35 -SERVICE BRAKES > 35C-ACTIVE STABILITY CONTROL SYSTEM (ASC) > TROUBLESHOOTING<ASC-ECU><ASC-ECU> > DIAGNOSIS CODE PROCEDURES > CODE NO. U1073 BUS OFF
Code No. U1073 Bus-off
caution
If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines (Refer to GROUP 54C - CAN Bus Diagnostics Table ).
If diagnosis code U1073 is set in ASC-ECU, always diagnose the CAN bus line. If there is any fault in the CAN bus lines, an incorrect diagnosis code may be set. In this case, the set diagnosis code is not highly reliable.
Whenever ECU is replaced, ensure that the CAN bus lines are normal.
DIAGNOSIS CODE SET CONDITIONS
This diagnosis code is set when ASC-ECU has ceased the CAN communication (bus off).
COMMENTS ON TROUBLE SYMPTOM
Malfunction of wiring harness, connector (s), or ASC-ECU may be present.
PROBABLE CAUSES
Wiring harness or connector failure of CAN bus line
