CODE NO. U0019 Bus off


caution
  • If diagnosis code No. U0019 is set, be sure to diagnose the CAN bus line.
  • When replacing the ECU, always check that the communication circuit is normal.

DIAGNOSTIC FUNCTION



JUDGEMENT CRITERIA



PROBABLE CAUSES



DIAGNOSIS PROCEDURE


STEP 1. Check whether the diagnosis code is reset..


(1)Connect the negative battery terminal.
(2)After erasing the diagnosis code memory, check the diagnosis code again.
(3)Disconnect the negative battery terminal.

Q. Is the diagnosis code No. U0019 set?





STEP 2. M.U.T.-III CAN bus diagnostics.



Q. Is the check result normal?