Code No.B1A10 Keyless/KOS key 1 low battery
Code No.B1A11 Keyless/KOS key 2 low battery
Code No.B1A12 Keyless/KOS key 3 low battery
Code No.B1A13 Keyless/KOS key 4 low battery
Code No.B1A14 Keyless key 5 low battery
Code No.B1A15 Keyless key 6 low battery
Code No.B1A16 Keyless key 7 low battery
Code No.B1A17 Keyless key 8 low battery


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

DIAGNOSTIC FUNCTION



JUDGMENT CRITERIA



  • B1A10: WCM determines that the abnormality is present when it receives low battery voltage signal from the transmitter 1 (the first transmitter registered in WCM) five consecutive times.
  • B1A11: WCM determines that the abnormality is present when it receives low battery voltage signal from the transmitter 2 (the second transmitter registered in WCM) five consecutive times.
  • B1A12: WCM determines that the abnormality is present when it receives low battery voltage signal from the transmitter 3 (the third transmitter registered in WCM) five consecutive times.
  • B1A13: WCM determines that the abnormality is present when it receives low battery voltage signal from the transmitter 4 (the fourth transmitter registered in WCM) five consecutive times.
  • B1A14: WCM determines that the abnormality is present when it receives low battery voltage signal from the transmitter 5 (the fifth transmitter registered in WCM) five consecutive times.
  • B1A15: WCM determines that the abnormality is present when it receives low battery voltage signal from the transmitter 6 (the sixth transmitter registered in WCM) five consecutive times.
  • B1A16: WCM determines that the abnormality is present when it receives low battery voltage signal from the transmitter 7 (the seventh transmitter registered in WCM) five consecutive times.
  • B1A17: WCM determines that the abnormality is present when it receives low battery voltage signal from the transmitter 8 (the eighth transmitter registered in WCM) five consecutive times.

PROBABLE CAUSES



  • Battery failure in the transmitter
  • Malfunction of the transmitter
  • Malfunction of WCM

DIAGNOSTIC PROCEDURE


STEP 1. Replace the battery in the transmitter and recheck the diagnosis code.



(1)Replace the battery in the transmitter by which the diagnosis code is set.
(2)Use the transmitter to lock/unlock the doors.
(3)Check if the diagnosis code is set.

Q. Is the diagnosis code set?





STEP 2. Replace the transmitter and recheck the diagnosis code.



(1)Use the transmitter to lock/unlock the doors.
(2)Check if the diagnosis code is set.

Q. Is the diagnosis code set?