U0140

U0140 CAN COMM Circuit

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.

On Board Diagnosis Logic

This self-diagnosis has the one trip detection logic.






DTC Confirmation Procedure

1) Turn ignition switch ON and wait at least 3 seconds.
2) Check DTC.
3) If DTC is detected, go to "Diagnosis Procedure".

Diagnosis Procedure

Go to [LAN System: Basic Inspection] LAN System Basic Inspection.