DTC U1073: Bus-Off
caution
If there is any problem in the CAN bus lines, an incorrect DTC may be stored. Prior to this diagnosis, diagnose the CAN bus lines.
Whenever the ECU is replaced, ensure that the CAN bus lines are normal.
DTC SET CONDITION
This DTC is stored when the abnormality below is detected:
CAN C-bus off interruption is detected.
PROBABLE CAUSES
The CAN bus line is defective.
ECU malfunction of other system
Malfunction of AWC-ECU
note
Check the following contents, before replace the AWC-ECU.
Check scan tool (M.U.T.-III) to diagnose the CAN bus lines.
Check whether the diagnosis trouble code No.U1073 is stored again.