Nissan March K13. Manual - part 23

BCS

SYSTEM

BCS-65

< SYSTEM DESCRIPTION >

[WITHOUT INTELLIGENT KEY SYSTEM]

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• The circuits between OUTPUT 1 and INPUT 5 and between OUTPUT 4 and INPUT 5 are formed when the

TURN RH switch and TAIL LAMP switch are turned ON.

• BCM detects the combination switch status signal “5AD” when the signals of OUTPUT 1 and OUTPUT 4 are

input to INPUT 5.

• BCM judges that the TURN RH switch and TAIL LAMP switch are ON when the signal “5AD” is detected.

WIPER INTERMITTENT DIAL POSITION

BCM judges the wiper intermittent dial 1 - 7 by the status of INT VOLUME 1, 2 and 3 switches.

NOTE:

For details of wiper intermittent dial position, refer to 

WW-6, "FRONT WIPER AND WASHER SYSTEM : System Description"

.

SIGNAL BUFFER SYSTEM

JMMIA0395GB

Wiper intermittent

dial position

Switch status

INT VOLUME 1

INT VOLUME 2

INT VOLUME 3

1

ON

ON

ON

2

ON

ON

OFF

3

ON

OFF

OFF

4

OFF

OFF

OFF

5

OFF

OFF

ON

6

OFF

ON

ON

7

OFF

ON

OFF

BCS-66

< SYSTEM DESCRIPTION >

[WITHOUT INTELLIGENT KEY SYSTEM]

SYSTEM

SIGNAL BUFFER SYSTEM : System Diagram

INFOID:0000000006014874

SIGNAL BUFFER SYSTEM : System Description

INFOID:0000000006014875

OUTLINE

BCM has the signal transmission function that outputs/transmits each input/received signal to each unit.

SIGNAL TRANSMISSION FUNCTION LIST

POWER CONSUMPTION CONTROL SYSTEM

POWER CONSUMPTION CONTROL SYSTEM : System Diagram

INFOID:0000000006014876

JMMIA0397GB

Signal name

Input

Output

Description

Ignition switch ON signal

Ignition switch

IPDM E/R (CAN)

Inputs the ignition switch signal 
and transmits it with CAN com-
munication.

Door switch signal

Any door switch

• Combination meter (CAN)
• IPDM E/R (CAN)

Inputs the door switch signal 
and transmits it with CAN com-
munication.

Blower fan on signal

• A/C auto amp.
• A/C  control
• Heater control

ECM (CAN)

Input blower fan switch signal, 
and transmit the blower fan on 
signal via CAN communication.

A/C on signal

• A/C auto amp.
• Thermo control amp.

ECM (CAN)

Input A/C switch signal, and 
transmit the A/C on signal via 
CAN communication.

Oil pressure switch signal

IPDM E/R (CAN)

Combination meter (CAN)

Transmits the received oil pres-
sure switch signal with CAN 
communication.

JPMIA0731GB

BCS

SYSTEM

BCS-67

< SYSTEM DESCRIPTION >

[WITHOUT INTELLIGENT KEY SYSTEM]

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POWER CONSUMPTION CONTROL SYSTEM : System Description

INFOID:0000000006014877

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

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.

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
• Stop lamp switch: OFF
• Turn signal indicator lamp: Not operation
• Exterior lamp: OFF
• Door lock status: No change
• CONSULT-III communication status: Not communication
• Door switch status: No change
• Rear window defogger: OFF
• Driver door lock status: No change
• Key switch 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

BCS-68

< SYSTEM DESCRIPTION >

[WITHOUT INTELLIGENT KEY SYSTEM]

SYSTEM

Wake-up condition

Wake-up condition

• Receiving the sleep-ready signal (Not-ready) from any units
• 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

• Stop lamp switch: ON
• Door lock and unlock switch:

NEUTRAL 

→

 LOCK, NEUTRAL 

→

 UNLOCK

• Door key cylinder switch (driver side):

NEUTRAL 

→

 LOCK, NEUTRAL 

→

 UNLOCK

• Remote keyless entry receiver communication: Receiving