ENGINE IMMOBILISER SYSTEM, Diagnostic DTC:B2793, B2794, B2795

DTC Code DTC Name
B2793 Transponder Chip Malfunction
B2794 Unmatched Encryption Code
B2795 Unmatched Key Code

DESCRIPTION

DTC B2793 is stored when a malfunction is found in the key during key code registration or a key code is not registered normally. Replace the key if key code registration cannot be performed normally and this DTC is output.

DTC B2794 is stored when a key with an incomplete key code is inserted into the ignition key cylinder.

DTC B2795 is stored when a key with a key code that is not registered in the ECU is inserted into the ignition key cylinder.

DTC Code DTC Detection Condition Trouble Area DTC Output Confirmation Operation
B2793 A transponder chip malfunction (1 trip detection logic*). Key Insert the key into the ignition key cylinder.
B2794 A key with an incomplete key code is inserted into the ignition key cylinder (1 trip detection logic*). Key Insert the key into the ignition key cylinder.
B2795 A key with a different vehicle serial number is inserted into the ignition key cylinder (1 trip detection logic*). Key Insert the key into the ignition key cylinder.

Vehicle Condition and Fail-safe Operation when Malfunction Detected
Vehicle Condition when Malfunction Detected Fail-safe Operation when Malfunction Detected
Engine cannot be started. -
Related Data List and Active Test
DTC Code Data List and Active Test
B2793 Abnormal Status
B2794 Different Encrypt Code
B2795 Different Serial Number

INSPECTION PROCEDURE

Note


  • When replacing the key, refer to the Service Bulletin.

  • After performing repairs, perform the operation that fulfills the DTC output confirmation operation, and then confirm that no DTCs are output again.

PROCEDURE


  1. REREGISTER KEY


    1. Clear the DTC Click here.

    2. Reregister the key, and check that the engine starts with the key.

      OK
      Engine starts.

    NG

    REPLACE KEY

    OK

    END (KEY CODE IS NOT REGISTERED NORMALLY)