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

ETACS-ECU sets the diagnosis code No. B1A10, B1A11, B1A12, B1A13, B1A14, B1A15, B1A16, or B1A17 when it receives low battery voltage signal from the transmitter.

JUDGMENT CRITERIA

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

PROBABLE CAUSES

Battery failure in the transmitter
Malfunction of the transmitter
Malfunction of ETACS-ECU