WCM sets the diagnosis code No. B1A35 when it cannot receive data from the transponder.
JUDGEMENT CRITERIA
WCM determines that the abnormality is present, if it cannot receive the key ID for the
ignition key when the ignition switch is turned ON.
PROBABLE CAUSES
Malfunction of the ignition key
Malfunction of WCM
Interference of the key ID
DIAGNOSIS PROCEDURE
STEP 1. Check the ignition key inserted in the key cylinder
for interference.
Q.
Are there other ignition keys or anything that interferes with the communication (things
that generate radio waves such as magnets or air-cleaning device that has a power plug) near the
ignition key inserted in the key cylinder?
Move away or remove other ignition keys or anything that interferes with the communication,
and go to Step 2.
Go to Step 2.
STEP 2. Check whether the diagnosis code is reset.
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 3.
The diagnosis is complete.
STEP 3. 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 ).
Go to Step 2.
), and recheck if the diagnosis
code is set.