Code No.B1A08 Keyless/KOS key1 performance
Code No.B1A09 Keyless/KOS key2 performance
Code No.B1A0A Keyless/KOS key3 performance
Code No.B1A0B Keyless/KOS key4 performance
Code No.B1A0C Keyless key 5 performance
Code No.B1A0D Keyless key 6 performance
Code No.B1A0E Keyless key 7 performance
Code No.B1A0F Keyless key 8 performance


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

DIAGNOSTIC FUNCTION



JUDGMENT CRITERIA



  • B1A08: WCM determines that the abnormality is present when the rolling code received from the transmitter 1 (the first transmitter registered in WCM) greatly differs from the rolling code stored in WCM.
  • B1A09: WCM determines that the abnormality is present when the rolling code received from the transmitter 2 (the second transmitter registered in WCM) greatly differs from the rolling code stored in WCM.
  • B1A0A: WCM determines that the abnormality is present when the rolling code received from the transmitter 3 (the third transmitter registered in WCM) greatly differs from the rolling code stored in WCM.
  • B1A0B: WCM determines that the abnormality is present when the rolling code received from the transmitter 4 (the fourth transmitter registered in WCM) greatly differs from the rolling code stored in WCM.
  • B1A0C: WCM determines that the abnormality is present when the rolling code received from the transmitter 5 (the fifth transmitter registered in WCM) greatly differs from the rolling code stored in WCM.
  • B1A0D: WCM determines that the abnormality is present when the rolling code received from the transmitter 6 (the sixth transmitter registered in WCM) greatly differs from the rolling code stored in WCM.
  • B1A0E: WCM determines that the abnormality is present when the rolling code received from the transmitter 7 (the seventh transmitter registered in WCM) greatly differs from the rolling code stored in WCM.
  • B1A0F: WCM determines that the abnormality is present when the rolling code received from the transmitter 8 (the eighth transmitter registered in WCM) greatly differs from the rolling code stored in WCM.

PROBABLE CAUSES



  • Rolling code out of synchronisation
  • Malfunction of the transmitter
  • Malfunction of the WCM

DIAGNOSTIC PROCEDURE


STEP 1. Synchronise the rolling code and recheck the diagnosis code.


(1)Synchronise the rolling code.

  • Push the lock switch or unlock switch of transmitter twice or more.
  • If the keyless operation does not resume by the procedure above, register the key again (Refer to ).
(2)Recheck if the diagnosis code is set.
..... Push the lock switch or unlock switch of transmitter.
..... Check if the diagnosis code is set.

Q. Is the diagnosis code set?





STEP 2. Check whether the diagnosis code is reset.



(1)Push the lock switch or unlock switch of transmitter.
(2)Check if the diagnosis code is set.

Q. Is the diagnosis code set?