Nissan March K13. Instruction — part 10
BCS
SYSTEM
BCS-13
< SYSTEM DESCRIPTION >
[WITH INTELLIGENT KEY SYSTEM]
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POWER CONSUMPTION CONTROL SYSTEM : System Diagram
INFOID:0000000006014821
POWER CONSUMPTION CONTROL SYSTEM : System Description
INFOID:0000000006014822
OUTLINE
• BCM incorporates a power saving control function that reduces the power consumption according to the
vehicle status.
• BCM switches the status (control mode) by itself with the power saving control function. It performs the sleep
request to each unit (IPDM E/R and combination meter) that operates with the ignition switch OFF.
Normal mode (wake-up)
- CAN communication is normally performed with other units
- Each control with BCM is operating properly
CAN communication sleep mode (CAN sleep)
- CAN transmission is stopped
- Control with BCM only is operating
Low power consumption mode (BCM sleep)
- Low power consumption control is active
- CAN transmission is stopped
LOW POWER CONSUMPTION CONTROL WITH BCM
BCM reduces the power consumption with the following operation in the low power consumption mode.
• The reading interval of the each switches changes from 10 ms interval to 60 ms interval.
Sleep mode activation
• BCM receives the sleep-ready signal (ready) from IPDM E/R and combination meter via CAN communica-
tion.
• BCM transmits the sleep wake up signal (sleep) to each unit when all of the CAN sleep conditions are ful-
filled.
• Each unit stops the transmission of CAN communication with the sleep wake up signal. BCM is in CAN com-
munication sleep mode.
• BCM is in the low power consumption mode and perform the low power consumption control when all of the
BCM sleep conditions are fulfilled with CAN sleep condition.
Sleep condition
JPMIA0731GB
CAN sleep condition
BCM sleep condition
• Receiving the sleep-ready signal (ready) from all units
• Ignition switch: OFF
• Panic alarm: Not operation
• Warning chime: Not operation
• Intelligent Key system buzzer: Not operation
• Stop lamp switch: OFF
• 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
• Driver door lock status: No change
• Interior room lamp battery saver: Time out
• Nissan anti-theft system (NATS): Not operation
• Remote keyless entry receiver communication status: No com-
munication
• ACC/ON indicator lamp: Not operation
BCS-14
< SYSTEM DESCRIPTION >
[WITH INTELLIGENT KEY SYSTEM]
SYSTEM
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-
mit wake up signals to BCM with CAN communication to convey the start of CAN communication.
Wake-up condition
Wake-up condition
• Receiving the sleep-ready signal (Not-ready) from any units
• Push-button ignition switch (push switch): OFF
→
ON
• Hazard switch: ON
• HI BEAM switch: OFF
→
ON, ON
→
OFF
• PASSING switch: OFF
→
ON, ON
→
OFF
• HEADLAMP 1 switch: OFF
→
ON, ON
→
OFF
• HEADLAMP 2 switch: OFF
→
ON, ON
→
OFF
• TAIL LAMP switch: OFF
→
ON
• FR FOG switch: OFF
→
ON, ON
→
OFF
• TURN RH: OFF
→
ON, ON
→
OFF
• TURN LH: OFF
→
ON, ON
→
OFF
• 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
• Back door switch: OFF
→
ON, ON
→
OFF
• Driver door request switch: OFF
→
ON
• Passenger door request switch: OFF
→
ON
• Back door request switch: OFF
→
ON
• Stop lamp switch: ON
• Door lock and unlock switch:
NEUTRAL
→
LOCK, NEUTRAL
→
UNLOCK
• Remote keyless entry receiver communication: Receiving
• Front door lock assembly (driver side) (unlock sensor):
OFF
→
ON, ON
→
OFF
BCS
DIAGNOSIS SYSTEM (BCM)
BCS-15
< SYSTEM DESCRIPTION >
[WITH INTELLIGENT KEY SYSTEM]
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DIAGNOSIS SYSTEM (BCM)
COMMON ITEM
COMMON ITEM : CONSULT-III Function (BCM - COMMON ITEM)
INFOID:0000000006014823
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
*: This item is displayed, but is not used.
FREEZE FRAME DATA (FFD)
The BCM records the following vehicle condition at the time a particular DTC is detected, and displays on
CONSULT-III.
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 Monitor
Monitors the reception status of CAN communication viewed from BCM. Refer to CONSULT-III opera-
tion instruction.
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 item
Diagnosis 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
×
×
×
Automatic air conditioner
AIR CONDITONER
×
×
• Intelligent Key system
• Engine start system
INTELLIGENT KEY
×
×
×
Combination switch
COMB SW
×
Body control system
BCM
×
NATS
IMMU
×
×
×
Interior room lamp battery saver
BATTERY SAVER
×
×
×
Back door
TRUNK
×
—
THEFT ALM*
×
×
×
—
RETAINED PWR*
×
Signal buffer system
SIGNAL BUFFER
×
×
BCS-16
< SYSTEM DESCRIPTION >
[WITH INTELLIGENT KEY SYSTEM]
DIAGNOSIS SYSTEM (BCM)
COMB SW
COMB SW : CONSULT-III Function (BCM - COMB SW)
INFOID:0000000006014834
DATA MONITOR
CONSULT screen item
Indication/Unit
Description
Vehicle Speed
km/h
Vehicle speed of the moment a particular DTC is detected
Odo/Trip Meter
km
Total mileage (Odometer value) of the moment a particular DTC is detected
Vehicle Condition
SLEEP>LOCK
Power position status of
the moment a particular
DTC is detected
While turning BCM status from low power consumption mode to
normal mode (Power supply position is “LOCK”)
SLEEP>OFF
While turning BCM status from low power consumption mode to
normal mode (Power supply position is “OFF”.)
LOCK>ACC
While turning power supply position from “LOCK” to “ACC”
ACC>ON
While turning power supply position from “ACC” to “IGN”
RUN>ACC
While turning power supply position from “RUN” to “ACC” (Vehicle
is stopping and selector lever is except P position.)
CRANK>RUN
While turning power supply position from “CRANKING” to “RUN”
(From cranking up the engine to run it)
RUN>URGENT
While turning power supply position from “RUN“ to “ACC” (Emer-
gency stop operation)
ACC>OFF
While turning power supply position from “ACC” to “OFF”
OFF>LOCK
While turning power supply position from “OFF” to “LOCK”
OFF>ACC
While turning power supply position from “OFF” to “ACC”
ON>CRANK
While turning power supply position from “IGN” to “CRANKING”
OFF>SLEEP
While turning BCM status from normal mode (Power supply posi-
tion is “OFF”.) to low power consumption mode
LOCK>SLEEP
While turning BCM status from normal mode (Power supply posi-
tion is “LOCK”.) to low power consumption mode
LOCK
Power supply position is “LOCK” (Ignition switch OFF with steer-
ing is locked.)
OFF
Power supply position is “OFF” (Ignition switch OFF with steering
is unlocked.)
ACC
Power supply position is “ACC” (Ignition switch ACC)
ON
Power supply position is “IGN” (Ignition switch ON with engine
stopped)
ENGINE RUN
Power supply position is “RUN” (Ignition switch ON with engine
running)
CRANKING
Power supply position is “CRANKING” (At engine cranking)
IGN Counter
0 - 39
The number of times that ignition switch is turned ON after DTC is detected
• The number is 0 when a malfunction is detected now.
• The number increases like 1
→
2
→
3...38
→
39 after returning to the normal condition
whenever ignition switch OFF
→
ON.
• The number is fixed to 39 until the self-diagnosis results are erased if it is over 39.
Monitor item [UNIT]
Description
FR WIPER HI
[Off/On]
Displays the status of the FR WIPER HI switch in combination switch judged by BCM with the combination
switch reading function.
FR WIPER LOW
[Off/On]
Displays the status of the FR WIPER LOW switch in combination switch judged by BCM with the combination
switch reading function.
FR WASHER SW
[Off/On]
Displays the status of the FR WASHER switch in combination switch judged by BCM with the combination
switch reading function.
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