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
.
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:
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
LAN-14, "How to Use CAN Communication Signal Chart"
for how to use CAN communication signal
chart.
NOTE:
• Refer to
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
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