure warning lamp and buzzerWT-9, "
TIRE PRESSURE MONITORING SYSTEM"
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BCS-8
BCM (BODY CONTROL MODULE)
Revision: 2007 April2007 M35/M45
MAJOR COMPONENTS AND CONTROL SYSTEM
System Input Output
Intelligent Key system Intelligent Key unit
All door locking actuator
Trunk lid opener 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 win-
dow, sunroofIgnition power supply Power window and sunroof system
Power supply (BAT) to power win-
dow, sunroof and power seatBattery power supplyPower window, sunroof system
and power seat
Panic alarm
Key slot
Intelligent KeyIPDM E/R
Theft warning system
All-door switch
Hood switch
Intelligent Key
Power window main switch (door lock and unlock switch)
IPDM E/R
Security indicator lamp
Auto light system
Optical sensor
Combination switchIPDM E/R
Exterior lamp battery saver control
Ignition switch
Combination switchIPDM E/R
Headlamp
Tail lampCombination switch
IPDM E/R
Combination meter
Front fog lamp Combination switch
IPDM E/R
Combination meter
Turn signal lamp Combination switch
Turn signal lamp
Combination meter
Hazard lamp Hazard switch
Turn signal lamp
Combination meter
Interior room lamp timer
Key switch
Power window main switch (door lock and unlock switch)
Front door switch driver side
All-door switchInterior room lamp
Key warning chime*
1Key switch
Front door switch driver sideCombination meter
(warning buzzer)
Light warning chime
Combination switch
Front door switch driver sideCombination meter
(warning buzzer)
Tire pressure monitoring system Low tire pressure warning control unitCombination meter
(warning buzzer)
(warning lamp)
Seat belt warning chime
Combination meter [Seat belt buckle (driver side) switch]
Ignition switchCombination meter
(warning buzzer)
Vehicle-speed-sensing intermittent
wiper
Combination switch
Unified meter and A/C amp.IPDM E/R
Rear window defogger
Multifunction switch
NAVI control unit*2
AV control unit*3
IPDM E/R
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Revision: 2007 April2007 M35/M45
NOTE:
*1: Functions only when the Intelligent Key is inserted in key slot.
*2: With navigation system
*3: Without navigation system
CAN Communication UnitNKS003XI
Refer to LAN-50, "CAN System Specification Chart" .
Page 927 of 4647
BCS-10
BCM (BODY CONTROL MODULE)
Revision: 2007 April2007 M35/M45
SchematicNKS003XJ
TKWT5096E
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BCM (BODY CONTROL MODULE)
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Revision: 2007 April2007 M35/M45
TKWB4199E