Code No.B1140 KOS authentification error


DIAGNOSTIC FUNCTION



JUDGEMENT CRITERIA


Check Conditions
  • At KOS-ECU certification (at transition of power supply mode from OFF to ACC)
Judgment Criterion
  • As a result of the certification communication with KOS-ECU, OSS-ECU receives the abnormal data from KOS-ECU.

PROBABLE CAUSES



  • KOS-ECU malfunction (KOS-ECU has been interchanged between two vehicles, or various registrations are not complete after KOS-ECU replacement)
  • Malfunction of the CAN bus line
  • Malfunction of OSS-ECU

DIAGNOSIS PROCEDURE


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