Nissan Versa (N17): System

Nissan Versa 2nd generation (N17) Service Manual / Electrical & power control / LAN System (LAN) / System

CAN COMMUNICATION SYSTEM

CAN COMMUNICATION SYSTEM : System 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.

DIAG ON CAN

DIAG ON CAN : System Description

SYSTEM DIAGRAM

SYSTEM DIAGRAM

SYSTEM DIAGRAM

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.

Precautions

Precautions for Trouble Diagnosis CAUTION: Follow the instructions listed below. Failure to do this may cause damage to parts: Never apply 7.0 V or more to the measurement terminal. Use a ...

Trouble diagnosis

Component Description ...

Other materials:

Before starting the engine
Make sure the area around the vehicle is clear. Check fluid levels such as engine oil, coolant, brake and clutch fluid (if so equipped), and windshield-washer fluid as frequently as possible, or at least whenever you refuel. Check that all windows and lights are clean. Visually insp ...

B terminal circuit
Description Terminal "B" is constantly supplied with battery power. Diagnosis Procedure Regarding Wiring Diagram information, refer to STR, "Wiring Diagram - With Intelligent Key System" or STR, "Wiring Diagram - Without Intelligent Key System". CAUTION: Perform diagnosis ...

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