CAN Communication Line
DTC U1000, U1001 CAN COMMUNICATION LINEDescription
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
DTC Confirmation Procedure
1. Turn ignition switch ON and wait at least 3 seconds.
2. Check 1st tip DTC.
3. If 1st trip DTC is detected, go to "Diagnosis Procedure".
Wiring Diagram
EC-CAN-01:
Diagnosis Procedure
Go to LAN-43, "CAN System Specification Chart". CAN System Specification Chart