Code No.B2417 OSS authentification error


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

DIAGNOSIS FUNCTION



JUDGEMENT CRITERIA



PROBABLE CAUSES



  • Malfunction of OSS-ECU (OSS-ECUs have been interchanged between two vehicles.)
  • Malfunction of KOS-ECU

DIAGNOSIS PROCEDURE


STEP 1. M.U.T.-III other system diagnosis code



Q. Is the diagnosis code set?





STEP 2. M.U.T.-III diagnosis code



Q. Is the diagnosis code set?





STEP 3. Check whether the diagnosis code is reset.


(1)Erase the diagnosis code.
(2)Turn the power supply mode of the engine switch from OFF to ON (Refer to Forced Power Supply Output ).
(3)Check if the diagnosis code is set.

Q. Is the diagnosis code set?