ENGINE IMMOBILISER SYSTEM, Diagnostic DTC:B2790

DTC Code DTC Name
B2790 ID BOX EEPROM Malfunction

DESCRIPTION

This DTC is stored when the ID code box (immobiliser code ECU) detects an internal malfunction.

DTC No. DTC Detection Condition Trouble Area
B2790 ID code box (immobiliser code ECU) detects internal malfunction

  • ID code box (Immobiliser code ECU)

  • Certification ECU (Smart key ECU assembly)

INSPECTION PROCEDURE

Note


  • If the certification ECU (smart key ECU assembly) is replaced, register the key.

  • If the ID code box (immobiliser code ECU) is replaced, register the ECU code and ECU communication ID.

PROCEDURE


  1. REPLACE ID CODE BOX (IMMOBILISER CODE ECU)


    1. Replace the ID code box (immobiliser code ECU).


    NEXT

  2. ECU CODE REGISTRATION


    1. Register the ECU code.


    NEXT

  3. ECU COMMUNICATION ID REGISTRATION


    1. Register the ECU communication ID.


    NEXT

  4. CHECK DTC OUTPUT


    1. Clear the DTCs Click here.

    2. Recheck for DTCs Click here.

      OK
      DTC B2790 is not output.

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

    END (ID CODE BOX (IMMOBILISER CODE ECU) WAS DEFECTIVE)