35 -SERVICE BRAKES > 35C-ACTIVE STABILITY CONTROL SYSTEM (ASC) > TROUBLESHOOTING<ASC-ECU><ASC-ECU> > SYMPTOM PROCEDURES > THE M.U.T.-III CANNOT COMMUNICATE WITH TCL/ACTIVE STABILITY CONTROL SYSTEM-ECU
Inspection Procedure 1: M.U.T.-IIISE communication with ABS/ASC system is impossible.
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 ).
Whenever ECU is replaced, ensure that the CAN bus lines are normal.
If the power is supplied with the earth circuit of CAN communication device open circuited, an electric potential abnormality may occur to the CAN bus lines.
COMMENTS ON TROUBLE SYMPTOM
When M.U.T.-IIISE cannot communicate with the ABS/ASC system, the CAN bus lines, ASC-ECU power supply circuit system, earth, or ASC-ECU may be faulty.
