U1001

DTC U1001 CAN COMMUNICATION LINE





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
The MIL will not illuminate for this diagnosis.









DTC Confirmation Procedure
1. Turn ignition switch ON and wait at least 3 seconds.
2. Check 1st trip DTC.
3. If 1st trip DTC is detected, go to U1001.




Wiring Diagram









Diagnosis Procedure
Go to Trouble Diagnosis Flow Chart.