Inspection Procedure 1: Cannot communicate with KOS-ECU using the M.U.T.-III.


caution When replacing the ECU, always check that the communication circuit is normal.

COMMENTS ON TROUBLE SYMPTOM



PROBABLE CAUSES



  • Malfunction of the power supply and the earth of KOS-ECU
  • Malfunction of CAN bus line

DIAGNOSIS PROCEDURE


1.
2.

3.