
BCS-6
< FUNCTION DIAGNOSIS >
BODY CONTROL SYSTEM
FUNCTION DIAGNOSIS
BODY CONTROL SYSTEM
System DescriptionINFOID:0000000003809584
OUTLINE
BCM (Body Control Module) controls the various electrical components. It inputs the information required to
the control from CAN communication and the signal received from each switch and sensor.
BCM has combination switch reading function for reading the operation status of combination switches (light,
turn signal, wiper and washer) in addition to a function for controlling the operation of various electrical com-
ponents. It also has the signal transmission function as the passed point of signal and the power saving con-
trol function that reduces the power consumption with the ignition switch OFF.
BCM is equipped with the diagnosis function that performs the diagnosis with CONSULT-III and various set-
tings.
BCM CONTROL FUNCTION LIST
System Reference
Combination switch reading systemBCS-8, "
System Diagram"
Signal buffer systemBCS-12, "System Diagram"
Power consumption control systemBCS-13, "System Diagram"
Auto light systemEXL-13, "System Diagram" (Xenon type headlamp)
EXL-202, "
System Diagram" (Halogen type headlamp)
Turn signal and hazard warning lamp systemEXL-19, "
System Diagram" (Xenon type headlamp)
EXL-206, "
System Diagram" (Halogen type headlamp)
Headlamp systemEXL-11, "
System Diagram" (Xenon type headlamp)
EXL-200, "
System Diagram" (Halogen type headlamp)
Parking, license plate and tail lamps systemEXL-21, "
System Diagram" (Xenon type headlamp)
EXL-208, "
System Diagram" (Halogen type headlamp)
Front fog lamp systemEXL-17, "
System Diagram" (Xenon type headlamp)
EXL-204, "
System Diagram" (Halogen type headlamp)
Rear fog lamp systemEXL-23, "
System Diagram" (Xenon type headlamp)
EXL-210, "
System Diagram" (Halogen type headlamp)
Exterior lamp battery saver systemEXL-25, "
System Diagram" (Xenon type headlamp)
EXL-212, "
System Diagram" (Halogen type headlamp)
Interior room lamp control system
INL-5, "
System Diagram"Step lamp system
Trunk room lamp system
Interior room lamp battery saver systemINL-9, "
System Diagram"
Front wiper and washer systemWW-5, "System Diagram"
Headlamp washer systemWW-10, "System Diagram"
Warning chime systemWCS-5, "WARNING CHIME SYSTEM : System Diagram"
Door lock systemDLK-11, "System Diagram"
Trunk open systemDLK-38, "System Diagram"
Automatic drive positioner systemADP-12, "AUTOMATIC DRIVE POSITIONER SYSTEM : System
Diagram"
Nissan Vehicle Immobilizer System (NVIS) - NATSSEC-14, "System Diagram"
Vehicle security systemSEC-17, "System Diagram"
Rear window defogger systemDEF-4, "
WITH AV CONTROL UNIT : System Diagram" (With
AV control unit)
DEF-6, "
WITHOUT AV CONTROL UNIT : System Diagram"
(Without AV control unit)

BCS
BODY CONTROL SYSTEM
BCS-7
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Component Parts LocationINFOID:0000000003809585
Intelligent Key system/engine start systemDoor lock function
DLK-14, "INTELLIGENT KEY SYSTEM : System Diagram"
Trunk open function
Remote keyless entry
function
Key reminder function
Warning function
Engine start function
Power window systemPWC-7, "
SystemDiagram"
System Reference
1. BCM
A. Behind of combination meter
JPMIA1040ZZ

BCS-14
< FUNCTION DIAGNOSIS >
POWER CONSUMPTION CONTROL SYSTEM
Sleep condition
Wake-up operation
BCM changes from the low power consumption mode to the CAN communication sleep mode when the any
of the BCM wake-up conditions is fulfilled. Only the control with BCM is activated.
BCM transmits the sleep wake up signal (wake up) to each unit when any of the CAN wake-up conditions is
fulfilled. It changes from the low power consumption mode or the CAN communication sleep mode to the
normal mode.
Each unit starts the transmission of CAN communication with the sleep wake up signal. In addition, the com-
bination meter transmits the wake up signal to BCM via CAN communication to report the CAN communica-
tion start.
Wake-up condition
CAN sleep condition BCM sleep condition
Receiving the sleep-ready signal (ready) from all units
Ignition switch: OFF
Vehicle security system: Not operation
Warning chime: Not operation
Intelligent Key system buzzer: Not operation
Trunk room lamp switch status: No change
Stop lamp switch: OFF
Key slot (card switch) status: No change
Turn signal indicator lamp: Not operation
Exterior lamp: OFF
Door lock status: No change
CONSULT-III communication status: Not communication
Meter display signal: Non-transmission
Door switch status: No change
Rear window defogger: OFF Interior room lamp battery saver: Time out
Push-button ignition switch illumination: OFF
Nissan Vehicle Immobilizer System (NVIS) - NATS: Not opera-
tion
Remote keyless entry receiver communication status: No com-
munication
ACC indicator lamp: Not operation
ON indicator lamp: Not operation
BCM wake-up condition CAN wake-up condition
Trunk lid opener switch: OFF → ON
Remote keyless entry receiver: Receiving
Door lock and unlock switch:
NEUTRAL → LOCK, NEUTRAL → UNLOCK
Front door lock assembly driver side (unlock sensor):
OFF → ON, ON → OFF Receiving the sleep-ready signal (Not-ready) from any units
Key slot (key switch): OFF → ON, ON → OFF
Push-button ignition switch (push switch): OFF→ ON
Hazard switch: OFF → ON
PASSING switch: OFF → ON, ON → OFF
TAIL LAMP switch: OFF → ON
Driver door switch: OFF → ON, ON → OFF
Passenger door switch: OFF → ON, ON → OFF
Rear RH door switch: OFF → ON, ON → OFF
Rear LH door switch: OFF → ON, ON → OFF
Trunk room lamp switch: OFF → ON, ON → OFF
Driver door request switch: OFF → ON
Passenger door request switch: OFF → ON
Trunk lid request switch: OFF → ON
Stop lamp switch: ON

BCS-16
< FUNCTION DIAGNOSIS >
DIAGNOSIS SYSTEM (BCM)
DIAGNOSIS SYSTEM (BCM)
COMMON ITEM
COMMON ITEM : CONSULT-III Function (BCM - COMMON ITEM)INFOID:0000000003809594
APPLICATION ITEM
CONSULT-III performs the following functions via CAN communication with BCM.
SYSTEM APPLICATION
BCM can perform the following functions for each system.
NOTE:
It can perform the diagnosis modes except the following for all sub system selection items.
×: Applicable item
NOTE:
*: This item is displayed, but is not used.
FREEZE FRAME DATA (FFD) AND IGN COUNTER
Freeze Frame Data
Diagnosis mode Function Description
Work Support Changes the setting for each system function.
Self Diagnostic Result Displays the diagnosis results judged by BCM.
CAN Diag Support MonitorMonitors the reception status of CAN communication viewed from BCM. Refer to CONSULT-III opera-
tion manual.
Data Monitor The BCM input/output signals are displayed.
Active Test The signals used to activate each device are forcibly supplied from BCM.
Ecu Identification The BCM part number is displayed.
Configuration Read and save the vehicle specification.
Write the vehicle specification when replacing BCM.
System Sub system selection itemDiagnosis mode
Work Support Data Monitor Active Test
Door lock DOOR LOCK×××
Rear window defogger REAR DEFOGGER××
Warning chime BUZZER××
Interior room lamp timer INT LAMP×××
Exterior lamp HEAD LAMP×××
Wiper and washer WIPER×××
Turn signal and hazard warning lamps FLASHER×××
— AIR CONDITONER*
Intelligent Key system
Engine start systemINTELLIGENT KEY×××
Combination switch COMB SW×
Body control system BCM×
NVIS - NATS IMMU××
Interior room lamp battery saver BATTERY SAVER×××
Trunk lid opener system TRUNK××
Vehicle security system THEFT ALM×××
— RETAINED PWR*×
Signal buffer system SIGNAL BUFFER××
— TPMS (AIR PRESSURE MONITOR)*×××

BCS
DIAGNOSIS SYSTEM (BCM)
BCS-19
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BUZZER : CONSULT-III Function (BCM - BUZZER)INFOID:0000000003897064
CONSULT-III APPLICATION ITEMS
DATA MONITOR
ACTIVE TEST
INT LAMP
INT LAMP : CONSULT-III Function (BCM - INT LAMP)INFOID:0000000003897059
WORK SUPPORT
Test item Diagnosis mode Description
BUZZERData Monitor Displays BCM input data in real time.
Active Test Operation of electrical loads can be checked by sending driving signal to them.
Display item
[Unit]Description
PUSH SW
[On/Off]Status of push button ignition switch judged by BCM.
UNLK SEN-DR
[On/Off]Status of unlock sensor judged by BCM.
VEH SPEED 1
[km/h]Value of vehicle speed signal received from ABS actuator and electric unit (control unit) with CAN
communication line.
KEY SW-SLOT
[On/Off]Status of key slot judged by BCM.
TAIL LAMP SW
[On/Off]Status of each switch judged by BCM using the combination switch readout function.
FR FOG SW
[On/Off]Status of front fog lamp switch judged by BCM.
DOOR SW-DR
[On/Off]Status of driver side door switch judged by BCM.
Display item
[Unit]Description
IGN KEY WARN ALM The key warning chime operation can be checked by operating the relevant function (On/Off).
LIGHT WARN ALM The light warning chime operation can be checked by operating the relevant function (On/Off).
RUN FLAT/T WARN BUZZER This item is displayed, but not function.
JPLIA0093GB

BCS-24
< FUNCTION DIAGNOSIS >
DIAGNOSIS SYSTEM (BCM)
FLASHER
FLASHER : CONSULT-III Function (BCM - FLASHER)INFOID:0000000003897062
WORK SUPPORT
*: Factory setting
DATA MONITOR
ACTIVE TEST
Test item Operation Description
FRONT WIPERHiTransmits the front wiper request signal (HI) to IPDM E/R with CAN communication to
operate the front wiper HI operation.
LoTransmits the front wiper request signal (LO) to IPDM E/R with CAN communication to
operate the front wiper LO operation.
INTTransmits the front wiper request signal (INT) to IPDM E/R with CAN communication to
operate the front wiper INT operation.
Off Stops transmitting the front wiper request signal to stop the front wiper operation.
HEADLAMP WASHER OnTransmits the headlamp washer request signal to IPDM E/R with CAN communication to
operate the headlamp washer operation.
Service item Setting item Setting
HAZARD ANSWER
BACKLock Only* With locking only
Sets the hazard warning lamp answer back function
when the door is lock/unlock with the request switch or
the key fob. Unlk Only With unlocking only
Lock/Unlk With locking/unlocking
Off Without the function
Monitor item
[Unit]Description
REQ SW-DR
[On/Off]The switch status input from the request switch (driver side)
REQ SW-AS
[On/Off]The switch status input from the request switch (passenger side)
PUSH SW
[On/Off]The switch status input from the push-button ignition switch
TURN SIGNAL R
[On/Off]
Each switch status that BCM detects from the combination switch reading function
TURN SIGNAL L
[On/Off]
HAZARD SW
[On/Off]The switch status input from the hazard switch
RKE-LOCK
[On/Off]Lock signal status received from the remote keyless entry receiver
RKE-UNLOCK
[On/Off]Unlock signal status received from the remote keyless entry receiver
RKE-PANIC
[On/Off]Panic alarm signal status received from the remote keyless entry receiver
Test item Operation Description
FLASHERRH Outputs the voltage to blink the right side turn signal lamps.
LH Outputs the voltage to blink the left side turn signal lamps.
Off Stops the voltage to turn the turn signal lamps OFF.

BCS
DIAGNOSIS SYSTEM (BCM)
BCS-25
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INTELLIGENT KEY
INTELLIGENT KEY : CONSULT-III Function (BCM - INTELLIGENT KEY)INFOID:0000000003897053
BCM CONSULT-III FUNCTION
CONSULT-III performs the following functions via CAN communication with BCM.
WORK SUPPORT
Diagnosis mode Function Description
WORK SUPPORT Changes the setting for each system function.
SELF-DIAG RESULTS Displays the diagnosis results judged by BCM.
DATA MONITOR The BCM input/output signals are displayed.
ACTIVE TEST The signals used to activate each device are forcibly supplied from BCM.
Monitor item Description
REMO CONT ID CONFIR It can be checked whether Intelligent Key ID code is registered or not in this mode.
AUTO LOCK SETAuto door lock time can be changed in this mode.
MODE 1: 1 minute
MODE 2: 5 minutes
MODE 3: 30 seconds
MODE 4: 2 minutes
LOCK/UNLOCK BY I-KEYDoor lock/unlock function by door request switch (driver side and passenger side) mode can be
changed to operate (WITH) or not operate (WITHOUT) in this mode.
ENGINE START BY I-KEYEngine start function mode can be changed to operate (WITH) or not operate (WITHOUT) in this
mode.
TRUNK/GLASS HATCH OPENBuzzer reminder function mode by trunk lid opener request switch can be changed to operate
(WITH) or not operate (WITHOUT) in this mode.
PANIC ALARM SETNOTE:
This item is displayed, but cannot be used.
PW DOWN SETNOTE:
This item is displayed, but cannot be used.
TRUNK OPEN DELAYTrunk button pressing on Intelligent Key button can be selected as per the following in this mode.
MODE 1: Press and hold
MODE 2: Press twice
MODE 3: Press and hold, or press twice
LO-BATT OF KEY FOB WARNIntelligent Key low battery warning mode can be changed to operate (WITH) or not operate (WITH-
OUT) in this mode.
ANTI KEY LOCK IN FUNCTIKey reminder function mode can be changed to operate (WITH) or not operate (WITHOUT) in this
mode.
HAZARD ANSWER BACKHazard reminder function mode can be selected from the following in this mode.
LOCK ONLY: Door lock operation only
UNLOCK ONLY: Door unlock operation only
LOCK/UNLOCK: Lock/unlock operation
OFF: Non-operational
ANS BACK I-KEY LOCKBuzzer reminder function (lock operation) mode by door request switch (driver side and passenger
side) can be selected from the following is this mode.
Horn chirp: Sound horn
Buzzer: Sound Intelligent Key warning buzzer
OFF: Non-operational
ANS BACK I-KEY UNLOCKBuzzer reminder function (unlock operation) mode by door request switch can be changed to op-
erate (ON) or not operate (OFF) in this mode.
SHORT CRANKING OUTPUTStarter motor can operate during the times below.
70 msec
100 msec
200 msec

BCS
DIAGNOSIS SYSTEM (BCM)
BCS-27
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ACTIVE TEST
RKE-PANICNOTE:
This item is displayed, but cannot be monitored.
RKE-P/W OPENNOTE:
This item is displayed, but cannot be monitored.
RKE-MODE CHG Indicates [ON/OFF] condition of MODE CHANGE signal from Intelligent Key.
RKE OPE COUN1When remote keyless entry receiver receives the signal transmitted while operating on Intelligent Key, the
numerical values start changing.
RKE OPE COUN2NOTE:
This item is displayed, but cannot be monitored. Monitor Item Condition
Test item Description
BATTERY SAVERThis test is able to check interior room lamp operation.
The interior room lamp will be activated when “ON” on CONSULT-III screen is touched.
PW REMOTO DOWN SETNOTE:
This item is displayed, but cannot be used.
OUTSIDE BUZZERThis test is able to check Intelligent Key warning buzzer operation.
The Intelligent Key warning buzzer will be activated when “ON” on CONSULT-III screen is touched.
INSIDE BUZZERThis test is able to check warning chime in combination meter operation.
Take away warning chime sounds when “TAKE OUT” on CONSULT-III screen is touched.
Key warning chime sounds when “KEY” on CONSULT-III screen is touched.
P position warning chime sounds when “KNOB” on CONSULT-III screen is touched.
INDICATORThis test is able to check warning lamp operation.
“KEY” Warning lamp illuminates when “RED ON” on CONSULT-III screen is touched.
“KEY” Warning lamp blinks when “RED IND” on CONSULT-III screen is touched.
INT LAMPThis test is able to check interior room lamp operation.
The interior room lamp will be activated when “ON” on CONSULT-III screen is touched.
LCDThis test is able to check meter display information
Engine start information displays when “BP N” on CONSULT-III screen is touched.
Engine start information displays when “BP I” on CONSULT-III screen is touched.
Key ID warning displays when “ID NG” on CONSULT-III screen is touched.
Steering lock information displays when “ROTAT” on CONSULT-III screen is touched.
P position warning displays when “SFT P” on CONSULT-III screen is touched.
Intelligent Key insert information displays when “INSRT” on CONSULT-III screen is touched.
Intelligent Key low battery warning displays when “BATT” on CONSULT-III screen is touched.
Take away warning displays when “OUTKEY” on CONSULT-III screen is touched.
OFF position warning displays when “LK WN” on CONSULT-III screen is touched.
TRUNK/GLASS HATCHThis test is able to check trunk lid opener actuator open operation.
This actuator opens when “OPEN” on CONSULT-III screen is touched.
FLASHERThis test is able to check security hazard lamp operation.
The hazard lamps will be activated when “RH” or “LH”on CONSULT-III screen is touched.
HORNThis test is able to check horn operation.
The horn will be activated when “ON” on CONSULT-III screen is touched.
P RANGEThis test is able to check control device power supply
Control device power is supplied when “ON” on CONSULT-III screen is touched.
ENGINE SW ILLUMIThis test is able to check push-ignition switch illumination operation.
Push-ignition switch illumination illuminates when “ON” on CONSULT-III screen is touched.
LOCK INDICATORThis test is able to check LOCK indicator in push-ignition switch operation.
LOCK indicator in push-ignition switch illuminates when “ON” on CONSULT-III screen is touched.
ACC INDICATORThis test is able to check ACC indicator in push-ignition switch operation.
ACC indicator in push-ignition switch illuminates when “ON” on CONSULT-III screen is touched.
IGNITION ON INDThis test is able to check ON indicator in push-ignition switch operation.
ON indicator in push-ignition switch illuminates when “ON” on CONSULT-III screen is touched.