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:
Lib 12v Branch Line Circuit
Diagnosis Procedure
CHECK CONNECTOR
Turn the ignition switch OFF.
Disconnect the battery cable from the negative terminal.
Check the following terminals and connectors for damage, bend and loose connection (unit side and connector side).
12V sub battery (lithium ion battery)
...
Système de contrôle de tension variable
MISE EN GARDE
Ne branchez jamais des accessoires électriques directement à la borne de la batterie. Une telle connexion contourne le système de contrôle de tension variable du Nissan Rogue et peut empêcher une recharge correcte de la batterie.
Utilisez les accessoires électriques u ...
U2143-57 Vcm/hpcm
Without Propilot Assist 2.1
DTC Description
DTC DETECTION LOGIC DTC
CONSULT screen terms
(Trouble diagnosis content) DTC detection condition
U2143
57
CAN communication error (VCM/HPCM)
Diagnosis condition
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Signal (terminal)
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Threshold
MAC communication er ...
