Code No.B1A25
Transponder ID unmatched
caution |
- When replacing
the ECU, always check that the communication circuit is normal.
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DIAGNOSTIC FUNCTION
The KOS&OSS-ECU sets diagnosis code No. B1A25 when the received key ID is different
from the registered one or the key slot cannot communicate with the key correctly.
JUDGEMENT CRITERIA
KOS&OSS-ECU determines that the abnormality is present, if the key ID does not
match the one registered in the KOS&OSS-ECU.
PROBABLE CAUSES
- Malfunction of the keyless operation key or spare key
- Malfunction of KOS&OSS-ECU
- Key is registered to another vehicle
DIAGNOSIS PROCEDURE
STEP 1. All of the registered keyless operation key and
spare key should allow the engine switch to be turned all positions
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(1)Prepare all of the registered keyless operation key and spare key.
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(2)Remove the batteries from all of the keyless operation keys (Refer to ).
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(3)Insert one of the keyless operation key and spare key into the key slot, after
the engine switch to "LOCK" (OFF) position.
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(4)Check whether the engine switch can be turned from all positions.
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(5)Turn the engine switch to "LOCK" (OFF) position again.
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(6)Repeat the same procedure for the other keyless operation key and spare key. Check
that all of the registered keyless operation key and spare key allow the engine switch to be
turned all positions.
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(7)Install the batteries to all the keyless operation keys.
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Q.
Is the check result normal?
The engine switch can be turned all positions by operating all of the keyless operation
key and spare key
: Check if the diagnosis code is set. If the diagnosis code is erased, the diagnosis is
complete. If not, go to Step 3.
The engine switch cannot be turned all positions by operating all of the keyless operation
key and spare key
: Check whether diagnosis code B2352 is set. If diagnosis code B2352 is set, go
to the troubleshooting (Refer to
). Repeat Step 1. If diagnosis code B2352 is not set, go to Step 2.
STEP 2. Register the keyless operation key and spare key which cannot
activate the engine switch again.
Register the keyless operation key and spare key which cannot activate the engine switch
again (Refer to
).
Q.
Is the check result normal?
All of the keyless operation key and spare key can be registered again
: Go to Step 3.
All of the keyless operation key and spare key cannot be registered again
: The keyless operation key and spare key, which cannot be registered, is defective.
Put it aside. Go to Step 3.
STEP 3. It should allow the engine switch to be turned all positions,
after register all of the keyless operation key and spare key again.
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(1)Remove the batteries from all of the keyless operation keys (Refer to ).
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(2)Insert one of the keyless operation key and spare key into the key slot, after
the engine switch to "LOCK" (OFF) position.
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(3)Check whether the engine switch can be turned all positions.
|
|
(4)Turn the engine switch to "LOCK" (OFF) position again.
|
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(5)Repeat the same procedure for the other keyless operation key and spare key. Check
that all of the registered keyless operation key and spare key allow the engine switch to be
turned all positions.
|
|
(6)Install the batteries to all the keyless operation keys.
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Q.
Is the check result normal?
The engine switch can be turned all positions by operating all of the keyless operation
key and spare key
: Check if the diagnosis code is set. If the diagnosis code is erased, the diagnosis is
complete. If not, go to Step 5.
The engine switch cannot be turned all positions by operating all of the keyless operation
key and spare key
: Go to Step 4.
STEP 4. Replace the keyless operation key and spare key which cannot
activate the engine switch with a new one
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(1)Replace the keyless operation key and spare key which cannot activate the engine
switch with a new one.
note |
Exclude the keyless operation key and spare key which you put aside on Step 2.
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(2)Register a new keyless operation key and spare key (Refer to ).
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(3)Check that all of the registered keyless operation key and spare key allow the
engine switch to be turned all positions.
.....
Remove the batteries from all of the keyless operation keys (Refer to ).
.....
Insert one of the keyless operation key and spare key into the key slot, after
the engine switch to "LOCK" (OFF) position.
.....
Check whether the engine switch can be turned all positions.
.....
Turn the engine switch to "LOCK" (OFF) position again.
.....
Repeat the same procedure for the other keyless operation key and spare key. Check that
all of the registered keyless operation key and spare key allow the engine switch to be turned
all positions.
.....
Install the batteries to all the keyless operation keys.
|
Q.
Is the check result normal?
The engine switch can be turned all positions by operating all of the keyless operation
key and spare key
: Check if the diagnosis code is set. If the diagnosis code is erased, the diagnosis is
complete. If not, go to Step 5.
The engine switch cannot be turned all positions by operating all of the keyless operation
key and spare key
: Go to Step 5.
STEP 5. It should allow the engine switch to be turned all positions,
after replace the KOS&OSS-ECU, and then register all of the keyless operation key and
spare key again.
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(1)Replace KOS&OSS-ECU and register the ID codes (Refer to ).
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(2)Register all of the keyless operation key and spare key again (Refer to ).
note |
Exclude the keyless operation key and spare key which you put aside on Step 2.
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|
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(3)Check that all of the registered keyless operation key and spare key allow the
engine switch to be turned all positions.
.....
Remove the batteries from all of the keyless operation keys (Refer to ).
.....
Insert one of the keyless operation key and spare key into the key slot, after
the engine switch to "LOCK" (OFF) position.
.....
Check whether the engine switch can be turned all positions.
.....
Turn the engine switch to "LOCK" (OFF) position again.
.....
Repeat the same procedure for the other keyless operation key and spare key. Check that
all of the registered keyless operation key and spare key allow the engine switch to be turned
all positions.
.....
Install the batteries to all the keyless operation keys.
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Q.
Is the check result normal?
The engine switch can be turned all positions by operating all of the keyless operation
key and spare key
: Go to Step 6.
The engine switch cannot be turned all positions by operating all of the keyless operation
key and spare key
: Go to Step 1.
STEP 6. Check whether the diagnosis code is set again.
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(1)Erase the diagnosis code.
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(2)Check if the diagnosis code is set.
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Q.
Is the diagnosis code set?
Go to Step 1.
The diagnosis is complete.