Nissan Juke F15. Instruction — part 922
LAN
COMPONENT PARTS
LAN-25
< SYSTEM DESCRIPTION >
[CAN]
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SYSTEM DESCRIPTION
COMPONENT PARTS
Component Parts Location
INFOID:0000000012200506
1.
Multi display unit
2.
A/C auto amp.
3.
Around view monitor control unit
4.
ABS actuator and electric unit (con-
trol unit)
5.
NAVI control unit
6.
ECM
7.
IPDM E/R
8.
TCM
9.
EPS control unit
10. Combination meter
11. BCM
12. Data link connector
13. Steering angle sensor
14. AWD control module
15. Air bag diagnosis sensor unit
JSMIA2078ZZ
LAN-26
< SYSTEM DESCRIPTION >
[CAN]
SYSTEM
SYSTEM
CAN COMMUNICATION SYSTEM
CAN COMMUNICATION SYSTEM : System Diagram
INFOID:0000000012200507
CAN COMMUNICATION SYSTEM : System Description
INFOID:0000000012200508
Description
• CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle
multiplex communication line with high data communication speed and excellent error detection ability. Many
electronic control units are equipped onto a vehicle, and each control unit shares information and links with
other control units during operation (not independent). In CAN communication, control units are connected
with 2 communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with
less wiring. Each control unit transmits/receives data but selectively reads required data only.
• Termination circuits (resistors) are connected across the CAN communication system. When transmitting a
CAN communication signal, each control unit passes a current to the CAN-H line and the current returns to
the CAN-L line. The current flows separately into the termination circuits connected across the CAN commu-
nication system and the termination circuits drop voltage to generate a potential difference between the
CAN-H line and the CAN-L line. The system produces digital signals for signal communications, by using the
potential difference.
CAN Communication Line
JSMIA2079GB
JSMIA0450GB
LAN
SYSTEM
LAN-27
< SYSTEM DESCRIPTION >
[CAN]
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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
JSMIA0584GB
LAN-28
< SYSTEM DESCRIPTION >
[CAN]
SYSTEM
• 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-30, "CAN COMMUNICATION SYSTEM : CAN Communication
.
CAN COMMUNICATION SYSTEM : CAN Communication Control Circuit
INFOID:0000000012200509
CAN communication control circuit is incorporated into the control unit and transmits/receives CAN communi-
cation signals.
JSMIA0585GB
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.
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