Encrypted Code Registration Criteria Table

CAUTION: Do not replace the powertrain control module and the ETACS-ECU simultaneously. Always replace either one of the ECUs first, and register the encrypted code. Then, replace the other ECU.

The ignition key contains a transponder (small transmitter), which retains an unique encrypted code. When replacing the parts of the immobilizer system, always register the encrypted code or VIN, or both of them according to the list below. The ETACS-ECU can retain a maximum of eight different encrypted codes. This means that a maximum of eight ignition keys can be registered.

ENCRYPTED CODE REGISTRATION CRITERIA TABLE

ITEM	OPERATION	REFERENCE
When the powertrain control module is replaced	Record the VIN.	Refer to PRECAUTIONS BEFORE SERVICE .
When the powertrain control module is reprogrammed	Registration not needed	-
When the ETACS-ECU is replaced	After recording the VIN, register all the ignition keys again.	Recording of the VIN: Refer to PRECAUTIONS BEFORE SERVICE . Reregistration of the ignition key: Refer to ENCRYPTED CODE REGISTRATION PROCEDURE .
When the ignition key ring antenna is replaced	Registration not needed	-
When the ignition key is added	Register all the ignition keys again.	Refer to ENCRYPTED CODE REGISTRATION PROCEDURE .
When the ignition key is lost	Register all the ignition keys except the lost ignition key again.
When the ignition key set or the ignition key cylinder is replaced (When all the ignition keys are changed)	Register all the ignition keys according to the tag on the ignition key set.

NOTE: The engine does not start until the matching has been completed.