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• The current flows separately into the termination circuits connected
across the CAN communication system and the termination cir-
cuits drop voltage to NISSAN TEANA 2014 Service Manual
LAN-28
< 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](/manual-img/5/57390/w960_57390-2976.png)
LAN-28
< 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 COMM UNICATION 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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B
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N
The CAN communication line is a twisted pair wire consisting of
strands of CAN-H and CAN-L and has noise immunity.
NISSAN TEANA 2014 Service Manual
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< SYSTEM DESCRIPTION > [CAN]
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The CAN communication line is a twisted pair wire consisting of
strands of CAN-H and CAN-L and has noise immunity.](/manual-img/5/57390/w960_57390-2977.png)
LAN
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< SYSTEM DESCRIPTION > [CAN]
C
D E
F
G H
I
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B
A
O P
N
The CAN communication line is a twisted pair wire consisting of
strands of CAN-H and CAN-L 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 occurs. Although the noise changes the voltage, the poten-
tial difference 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-32, "CAN COMMUNICATION SYSTEM : CAN Communication
Signal Chart".
CAN COMMUNICATION SYSTEM : CAN Communication Control CircuitINFOID:0000000009461411
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.
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B
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*: These are the only control units wired with both ends of CAN communication system.
CAN COMMUNICATION SYSTEM : CAN
Sys NISSAN TEANA 2014 Service Manual
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< 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
Sys](/manual-img/5/57390/w960_57390-2979.png)
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< 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:0000000009461412
Determine CAN system type from the following specification chart.
NOTE:
Refer to LAN-18, "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 QR25DE VQ35DE
Transmission CVT
Brake control VDC
Driver assistance system ××
Navigation system ×× ××
Automatic air conditioner ××× ×××
CAN system type 12345678 CAN communication unit
ECM ××××××××
ABS actuator and electric unit (control unit) ××××××××
Power steering control module ××××××××
IPDM E/R ××××××××
TCM ××××××××
Data link connector ××××××××
Combination meter ××××××××
Steering angle sensor ××××××××
AV control unit ×× ××
ITS control unit ××
A/C auto amp. ××× ×××
BCM ××××××××
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< SYSTEM DESCRIPTION >[CAN]
SYSTEM
CAN COMMUNICATION SYSTEM : CA N Communication Signal Chart
INFOID:0000000009461413
Refer to LAN-17, "How to Use CAN Communication Signal Chart" for how to use CAN communication signal
chart.
NOTE:
Refer to LAN-23, "Abbreviation List"
for the abbreviations of the connecting units.
T: Transmit R: Receive
Warning systems switch 7 inch color display NAVI switches
Automatic temperature control dial
With driver assistance system With Navigation system With auto A/C
AWMIA1453ZZ
Signal nameECM
EPS
IPDM-E TCM
M&A
STRG AV
AV M
HVAC ABS
BCM
A/C compressor request signal T R R
Accelerator pedal position signal T R R R
ASCD operation signal T R
ASCD status signal T R
Closed throttle position signal T R
Cooling fan speed request signal T R R
Engine coolant temperature signal T R R R R R
Engine and CVT integrated control
signal TR
RT
Engine speed signal T RR RRRR
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Engine status signal T R R R R
Fuel consumption monitor signal T R R
Fuel filler cap warning display signal T R
Malfunc NISSAN TEANA 2014 Service Manual
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Engine status signal T R R R R
Fuel consumption monitor signal T R R
Fuel filler cap warning display signal T R
Malfunc](/manual-img/5/57390/w960_57390-2981.png)
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Engine status signal T R R R R
Fuel consumption monitor signal T R R
Fuel filler cap warning display signal T R
Malfunctioning indicator lamp signal TR
RT
Oil pressure warning lamp signal T R
Power generation command value
signal TR
Target throttle position signal T R
Wide open throttle position signal T R
EPS operation signal R T
Hydraulic pump electric power steer-
ing warning lamp signal TR
Detention switch signal T R R
Front wiper stop position signal T R
High beam status signal R T
Hood switch signal T R
Interlock/PNP switch signal RT
TR R
Low beam status signal R T
Oil pressure switch signal RT
TR R
Push-button ignition switch status
signal TR
Rear window defogger control signal R T
Sleep ready signal T R
Starter relay status signal T R
Steering lock unit status signal T R
Steering lock relay signal RT
TR
Current gear position signal T R R
CVT position indicator signal T R R
Input shaft revolution signal R T R R
Manual mode indicator signal T R R
N range signal T R
Output shaft revolution signal R T R R
O/D OFF indicator signal
*1TR R
P range signal T R R
Shift position signal T R R
Brake fluid level signal T R
Distance to empty signal T R
Fuel filler cap warning reset signal R T
Fuel level low warning signal T R
Fuel level sensor signal R T Signal name
ECM
EPS
IPDM-E TCM
M&A
STRG AV
AV M
HVAC ABS
BCM
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< SYSTEM DESCRIPTION >[CAN]
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Paddle shift down signal*2
RT
Paddle shift up signal
*2RT
Manual mode signal
*2RT
Market information signal T R R
Not manual mode signal
*2RT
Overdrive cont NISSAN TEANA 2014 Service Manual
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< SYSTEM DESCRIPTION >[CAN]
SYSTEM
Paddle shift down signal*2
RT
Paddle shift up signal
*2RT
Manual mode signal
*2RT
Market information signal T R R
Not manual mode signal
*2RT
Overdrive cont](/manual-img/5/57390/w960_57390-2982.png)
LAN-34
< SYSTEM DESCRIPTION >[CAN]
SYSTEM
Paddle shift down signal*2
RT
Paddle shift up signal
*2RT
Manual mode signal
*2RT
Market information signal T R R
Not manual mode signal
*2RT
Overdrive control switch signal
*1RT
Parking brake switch signal T R R R
Seat belt buckle switch signal T R
Vehicle speed signal RRRR T R R R
RRRRRR TR
Steering angle sensor signal R T R R
Buzzer output signal RT
RT
Meter display signal R T
A/C switch signal R T
*3T*4
Ambient sensor signal*3RT
Blower fan motor switch signal R T
*3T*4
ABS operation signal R T
ABS warning lamp signal R T
Brake warning lamp signal R T
SLIP indicator lamp signal R T
TCS operation signal R T
VDC OFF indicator lamp signal R T
VDC operation signal R T
Yaw rate signal RT
Day time running light request signal R R R T
Door switch signal R R R R T
Front fog light request signal R R R R T
Front wiper request signal R R T
High beam request signal R R R R T
Horn reminder signal R T
Ignition switch ON signal R T
Key warning signal R T
Low beam request signal R R R R T
Meter TPMS display signal R T
Position light request signal R R R R T
Rear window defogger switch signal R R T
Sleep wake up signal R R T
Starter control relay signal R T
Theft warning horn request signal R T
Tire pressure data signal R R T Signal name
ECM
EPS
IPDM-E TCM
M&A
STRG AV
AV M
HVAC ABS
BCM
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< SYSTEM DESCRIPTION > [CAN]
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*1: QR25DE models
*2: VQ35DE models
*3: With automatic air conditioning system
*4: With manual air conditioning system
NOTE:
CAN data of the air bag diagnosis sensor unit is not used by usual service work, thus it is omitted.
Trunk switch signal R R R T
Turn indicator signal R R R T Signal name
ECM
EPS
IPDM-E TCM
M&A
STRG AV
AV M
HVAC ABS
BCM
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