Nissan Versa Sedan. Manual - part 537

LAN-26

< SYSTEM DESCRIPTION >

[CAN]

SYSTEM

The CAN communication line is a twisted pair wire consisting of

strands of CAN-H (1) and CAN-L (2) and has noise immunity.

NOTE:

The CAN communication system has the characteristics of noise-resistant because this system produces dig-

ital signals by using the potential difference between the CAN-H line and the CAN-L line and has the twisted

pair wire structure.

Since the CAN-H line and the CAN-L line are always adjacent to

each other, the same degree of noise occurs, respectively, when a

noise (1) occurs. Although the noise changes the voltage, the poten-

tial difference (2) between the CAN-H line and the CAN-L line is

insensitive to noise. Therefore, noise-resistant signals can be

obtained.

CAN Signal Communications

Each control unit of the CAN communication system transmits signals through the CAN communication con-

trol circuit included in the control unit and receives only necessary signals from each control unit to perform

various kinds of control.

• Example: Transmitted signals

JSMIA0382ZZ

JSMIA0383ZZ

JSMIA0576GB

LAN

SYSTEM

LAN-27

< SYSTEM DESCRIPTION >

[CAN]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

• Example: Received signals

NOTE:

The above signal names and signal communications are provided for reference purposes. For CAN communi-

cations signals of this vehicle, refer to 

LAN-29, "CAN COMMUNICATION SYSTEM : CAN Communication

Signal Chart"

.

CAN COMMUNICATION SYSTEM : CAN Communication Control Circuit

INFOID:0000000009269352

CAN communication control circuit is incorporated into the control unit and transmits/receives CAN communi-

cation signals.

JSMIA0577GB

JSMIA0453GB

Component

System description

CAN controller

It controls CAN communication signal transmission and reception, error detection, etc.

Transceiver IC

It converts digital signal into CAN communication signal, and CAN communication signal into digital 
signal.

LAN-28

< SYSTEM DESCRIPTION >

[CAN]

SYSTEM

*: These are the only control units wired with both ends of CAN communication system.

CAN COMMUNICATION SYSTEM : CAN System Specification Chart

INFOID:0000000009269353

Determine CAN system type from the following specification chart.

NOTE:

Refer to 

LAN-15, "Trouble Diagnosis Procedure"

 for how to use CAN system specification chart.

×: Applicable

VEHICLE EQUIPMENT IDENTIFICATION INFORMATION

NOTE:

Check CAN system type from the vehicle shape and equipment.

Noise filter

It eliminates noise of CAN communication signal.

Termination circuit

*

(Resistance of approx. 120 

Ω)

Generates a potential difference between CAN-H and CAN-L.

Component

System description

Body type

Sedan

Axle

2WD

Engine

HR16DE

Transmission

M/T

A/T

CVT

Brake control

VDC

Navigation system

×

CAN system type

1

2

3

4

CAN communication unit

ECM

×

×

×

×

ABS actuator and electric unit (control unit)

×

×

×

×

IPDM E/R

×

×

×

×

TCM

×

×

×

Air bag diagnosis sensor unit

×

×

×

×

AV control unit

×

Data link connector

×

×

×

×

EPS control unit

×

×

×

×

Combination meter

×

×

×

×

Steering angle sensor

×

×

×

×

BCM

×

×

×

×

ALMIA0645ZZ

LAN

SYSTEM

LAN-29

< SYSTEM DESCRIPTION >

[CAN]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

CAN COMMUNICATION SYSTEM : CAN Communication Signal Chart

INFOID:0000000009269354

Refer to 

LAN-14, "How to Use CAN Communication Signal Chart"

 for how to use CAN communication signal

chart.

NOTE:

• Refer to 

LAN-20, "Abbreviation List"

 for the abbreviations of the connecting units. 

• The AV control unit uses CAN communication only for communicating with the diagnostic tool (not with other

connected control units).

T: Transmit R: Receive

1.

NAVI switches

A.

With navigation system

Signal name

ECM

ABS

IPDM

-E

TCM

EPS

M&A

STRG

BCM

A/C compressor request signal

T

R

Accelerator pedal position signal

T

R

ASCD status signal

T

R

Closed throttle position signal

T

R

Cooling fan speed request signal

T

R

Engine and CVT integrated control signal

T

R

R

T

Engine coolant temperature signal

T

R

Engine speed signal

T

R

R

Engine status signal

T

R

R

R

R

Fuel consumption monitor signal

T

R

Fuel filler cap warning display signal

T

R

Malfunctioning indicator lamp signal

T

R

R

T

Power generation command value signal

*

T

R

ABS malfunction signal

T

R

ABS operation signal

T

R

ABS warning lamp signal

T

R

Brake warning lamp signal

T

R

Vehicle speed signal (ABS)

T

R

R

R

R

Detention switch signal

T

R

Front wiper stop position signal

T

R

High beam status signal

R

T

Ignition switch ON signal

T

R

R

T

Low beam status signal

R

T

Oil pressure switch signal

T

R

R

T

Rear window defogger control signal

R

T

R

T

Sleep-ready signal

T

R

T

R