CHECK DTC.
QUESTION

Is there any DTC related to immobilizer except DTC P1571?

Yes No

Eliminate the cause of DTC other than DTC P1571, and perform the registration procedure again.

Replace the ECM and IMM ECM , and then replace all ignition keys (including the transponder). Execute the registration procedure next. Refer to REGISTRATION MANUAL FOR IMMOBILIZER (Pub. No. S0820GZ).