NISSAN NOTE 2016 Service Repair Manual

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PRECAUTIONSLAN-23
< PRECAUTION > [CAN]
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• Bypass connection is never allowed at the repaired area.
NOTE:
Bypass connection may cause CAN communication error. The
spliced wire becomes separated and t he characteristics of twisted
line are lost.
• Replace the applicable harness as an assembly if error is detected on the shield lines of CAN communica- tion line.
SKIB8767E
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< SYSTEM DESCRIPTION >[CAN]
COMPONENT PARTS
SYSTEM DESCRIPTION
COMPONENT PARTS
Component Parts LocationINFOID:0000000012433345
Around view monitor control unit Air bag diagnosis sensor unit
Steering angle sensor
Combination meter ABS actuator and electric unit (con-
trol unit) AV control unit
EPS control unit Data link connectorTCM
IPDM E/R ECM BCM
ALMIA0644ZZ
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SYSTEMLAN-25
< SYSTEM DESCRIPTION > [CAN]
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SYSTEM
CAN COMMUNICATION SYSTEM
CAN COMMUNICATION SYSTEM : System DescriptionINFOID:0000000012433346
SYSTEM DIAGRAM
DESCRIPTION
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic 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.
CAN Communication Signal Generation
• Termination circuits (resistors) are connected ac ross the CAN communication system. When transmitting a
CAN communication signal, each control unit passes a cu rrent to the CAN-H line and the current returns to
the CAN-L line.
JSMIA1430GB
JSMIA0450GB
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< SYSTEM DESCRIPTION >[CAN]
SYSTEM
• The current flows separately into the termination circuits connected
across the CAN communication system and the termination cir-
cuits drop voltage to generate a potential difference between the
CAN-H line and the CAN-L line.
NOTE:
A signal with no current passage is called “Recessive” and one
with current passage is called “Dominant”.
• The system produces digital signals for signal communications, by using the potential difference.
The Construction of CAN Communication Signal (Message)
CAN Communication Line
JSMIA0543GB
JSMIA0544ZZ
JSMIA0545ZZ
No. Message name Description
1 Start of frame (1 bit) Start of message.
2 Arbitration of field (11 bit) Priorities of message-sending are shown when there is a pos-
sibility that multiple messages are sent at the same time.
3 Control field (6 bit) Signal quantity in data field is shown.
4 Data field (0-64 bit) Actual signal is shown.
5 CRC field (16 bit) • The transmitting control unit calculates sending data in ad-
vance and writes the calculated value in a message.
• The receiving control unit calculates received data and judg-
es that the data reception is normal when the calculated val-
ue is the same as the value written in the sent data.
6 ACK field (2 bit) The completion of normal reception is sent to the transmitting
unit.
7 End of frame (7 bit) End of message.
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SYSTEMLAN-27
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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
JSMIA0576GB
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< 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
Signal Chart".
CAN COMMUNICATION SYSTEM : CAN Communication Control CircuitINFOID:0000000012433347
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.
Revision: August 2015
2016 Versa Note

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SYSTEMLAN-29
< SYSTEM DESCRIPTION > [CAN]
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*: These are the only control units wired with both ends of CAN communication system.
CAN COMMUNICATION SYSTEM : CAN
System Specification ChartINFOID:0000000012433348
Determine CAN system type from the following specification chart.
NOTE:
Refer to LAN-16, "
Trouble Diagnosis Flow Chart" 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 Hatch back
Axle 2WD
Engine HR16DE
Transmission M/T CVT
Brake control VDC
Around view monitor system ××
Navigation system ×××
CAN system type 501502 503505 504
CAN communication control unit
ECM ×××××
ABS actuator and electric unit (control unit) ×××××
IPDM E/R ×××××
TCM ×××
Around view monitor control unit ××
Air bag diagnosis sensor unit ×××××
AV c o n t r o l u n i t ×××
Data link connector ×××××
EPS control unit ×××××
Combination meter ×××××
Steering angle sensor ×××××
BCM ×××××
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LAN-30
< SYSTEM DESCRIPTION >[CAN]
SYSTEM
CAN COMMUNICATION SYSTEM : CA N Communication Signal Chart
INFOID:0000000012433349
Refer to LAN-15, "How to Use CAN Communication Signal Chart" for how to use CAN communication signal
chart.
NOTE:
• Refer to LAN-21, "
Abbreviation List" for the abbreviations of the connecting units.
• The air bag diagnosis sensor unit and AV control unit uses CAN communication only for communicating with
the diagnostic tool (not with other connected control units).
T: Transmit R: Receive
NAVI switches Side camera LH
With navigation system With around view monitor system
ALMIA0821ZZ
Signal nameECM
ABS
IPDM-E TCM
AV M EPS
M&A
STRG BCM
Accelerator pedal position signal T RR
A/C compressor request signal TR
Closed throttle position signal TR
Cooling fan speed request signal TR
ECO pedal guide signal TR
Engine and CVT integrated control signal TR
RT
Engine coolant temperature signal TR R R
Engine speed signal T RR R
Engine status signal T RR R
Fuel filler cap warning display signal TR
N idle instruction signal TR
RT
Malfunctioning indicator lamp signal TR
RT
Oil pressure warning lamp signal TR
Power generation command value signal TR
ABS warning lamp signal TR
VDC warning lamp signal TR
VDC OFF indicator lamp signal TR
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< SYSTEM DESCRIPTION > [CAN]
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Vehicle speed signal (ABS)
TR R R R R
Brake warning lamp signal TR
Detention switch signal TR
Front wiper stop position signal TR
High beam status signal RT
Ignition switch ON signal TR
RT
Interlock/PNP switch signal TR
RT
Low beam status signal RT
Push-button ignition switch status signal TR
OD OFF indicator signal RT
RT
Starter control relay signal TR
RT
Starter relay status signal TR
RT
Sleep-ready signal TR
TR
Wake up signal TR
Input shaft revolution signal RT
O/D OFF indicator signal TR
Output shaft revolution signal RT
Shift position signal RT RR
Target gear ratio signal RT
EPS warning lamp signal TR
Overdrive control switch signal RT
Fuel filler cap warning reset signal RT
O/D OFF switch signal RT
Odometer signal TR
Vehicle speed signal (Meter) RR TR
Wake up signal TR
Steering angle sensor signal RR T
A/C ON signal R T
Blower fan ON signal R T
Buzzer output signal RT
Dimmer signal RT
Door switch signal RRT
Engine start operation indicator lamp signal RT
Front wiper request signal RT
High beam request signal RRT
Key warning lamp signal RT
Low beam request signal RRT
Signal name
ECM
ABS
IPDM-E
TCMAV M
EPS
M&A
STRG
BCM
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LAN-32
< SYSTEM DESCRIPTION >[CAN]
SYSTEM
Oil pressure switch signal
RT
Position light request signal R R RRT
Shift P warning lamp signal RT
Sleep wake up signal RRT
Stop lamp switch signal RT
Turn indicator signal RT
Signal name
ECM
ABS
IPDM-E TCM
AV M EPS
M&A
STRG BCM
Revision: August 2015 2016 Versa Note

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