Nissan Qashqai J11. Manual - part 1822

BCS-14

< SYSTEM DESCRIPTION >

SYSTEM

Combination switch circuit

Combination switch INPUT-OUTPUT system list

COMBINATION SWITCH READING FUNCTION

Description

• BCM reads the status of the combination switch at 10 ms interval

normally.
NOTE:
BCM reads the status of the combination switch at 60 ms interval
when BCM is controlled at low power consumption control mode.

• BCM operates as follows and judges the status of the combination switch.
- It operates the transistor on OUTPUT side in the following order: OUTPUT 5 

→

 4 

→

 3 

→

 2 

→

 1, and outputs

voltage waveform.

- The voltage waveform of OUTPUT corresponding to the formed circuit is input into the interface on INPUT

side if any (1 or more) switches are ON.

System

OUTPUT 1

OUTPUT 2

OUTPUT 3

OUTPUT 4

OUTPUT 5

INPUT 1

—

HI BEAM

PASSING

RR FOG

FR FOG

INPUT 2

WIP VOLUME 1

—

HEADLAMP

AUTO LIGHT

TAIL LAMP

INPUT 3

FR WASHER

RR WASHER

—

TURN LH

TURN RH

INPUT 4

FR WIPER LO

FR WIPER HI

FR WIPER INT/AUTO

—

LIGHT OFF

INPUT 5

WIP VOLUME 2

WIP VOLUME 3

RR WIPER INT

RR WIPER ON

—

JMMIA1754GB

JMMIA1637GB

BCS

SYSTEM

BCS-15

< SYSTEM DESCRIPTION >

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

- It reads this change of the voltage as the status signal of the combination switch.

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 OUTPUT 5 and INPUT 3 is formed when the TURN RH switch is turned ON.

• BCM detects the combination switch status signal “3E” when the signal of OUTPUT 5 is input to INPUT 3.
• BCM judges that the TURN RH switch is ON when the signal “3E” is detected.

Example 2: When some switches (TURN RH switch, FR WASHER switch) are turned ON

JMMIA1757GB

JMMIA1755GB

BCS-16

< SYSTEM DESCRIPTION >

SYSTEM

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

TURN RH switch and FR WASHER switch are turned ON.

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

input to INPUT 3.

• BCM judges that the TURN RH switch and FR WASHER switch are ON when the signal “3AE” is detected.

WIPER VOLUME DIAL POSITION

• BCM judges the WIP VOLUME 1 - 4 by the status of WIP VOLUME 1, 2 and 3 switches. (With auto light sys-

tem)

• BCM judges the WIP VOLUME 1 - 5 by the status of WIP VOLUME 1, 2 and 3 switches. (Without auto light

system)

NOTE:
For details of wiper volume dial position, refer to 

WW-10, "FRONT WIPER AND WASHER SYSTEM (WITH

LIGHT & RAIN SENSOR) : System Description"

 (with rain sensor) or 

WW-13, "FRONT WIPER AND

WASHER SYSTEM (WITHOUT LIGHT & RAIN SENSOR) : System Description"

 (without rain sensor).

SIGNAL BUFFER SYSTEM

JMMIA1756GB

Wiper volume

Switch status

WIP VOLUME 1

WIP VOLUME 2

WIP VOLUME 3

1

ON

ON

OFF

2

ON

OFF

OFF

3

OFF

OFF

OFF

4

OFF

OFF

ON

Wiper volume

Switch status

WIP VOLUME 1

WIP VOLUME 2

WIP VOLUME 3

1

ON

ON

OFF

2

ON

OFF

OFF

3

OFF

OFF

OFF

4

OFF

OFF

ON

5

OFF

ON

ON

BCS

SYSTEM

BCS-17

< SYSTEM DESCRIPTION >

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

SIGNAL BUFFER SYSTEM : System Description

INFOID:0000000010377991

SYSTEM DIAGRAM

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

JMMIA1758GB

Signal name

Input

Output

Description

Oil pressure switch signal

IPDM E/R (CAN)

Combination meter (CAN)

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

Ignition switch ON signal

Push-button ignition switch 
(Push switch) (with Intelligent 
Key system)

IPDM E/R (CAN)

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

Ignition switch (without Intelli-
gent Key system)

Inputs the ignition switch signal 
and transmits the ignition switch 
status judged by BCM via CAN 
communication.

Door switch signal

Any door switch

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

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

Stop lamp switch signal

Stop lamp switch

TCM (CAN)

Inputs the stop lamp switch 1 
signal and stop lamp switch 2 
signal, and transmits it via CAN 
communication.