Code No. B1A28 ENG ECU authentification error



caution
  • If the diagnosis code No. B1A28 is set, diagnose the CAN bus lines.
  • When replacing the ECU, always check that the communication circuit is normal.

DIAGNOSTIC FUNCTION


When the OSS certification result is different from the engine status after the completion of engine starting permission communication, OSS-ECU determines that a problem has occurred, and sets the diagnosis code No.B1A28. At the same time, OSS-ECU displays the immobilizer certification system inspection warning screen to the multi information display of the combination meter.

JUDGEMENT CRITERIA


Check Conditions
Judgment Criterion

PROBABLE CAUSES




DIAGNOSIS PROCEDURE


1.M.U.T.-III CAN bus diagnosis
2.Checking whether OSS-ECU diagnosis code No.B1161 is set
3.OSS-ECU diagnosis code recheck