Code No.B1A35 Transponder read error



caution
  • When the diagnosis code No. B1A35 is set, be sure to diagnose the CAN bus line.
  • When replacing the ECU, always check that the communication circuit is normal.

DIAGNOSIS FUNCTION




JUDGMENT CRITERIA




PROBABLE CAUSES



  • Insufficient inverse insertion of keyless operation key at the emergency operation
  • Malfunction of CAN bus line
  • Malfunction of the keyless operation key
  • Malfunction of KOS-ECU
  • Interference of the key ID
  • Ignition switch ON by the emergency key only

DIAGNOSIS PROCEDURE


STEP 1. Sufficiently insert the keyless operation key in the inverted direction at the emergency operation, and recheck the diagnosis code.



(1)With the emergency operation by the sufficient inverse insertion of keyless operation key, turn the ignition switch from the LOCK (OFF) position to the ON position.
(2)Check if the diagnosis code is set.

Q. Is the diagnosis code set?





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



Q. Is the check result normal?





STEP 3. Check the interference of the inversely-inserted keyless operation key at the emergency operation



Q. Are there other keys or anything that interferes with the communication?





STEP 4. Check whether the diagnosis code is reset.



(1)Turn the ignition switch from the LOCK (OFF) position to the ON position.
(2)Check if the diagnosis code is set.

Q. Is the diagnosis code set?





STEP 5. Replace the ignition key with another registered key for the vehicle, and recheck the diagnosis code.



(1)Turn the ignition switch from the LOCK (OFF) position to the ON position.
(2)Check if the diagnosis code is set.

Q. Is the diagnosis code set?





STEP 6. Register the key ID and recheck the diagnosis code.



(1)Turn the ignition switch from the LOCK (OFF) position to the ON position.
(2)Check if the diagnosis code is set.

Q. Is the diagnosis code set?





STEP 7. Replace the ignition key with a new one, and recheck the diagnosis code.



(1)Turn the ignition switch from the LOCK (OFF) position to the ON position.
(2)Check if the diagnosis code is set.

Q. Is the diagnosis code set?