CHASSIS ELECTRICAL ± Ignition Switch and Immobilizer System
54A-15
ENCRYPTED CODE REGISTRATION METHOD
AND RESETTING THE CODE TO THE FACTORY
SETTING
Register the encrypted code in the immobilizer-ECU and then
reset the code to the factory setting after parts have been
replaced.
Replacement part Encrypted code
Ignition key Necessary
Immobilizer-ECU Necessary
Engine-ECU* Necessary
NOTE
*: If the engine-ECU is replaced, the immobilizer-ECU and
ignition key should be replaced together with it.
Each engine-ECU has an individual information for
immobilizer-ECU, and the individual information is registered
in the immobilizer-ECU and ignition key.
ENCRYPTED CODE REGISTRATION METHOD
If using an ignition key that has just been newly purchased,
or if the immobilizer-ECU has been replaced, you will need
to register the encrypted codes for each ignition key being
used into the immobilizer-ECU. (A maximum of eight different
encrypted codes can be registered.)
Moreover, when the immobilizer-ECU has been replaced, you
will need to use the MUT-II to input the vehicle secret code
and to register the password (secret code) that the user
specifies into the immobilizer-ECU. (Refer to the ªMUT-II
REFERENCE MANUALº or ªMUT-II OPERATING IN-
STRUCTIONSº)
Caution
If registering of the encrypted codes is carried out after
all previously-registered codes have been erased, you
should have ready all of the ignition keys that have already
been registered.
1. Connect the MUT-II to the diagnosis connector.
Caution
Turn the ignition switch to LOCK (OFF) position before
connection or disconnection of the MUT-II.
2. Check that the diagnosis code No.54 is not being generated
by the engine-ECU. If it is being generated check according
to the Troubleshooting Procedures.
3. Use the ignition key that is to be registered to turn on
the ignition switch.
MUT-II
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