Nissan Murano Z51. Manual - part 261

 

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Nissan Murano Z51. Manual - part 261

 

 

BCS

COMBINATION SWITCH READING SYSTEM

BCS-11

< SYSTEM DESCRIPTION >

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Operation Example

In the following operation example, the combination of the status signals of the combination switch is replaced
as follows: INPUT 1 - 5 to “1 - 5” and OUTPUT 1 - 5 to “A - E”.

Example 1: When a switch (TURN RH switch) is turned ON

• The circuit between INPUT 1 and OUTPUT 5 is formed when the TURN RH switch is turned ON.

• BCM detects the combination switch status signal “1E” when the signal of OUTPUT 5 is input to INPUT 1.
• BCM judges that the TURN RH switch is ON when the signal “1E” is detected.

Example 2: When some switches (turn RH switch, front wiper LO switch) are turned ON

• The circuits between INPUT 1 and OUTPUT 5 and between INPUT 1 and OUTPUT 3 are formed when the

TURN RH switch and FR WIPER LOW switch are turned ON.

• BCM detects the combination switch status signal “1CE” when the signals of OUTPUT 3 and OUTPUT 5 are

input to INPUT 1.

• BCM judges that the TURN RH switch and FR WIPER LOW switch are ON when the signal “1CE” is

detected.

WIPER VOLUME DIAL POSITION

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

JMMIA0294GB

JMMIA0295GB

Wiper volume dial position

Switch status  

WIP VOLUME 1

WIP VOLUME 2

WIP VOLUME 3

1

ON

ON

ON

2

ON

ON

OFF

BCS-12

< SYSTEM DESCRIPTION >

COMBINATION SWITCH READING SYSTEM

NOTE:

For details of wiper volume dial position, refer to 

WW-5, "WITH RAIN SENSOR : System Description"

 (with rain sensor), 

WW-9, "WITH-

OUT RAIN SENSOR : System Description"

 (without rain sensor).

3

ON

OFF

OFF

4

OFF

OFF

OFF

5

OFF

OFF

ON

6

OFF

ON

ON

7

OFF

ON

OFF

Wiper volume dial position

Switch status  

WIP VOLUME 1

WIP VOLUME 2

WIP VOLUME 3

BCS

SIGNAL BUFFER SYSTEM

BCS-13

< SYSTEM DESCRIPTION >

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SIGNAL BUFFER SYSTEM

System Diagram

INFOID:0000000005681336

System Description

INFOID:0000000005681337

OUTLINE

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

Signal transmission function list

JMMIA0298GB

Signal name

Input

Output

Description

• Ignition switch ON signal
• Ignition switch signal

Push-button ignition switch 
(Push switch)

• IPDM E/R (CAN)
• Driver seat control unit (CAN)
• Automatic back door control 

unit (CAN)

Inputs the push-button ignition 
switch (push switch) signal and 
transmits the ignition switch sta-
tus judged with BCM via CAN 
communication.

Door switch signal

Any door switch

• Combination meter (CAN)
• IPDM E/R (CAN)
• Driver seat control unit (CAN)

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

Oil pressure switch signal

IPDM E/R (CAN)

Combination meter (CAN)

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

Stop lamp switch signal

• Stop lamp switch
• ICC brake hold relay (With 

ICC)

TCM (CAN)

Inputs the stop lamp switch 1 
signal, and stop lamp switch 2 
signal or ICC brake hold relay 
(with ICC) signal, and transmits 
it via CAN communication.

Interlock/PNP switch signal

TCM

IPDM E/R (CAN)

Inputs the selector lever P/N po-
sition signal, and transmits the 
interlock/PNP switch signal via 
CAN communication.

BCS-14

< SYSTEM DESCRIPTION >

POWER CONSUMPTION CONTROL SYSTEM

POWER CONSUMPTION CONTROL SYSTEM

System Diagram

INFOID:0000000005518272

System Description

INFOID:0000000005518273

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, combination meter, driver seat control unit and automatic back door control
unit) 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.

JPMIA0906GB

 

 

 

 

 

 

 

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