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If the ignition key,
immobilizer-ECU, engine-ECU <M/T> or
engine-A/T-ECU <A/T> is replaced or an ignition
key is added, encrypted codes of all the ignition keys must
be registered. (A maximum of eight different ignition key
can be registered). Moreover, when the immobilizer-ECU has
been replaced, you will need to use M.U.T.-III to register
the immobilizer-ECU and input the vehicle secret code and to
register the password (secret code) that the owner specifies
into the immobilizer-ECU. If an attempt is made to start the
engine with an unregistered ignition key, cranking occurs,
but fuel supply is cut off to disable the engine. In
approximately.
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If none of the functions can be
used, check the diagnosis codes, and after carrying out any
necessary repairs, repeat the operation. If an incorrect
password is input ten times in a row, the immobilizer-ECU
judges that an unauthorized operation is being attempted.
Start-prevention mode will be set, and engine operation will
stop and all special functions will be disabled. If the
ignition switch is turned to "ON" position,
"Unauthorized operation, start- prevention mode" will be
cancelled.
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All ignition keys can be registered
with M.U.T.-III. Additional ignition keys can be registered
with M.U.T.-III.
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![](../../../img/54/AC310120AB00ENG.png)
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1.Connect the M.U.T.-III to
the diagnosis connector (16-pin). 2.Turn the
ignition switch to "ON" position.
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![](../../../img/54/AC209666AD00ENG.png)
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3.Select "System select"
from the start-up screen.
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![](../../../img/54/AC305175AA00ENG.png)
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4.Choose "IMMOBILIZER" from
the "POWER TRAIN" tab.
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![](../../../img/54/AC305176AA00ENG.png)
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5.Choose "Special Function"
from "IMMOBILIZER" screen.
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![](../../../img/54/AC305177AA00ENG.png)
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6.Choose "Key registration"
from "Special Function" screen.
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![](../../../img/54/AC207300AD00ENG.png)
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7.Enter the vehicle’s
password (secret code) on the "Key registration" screen, and
then click the check mark icon. Follow the prompts on the
screen to insert key(s) into the ignition switch to begin
key registration.
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![](../../../img/54/AC207302AA00ENG.png)
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8.If the key ID was
registered successfully, "Progress" indication will turn
active (grey). Then the registration process completes. If
the key ID failed to be registered, "In-Complete" indication
will turn active (grey). 9.The number of keys
currently registered will be displayed. To register an
additional key, replace the ignition key with the next key
to be registered within five seconds. Key ID registration
screen will be displayed, then register another
key.
note |
A maximum of eight different
keys can be registered.
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10.This completes the registration operation.
Turn the ignition switch "LOCK" (OFF) and leave it off for
approximately ten seconds. 11.Check that the
engine can be started with each of the ignition
keys. 12.Check that the immobilizer system
diagnosis code and MPI system diagnosis code did not
set. 13.If not diagnosis code is shown, terminate
the M.U.T.-III. 14.Turn the ignition switch to
"LOCK" (OFF) position. 15.Disconnect
M.U.T.-III.
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Additional key(s) can be registered
with the M.U.T.-III while keeping all existing key
data.
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![](../../../img/54/AC310120AB00ENG.png)
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1.Connect M.U.T.-III to the
16-pin diagnosis connector. 2.Turn the ignition
switch to "ON" position.
note |
Before registration, check
that no diagnosis code is set. If a diagnosis
code is set, resolve the problem
beforehand.
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3.Carry out steps 3 to 6 of the sub-section
"Registration with M.U.T.-III."
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![](../../../img/54/AC305177AA00ENG.png)
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4.Choose
"Transponder ID addition" from "Special Function"
screen.
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![](../../../img/54/AC207301AA00ENG.png)
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5.Enter the vehicles
password (secret code) on the "Transponder ID addition"
screen, and then click the check mark icon.
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![](../../../img/54/AC209775AA00ENG.png)
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6.If an additional
registration is made successfully, the screen will ask if
another key is registered or not. If the third ignition key
is registered, remove the key, which has been registered.
Then insert the third key within five seconds, and then turn
it to the ON position. 7.Register the additional
ignition key according to step 6 above. The number of the
registered ignition keys are shown on
"The number of registered key" screen.
note |
A maximum of eight different
keys can be registered.
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8.This completes the registration operation.
Turn the ignition switch "LOCK" (OFF) and leave it off for
approximately ten seconds. 9.Check that the engine
can be started with each of the ignition
keys. 10.Check that the immobilizer system
diagnosis code and MPI system diagnosis code did not
set. 11.If not diagnosis code is shown, terminate
the M.U.T.-III. 12.Turn the ignition switch to
"LOCK" (OFF) position. 13.Disconnect
M.U.T.-III.
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