Nissan Sentra. Manual - part 453

SYSTEM

EXL-15

< SYSTEM DESCRIPTION >

C

D

E

F

G

H

I

J

K

M

A

B

EXL

N

O

P

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

WW-8, "System Description"

.

COMBINATION SWITCH READING SYSTEM : System Diagram (Without Intelligent 
Key System)

INFOID:0000000010295732

COMBINATION SWITCH READING SYSTEM : System Description (Without Intelli-
gent Key System)

INFOID:0000000010295733

OUTLINE

• BCM reads the status of the combination switch (light, turn signal, wiper and washer) and recognizes the

status of each switch.

• BCM has a combination of 5 output terminals (OUTPUT 1 - 5) and 5 input terminals (INPUT 1 - 5). It reads a

maximum of 20 switch states.

COMBINATION SWITCH MATRIX

Combination switch circuit

6

OFF

ON

ON

7

OFF

ON

OFF

Wiper intermittent

dial position

Switch status

INT VOLUME 1

INT VOLUME 2

INT VOLUME 3

AWMIA1224GB

AWMIA1221GB

EXL-16

< SYSTEM DESCRIPTION >

SYSTEM

Combination switch INPUT-OUTPUT system list

COMBINATION SWITCH READING FUNCTION

Description

• BCM reads the status of the combination switch at 10 ms intervals normally.

NOTE:

BCM reads the status of the combination switch at 60 ms intervals 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 1 

→ 2 → 3 → 4 → 5, 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.

- 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”.

System

INPUT 1

INPUT 2

INPUT 3

INPUT 4

INPUT 5

OUTPUT 1

—

FR WASHER

FR WIPER LOW

TURN LH

TURN RH

OUTPUT 2

FR WIPER HI

—

FR WIPER INT

PASSING

HEADLAMP 1

OUTPUT 3

INT VOLUME 1

—

—

HEADLAMP 2

HI BEAM

OUTPUT 4

—

INT VOLUME 3

—

—

TAIL LAMP

OUTPUT 5

INT VOLUME 2

—

—

FR FOG

—

JPMIA0609GB

JMMIA0326GB

SYSTEM

EXL-17

< SYSTEM DESCRIPTION >

C

D

E

F

G

H

I

J

K

M

A

B

EXL

N

O

P

Example 1: When a switch (TAIL LAMP) is turned ON

• The circuit between OUTPUT 4 and INPUT 5 is formed when the TAIL LAMP switch is turned ON.

• BCM detects the combination switch status signal “5D” when the signal of OUTPUT 4 is input to INPUT 5.

• BCM judges that the TAIL LAMP switch is ON when the signal “5D” is detected.

Example 2: When some switches (TURN RH, TAIL LAMP) are turned ON

• 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.

AWMIA1222GB

AWMIA1223GB

EXL-18

< SYSTEM DESCRIPTION >

DIAGNOSIS SYSTEM (BCM) (WITH INTELLIGENT KEY SYSTEM)

DIAGNOSIS SYSTEM (BCM) (WITH INTELLIGENT KEY SYSTEM)

COMMON ITEM
COMMON ITEM : CONSULT Function (BCM - COMMON ITEM)

INFOID:0000000010309869

APPLICATION ITEM

CONSULT performs the following functions via CAN communication with BCM.

SYSTEM APPLICATION

BCM can perform the following functions.

Direct Diagnostic Mode

Description

ECU identification

The BCM part number is displayed.

Self Diagnostic Result

The BCM self diagnostic results are displayed.

Data Monitor

The BCM input/output data is displayed in real time.

Active Test

The BCM activates outputs to test components.

Work support

The settings for BCM functions can be changed.

Configuration

• The vehicle specification can be read and saved.
• The vehicle specification can be written when replacing BCM.

CAN DIAG SUPPORT MNTR

The result of transmit/receive diagnosis of CAN communication is displayed.

System

Sub System

Direct Diagnostic Mode

ECU id

en

tif

ica

tion

Se

lf Di

ag

no

st

ic

 Res

u

lt

Dat

a

 M

on

ito

r

Acti

ve

 T

est

W

o

rk

 su

pp

ort

Co

nf

ig

ur

at

io

n

CAN DIAG SUP

P

OR

T MNTR

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

×

×

×

Air conditioner

AIR CONDITIONER

×

Intelligent Key system

INTELLIGENT KEY

×

×

×

×

Combination switch

COMB SW

×

BCM

BCM

×

×

×

×

×

Immobilizer

IMMU

×

×

×

×

Interior room lamp battery saver

BATTERY SAVER

×

×

×

Trunk open

TRUNK

×

Vehicle security system

THEFT ALM

×

×

×

RAP system

RETAINED PWR

×

Signal buffer system

SIGNAL BUFFER

×

TPMS

AIR PRESSURE MONITOR

×

×

×

×