DIAGNOSIS
TSB Revision
WIRELESS CONTROL MODULE (WCM)
42C-83
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 and an air-cleaning device that
has a power plug) near the ignition key inserted in the
key cylinder?
YES : Move away or remove other ignition keys or things
that interfere with the communication (things that
generate radio waves such as magnets and a
air-cleaning device that has a power plug) near the
ignition key. Then, go to step 2.
NO : Go to Step 3.
STEP 2. Retest the system
Check that the ignition key can be registered.
Q: Is the ignition key that cannot be registered using scan
tool in good condition?
YES : The procedure is complete.
NO : Go to Step 3.
STEP 3. Check which ignition key cannot be registered.
Q: Can any one of the ignition keys be registered?
YES (Only some keys) : Replace the key that cannot be
registered and register the ID codes. (Refer to
P.42C-10
. After registering the ID codes, go to Step 5.
NO (All keys) : Go to Step 4.
STEP 4. Retest the system
Check the scan tool screen when the key was not able to be
registered.
Q: Is the error message of scan tool screen "Abnormality
in key" ?
YES (Abnormality in key) : Carry out DTC B1A25:
Transponder ID unmatched and DTC B1A35:
Transponder read error. Refer to
P.42C-28
B1A25,
P.42C-32
B1A35. Then, go to Step 5.
NO (ECU internal error) : Replace WCM and register the
ID codes. (Refer to
P.42C-10
. After registering the ID
codes, go to Step 5.
STEP 5. Retest the system
Check that the ignition key can be registered.
Q: Is the ignition key cannot be registered using scan tool
in good condition?
YES : The procedure is complete.
NO : Replace WCM and register the ID codes. (Refer to
P.42C-10
.)