ENGINE IMMOBILISER SYSTEM(w/ Entry and Start System), Diagnostic DTC:B1576

DTC Code DTC Name
B1576 Key Write Malfunction to EFI ECU

DESCRIPTION

The ECM stores this code when an internal malfunction is detected in the ECM, or when the ROM in the ECM cannot be accessed when registering an ECU communication ID.

DTC Code DTC Detection Condition Trouble Area DTC Output Confirmation Operation
B1576

  • Internal malfunction in the ECM (1 trip detection logic*).

  • When the ROM in the ECM cannot be accessed when registering an ECU communication ID (1 trip detection logic*).

 ECM

  • Engine switch on (IG)

  • Register the ECU communication ID

Vehicle Condition and Fail-safe Operation when Malfunction Detected
Vehicle Condition when Malfunction Detected Fail-safe Operation when Malfunction Detected

  • Engine cannot be started

  • ECU communication ID cannot be registered

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Related Data List and Active Test
DTC Code Data List and Active Test
B1576 -

CAUTION / NOTICE / HINT

Note

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

PROCEDURE


  1. REGISTER ECU COMMUNICATION ID


    1. Register the ECU communication ID (Refer to Service Bulletin).

    2. Check that the engine can be started.

      OK
      The engine can be started.

    OK

    END

    NG

  2. REGISTER ECU COMMUNICATION ID


    1. Register the ECU communication ID (Refer to Service Bulletin).

    2. Check that the engine can be started.

      OK
      The engine can be started.

    OK

    END

    NG

  3. REGISTER ECU COMMUNICATION ID


    1. Register the ECU communication ID (Refer to Service Bulletin).

    2. Check that the engine can be started.

      OK
      The engine can be started.

    OK

    END

    NG

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