Code No.B1A24 Key ID not registered


DIAGNOSIS FUNCTION


WCM sets the diagnosis code No. B1A24 when the key ID was not registered in it.

JUDGEMENT CRITERIA


WCM determines that the abnormality is present, if the ignition key’s key ID is not registered in WCM when the ignition switch is turned ON.

PROBABLE CAUSES



DIAGNOSIS PROCEDURE


STEP 1. Register the key ID and recheck the diagnosis code.


Register the key ID of the ignition key by which the diagnosis code is set (Refer to ), and recheck if the diagnosis code is set.
(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?

Go to Step 2.

The diagnosis is complete.

STEP 2. Replace the ignition key and recheck the diagnosis code.


Replace the ignition key by which the diagnosis code is set with a new one, register the key ID of the new key, (Refer to ), and recheck if the diagnosis code is set.
(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?

Replace WCM and register the ID codes (Refer to ).

The diagnosis is complete.