
BCS
BODY CONTROL SYSTEM
BCS-7
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FUNCTION DIAGNOSIS
BODY CONTROL SYSTEM
System DescriptionINFOID:0000000001451453
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 consump-
tion control 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 Refer to
Combination switch reading systemBCS-9, "
System Diagram"
Signal buffer systemBCS-13, "System Diagram"
Power consumption control systemBCS-14, "System Diagram"
Auto light systemEXL-12, "System Diagram"
Turn signal and hazard warning lamp systemEXL-22, "System Diagram"
Headlamp systemEXL-8, "System Diagram"
Front fog lamp systemEXL-19, "System Diagram"
Rear fog lamp systemEXL-21, "System Diagram"
Daytime light systemEXL-17, "System Diagram"
Interior room lamp control systemINL-5, "System Diagram"
Interior room lamp battery saver systemINL-12, "BATTERY SAVER : CONSULT-III Function (BCM - BATTERY SAV-
ER)"
Front wiper and washer systemWW-4, "System Diagram"
Rear wiper and washer systemWW-9, "System Diagram"
Headlamp washer systemWW-12, "System Diagram"
Warning chime systemWCS-4, "WARNING CHIME SYSTEM : System Diagram"
Door lock system WITH I-KEY, WITHOUT SUPER LOCK: DLK-20, "
DOOR LOCK AND UN-
LOCK SWITCH : System Diagram"
WITH I-KEY & SUPER LOCK: DLK-244, "DOOR LOCK AND UNLOCK
SWITCH : System Diagram"
WITHOUT I-KEY & SUPER LOCK: DLK-473, "DOOR LOCK AND UN-
LOCK SWITCH : System Diagram"
WITHOUT I-KEY, WITH SUPER LOCK: DLK-614, "DOOR LOCK AND UN-
LOCK SWITCH : System Diagram"
(NATS) Nissan anti-theft system WITH INTELLIGENT KEY SYSTEM: SEC-12, "System Diagram"
WITHOUT INTELLIGENT KEY SYSTEM: SEC-84, "System Diagram"
Rear window defogger systemDEF-6, "System Diagram"
Remote keyless entry system WITHOUT I-KEY & SUPER LOCK: DLK-475, "
REMOTE KEYLESS EN-
TRY : System Diagram"
WITHOUT I-KEY, WITH SUPER LOCK: DLK-614, "DOOR LOCK AND UN-
LOCK SWITCH : System Diagram"
Intelligent Key system WITH I-KEY, WITHOUT SUPER LOCK: DLK-23, "
INTELLIGENT KEY :
System Diagram"
WITH I-KEY & SUPER LOCK: DLK-244, "DOOR LOCK AND UNLOCK
SWITCH : System Diagram"

BCS
POWER CONSUMPTION CONTROL SYSTEM
BCS-15
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Sleep condition
Wake-up operation
BCM transmits sleep wake up signal (wake up) to each unit when any condition listed below is established,
and then goes into normal mode from low power consumption mode.
Each unit starts transmissions with CAN communication by receiving sleep wake up signals. Each unit trans-
mits wake up signals to BCM with CAN communication to convey the start of CAN communication.
Wake-up condition
Component Parts LocationINFOID:0000000001451462
CAN sleep condition BCM sleep condition
Receiving the sleep-ready signal (ready) from all units
Ignition switch: OFF
Vehicle security system alarm: No operation
Warning lamp: No operation
Warning chime: No operation
Stop lamp switch: OFF
Key switch status: No change for 2 seconds
Hazard warning lamp: No operation
Exterior lamp: OFF
Door lock status: No change for 2 seconds
CONSULT-III communication status: No communication
Door switch status: No change for 2 secondsThe controls only BCM are completed.
(Interior room lamp battery saver: Time out etc.)
BCM wake-up condition
Ignition switch: OFF → ACC or ON
Stop lamp switch: ON (Depress brake pedal)
Any door switch: OFF → ON
Lighting switch: OFF → 1ST or PASS
Hazard switch: OFF → ON
Back door opener switch OFF → ON
Remote keyless entry receiver: Receiving (with remote keyless entry)
Intelligent Key unit: Receiving (with Intelligent Key)
1. IPDM E/R E46 2. BCM M18, M19, M20 (view with
glove box removed)3. Intelligent Key unit M52 (with Intelli-
gent Key) (view with glove box re-
moved)
4. Combination meter M24
ALMIA0187ZZ

BCS-16
< FUNCTION DIAGNOSIS >
DIAGNOSIS SYSTEM (BCM)
DIAGNOSIS SYSTEM (BCM)
COMMON ITEM
COMMON ITEM : CONSULT-III Function (BCM - COMMON ITEM)INFOID:0000000001451463
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.
1: With remote keyless entry system
2: With Intelligent Key
BCM
Diagnosis mode Function Description
WORK SUPPORT Changes the setting for each system function.
SELF-DIAG RESULTS Displays the diagnosis results judged by BCM. Refer to BCS-54, "
DTCIndex".
CAN DIAG SUPPORT MNTR Monitors the reception status of CAN communication viewed from BCM.
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 Enables to read and save the vehicle specification.
Enables to write the vehicle specification when replacing BCM.
System Sub system selection itemDiagnosis mode
WORK SUPPORT DATA MONITOR ACTIVE TEST
BCM BCM×
Door lock DOOR LOCK×××
Rear window defogger REAR DEFOGGER××
Warning chime BUZZER××
Interior room lamp timer INT LAMP×××
Remote keyless entry system
1MULTI REMOTE ENT×××
Exterior lamp HEAD LAMP×××
Wiper and washer WIPER×××
Turn signal and hazard warning lamps FLASHER××
Air conditioner AIR CONDITONER×
Intelligent Key system
2INTELLIGENT KEY×
Combination switch COMB SW×
Immobilizer IMMU××
Interior room lamp battery saver BATTERY SAVER×××
Trunk open (sedan)/Back door open
(hatch back)DOOR LOCK××
Vehicle security system THEFT ALM×××
Signal buffer system SIGNAL BUFFER××
PTC heater system PTC HEATER××

BCS-18
< FUNCTION DIAGNOSIS >
DIAGNOSIS SYSTEM (BCM)
*: With super lock
REAR WINDOW DEFOGGER
REAR WINDOW DEFOGGER : CONSULT-III Function (BCM - REAR DEFOGGER)
INFOID:0000000001451466
DATA MONITOR
ACTIVE TEST
BUZZER
BUZZER : CONSULT-III Function (BCM - BUZZER)INFOID:0000000001451467
DATA MONITOR
ACTIVE TEST
DOOR LOCK INDThis test is able to check door lock indicator (built in door lock and unlock switch on center
console) operation [ON/OFF].
TRUNK/BACK DOOR This test is able to check trunk/back door lock operation [LOCK (SET)/UNLOCK (RE-
LEASE)]. Test item Description
Monitor Item
[Unit]Description
ENGINE STATUS [RUN/
STOP]Indicates engine running status.
IGN ON SW [ON/OFF] Indicates condition of ignition switch in ON position.
REAR DEF SW [ON/OFF] Displays “Press (ON)/other (OFF)” status determined with the rear window defogger switch.
Test Item Description
REAR DEFOGGER Give a drive signal to the rear window defogger relay to activate it.
Monitor Item
[Unit]Description
IGN ON SW [ON/OFF] Ignition switch (ON) status judged by ignition power supply input.
PUSH SW
1 [ON/OFF]Ignition knob status.
KEY SW
2 [ON/OFF]Key switch status.
DOOR SW -DR [ON/OFF] Front door switch (driver side) status judged by BCM.
DOOR SW -AS [ON/OFF] Front door switch (passenger side) status judged by BCM.
DOOR SW -RR [ON/OFF] Rear door switch RH status judged by BCM.
DOOR SW -RL [ON/OFF] Rear door switch LH status judged by BCM.
BACK DOOR SW [ON/OFF] Back door switch status judged by BCM.
CDL LOCK SW [ON/OFF] Door lock/unlock switch status.
CDL UNLOCK SW [ON/OFF] Door lock/unlock switch status.
LIGHTING SW [ON/OFF]Lighting switch status judged by the lighting switch signal read with combination switch reading func-
tion.
TRNK OPNR SW [ON/OFF] Trunk switch status.
Test Item Description
LIGHT WARN ALM The light reminder warning operation can be checked by operating the relevant function (On/Off).
KEY REMINDER WARN The key reminder warning operation can be checked by operating the relevant function (On/Off).

BCS
DIAGNOSIS SYSTEM (BCM)
BCS-19
< FUNCTION DIAGNOSIS >
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INT LAMP
INT LAMP : CONSULT-III Function (BCM - INT LAMP)INFOID:0000000001451468
DATA MONITOR
1: With Intelligent Key
2: With remote keyless entry
ACTIVE TEST
MULTIREMOTE ENT
MULTIREMOTE ENT : CONSULT-III Function (BCM - MULTIREMOTE ENT)
INFOID:0000000001451469
WORK SUPPORT
BACK DR OPEN WARN The back door open warning operation can be checked by operating the relevant function (On/Off).
DOOR WARNING IND The door open warning operation can be checked by operating the relevant function (On/Off).Test Item Description
Monitor item
[Unit]Description
IGN ON SW [ON/OFF] Ignition switch (ON) status judges from IGN signal (ignition power supply)
PUSH SW
1 [ON/OFF]Push switch status received from Intelligent Key unit by CAN communication
KEY SW
2 [ON/OFF]The switch status input from key switch
DOOR SW-DR [ON/OFF] The switch status input from front door switch (driver side)
DOOR SW-AS [ON/OFF] The switch status input from front door switch (passenger side)
DOOR SW-RR [ON/OFF] The switch status input from rear door switch RH
DOOR SW- RL [ON/OFF] The switch status input from rear door switch LH
BACK DOOR SW [ON/OFF] The switch status input from back door switch
CDL LOCK SW [ON/OFF] Lock switch status input from door lock and unlock switch
CDL UNLOCK SW [ON/OFF] Unlock switch status input from door lock and unlock switch
KEYLESS LOCK
2 [ON/OFF]Lock signal status received from remote keyless entry receiver (integrated in the
BCM)
KEYLESS UNLOCK
2 [ON/OFF]Unlock signal status received from remote keyless entry receiver (integrated in the
BCM)
I-KEY LOCK
1 [ON/OFF]Lock signal status received from Intelligent Key unit by CAN communication
I-KEY UNLOCK
1 [ON/OFF]Unlock signal status received from Intelligent Key unit by CAN communication
I-KEY ALL UNL
1 [ON/OFF]Unlock signal status received from Intelligent Key unit by CAN communication
Test item Operation Description
INT LAMPONOutputs the interior room lamp control signal to turn the interior room lamps ON.
[Map lamp, personal lamp, room lamp, luggage room lamp (when applicable lamps
switch is in DOOR position.)]
OFF Stops the interior room lamp control signal to turn the interior room lamps.

BCS-20
< FUNCTION DIAGNOSIS >
DIAGNOSIS SYSTEM (BCM)
DATA MONITOR
ACTIVE TEST
HEADLAMP
HEADLAMP : CONSULT-III Function (BCM - HEAD LAMP)INFOID:0000000001451470
WORK SUPPORT
*: Initial setting
DATA MONITOR
Work Item Description
HAZARD LAMP SETAnswer back function (hazard) mode can be changed in this mode.
For the detail of the setting, refer to DLK-617, "
REMOTE KEYLESS ENTRY : System Descrip-
tion".
AUTO LOCK SETAuto door lock time can be changed in this mode.
MODE 1: 1 minute
MODE 2: 2 minutes
MODE 3: 3 minutes
MODE 4: 4 minutes
MODE 5: 5 minutes
Monitor Item
[Unit}Condition
IGN ON SW [ON/OFF] Indicates condition of ignition switch in ON position.
KEY SW [ON/OFF] Indicates condition of key switch.
KEYLESS LOCK [ON/OFF] Indicates condition of lock signal from keyfob.
KEYLESS UNLOCK [ON/OFF] Indicates condition of unlock signal from keyfob.
DOOR SW-DR [ON/OFF] Indicates condition of front door switch (driver side).
DOOR SW-AS [ON/OFF] Indicates condition of front door switch (passenger side).
DOOR SW-RR [ON/OFF] Indicates condition of rear door switch RH.
DOOR SW-RL [ON/OFF] Indicates condition of rear door switch LH.
BACK DOOR SW [ON/OFF] Indicates condition of back door switch.
CDL LOCK SW [ON/OFF] Indicates condition of door lock and unlock switch.
CDL UNLOCK SW [ON/OFF] Indicates condition of door lock and unlock switch.
RKE LOCK AND UNLOCK This item is indicated, but not monitored.
Test Item Description
DOOR LOCKThis test is able to check warning chime in combination meter operation. [ALL LOCK/ALL UN-
LOCK/DR UNLOCK/OTHER UNLOCK]
INT LAMP This test is able to check interior lamp operation [ON/OFF].
FLASHER This test is able to check flasher operation [LH/RH/OFF].
Work item Setting Description
BATTERY SAVER SETON*
Battery saver mode can be changed.
OFF
Monitor item
[Unit]Description
IGN ON SW [ON/OFF] Ignition switch (ON) status judged from IGN signal (ignition power supply)

BCS-26
< FUNCTION DIAGNOSIS >
DIAGNOSIS SYSTEM (BCM)
*: Each lamp switch is in ON position.
THEFT ALM
THEFT ALM : CONSULT-III Function (BCM - THEFT ALM)INFOID:0000000001451479
WORK SUPPORT
SIGNAL BUFFER
SIGNAL BUFFER : CONSULT-III Function (BCM - SIGNAL BUFFER)INFOID:0000000001451480
DATA MONITOR
ACTIVE TEST
PTC HEATER
PTC HEATER : CONSULT-III Function (BCM - PTC HEATER)INFOID:0000000001451481
DATA MONITOR
ACTIVE TEST
Work Item Description
SECURITY ALARM SETVehicle security function mode can be changed in this mode.
ON: Vehicle security function is ON.
OFF: Vehicle security function is OFF.
Monitor Item
[Unit]Description
OIL PRESS SW [ON/OFF] Displays the status of oil pressure switch received from IPDM E/R via CAN communication.
Test Item Operation Description
OIL PRESSURE SWOFF OFF
ONBCM transmits the oil pressure switch signal to the combination meter via CAN communica-
tion, which illuminates the oil pressure warning lamp in the combination meter.
Monitor Item
[Unit]Description
ELEC PWR CUT
[OFF/FREEZ/INHBT]Indicate [OFF/FREEZ/INHBT] condition of the PTC heater states.
FA N O N S I G
[On/Off]Displays [FAN (ON)/FAN (OFF)] status as judged from blower fan motor signal.
ENGINE STATUS
[STOP/STAL/RUN/CRA]Indicate [STOP/STALL/RUN/CRA] condition of the engine states.
ENG COOLNT T
[°C]The engine coolant temperature (determined by the signal voltage of the engine coolant tem-
perature sensor) is displayed.
BATTERY VOLT
[V]The power supply voltage of BCM is displayed.
ENGINE RPM
[rpm]Indicates the engine speed computed from the signal of the crankshaft position sensor.
OUTSIDE TEMP
[°C]The outside air temperature (determined by the signal voltage of the OAT sensor) is displayed.

BCS-36
< ECU DIAGNOSIS >
BCM (BODY CONTROL MODULE)
ENGINE RPM
NOTE:
Diesel engine models
onlyEngine runningApproximately the same as tachom-
eter reading
ENGINE RUNEngine stopped OFF
Engine running ON
ENGINE STATUS
NOTE:
Diesel engine models
onlyEngine stopped STOP
While the engine stalls STALL
Engine running RUN
At engine cranking CRA
FA N O N S I GFan switch OFF OFF
Fan switch ON ON
FR FOG SWFront fog lamp switch OFF OFF
Front fog lamp switch ON ON
FR WASHER SWFront washer switch OFF OFF
Front washer switch ON ON
FR WIPER LOWFront wiper switch OFF OFF
Front wiper switch LO ON
FR WIPER HIFront wiper switch OFF OFF
Front wiper switch HI ON
FR WIPER INTFront wiper switch OFF OFF
Front wiper switch INT ON
FR WIPER STOPAny position other than front wiper stop position OFF
Front wiper stop position ON
HAZARD SWWhen hazard switch is not pressed OFF
When hazard switch is pressed ON
LIGHT SW 1STLighting switch OFF OFF
Lighting switch 1st ON
H/L SW POSHeadlamp switch OFF OFF
Headlamp switch 1st ON
HI BEAM SWHigh beam switch OFF OFF
High beam switch HI ON
HOOD SWClose the hood
NOTE:
Vehicles without theft warning system are OFF-fixedOFF
Open the hood ON
H/L WASH SWNOTE:
The item is indicated, but not monitoredOFF
IGN ON SWIgnition switch OFF or ACC OFF
Ignition switch ON ON
IGN SW CANIgnition switch OFF or ACC OFF
Ignition switch ON ON
INT VOLUME Wiper intermittent dial is in a dial position 1 - 7 1 - 7
I-KEY LOCK
1LOCK button of Intelligent Key is not pressed OFF
LOCK button of Intelligent Key is pressed ON Monitor Item Condition Value/Status