Nissan Rogue (T33) 2021-Present Service Manual: Can Fundamental :: Description
Outline
How to Use This Section
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“CAN FUNDAMENTAL” of LAN Section describes the basic knowledge of the CAN communication system and the method of trouble diagnosis.
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For information peculiar to a Nissan Ariya vehicle and inspection procedure, refer to “CAN”.
System (can Communication)
System Description
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-Nissan Ariya vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a Nissan Ariya 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.
System (diag on Can)
System Description
SYSTEM DIAGRAM

| Name | Harness | Description |
|---|---|---|
| DDL1 |
Tx Rx |
For communications with the diagnostic tool. (CAN-H and CAN-L are used for controlling) |
| DDL2 | K-LINE | For communications with the diagnostic tool. (CAN-H and CAN-L are used for controlling) |
| Diag on CAN |
CAN-H CAN-L |
For communications with the diagnostic tool. (CAN-H and CAN-L are also used for control and diagnoses.) |
DESCRIPTION
“Diag on CAN” is a diagnosis method which uses the CAN communication line for the communication between the control unit and the diagnostic tool.
Other materials:
Removal and Installation. Intelligent Key Battery
Removal and Installation
Release the lock knob at the back of the Intelligent Key and remove the mechanical key.
Using a suitable tool, release outer key bracket (A) in direction shown.
CAUTION:
Never touch the circuit board or battery terminal.
The Intelligant Key is water-re ...
Power Supply and Ground Circuit
Tcu
Diagnosis Procedure
CHECK FUSE
Check if the fuse is burned out.
Power supply Fuse No.
BAT
17
Is the check result normal?
YES>>
GO TO 2.
NO>>
Replace the fuse after repairing the applicable circuit.
CHECK BATTERY VOLTAGE
Check the voltage between the TCU ha ...
U0120 Can Communication
DTC Description
DTC DETECTION LOGIC DTC
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
U0120
00
STR/GEN C/M
(Lost Communication With Starter / Generator Control Module)
Diagnosis condition
Ignition switch ON
Signal (terminal)
CAN communic ...
