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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Smart Key System (For Start, Except HV) - Diagnostic Codes (1 Of 2) >> SMART KEY SYSTEM (for Start Function, Gasoline Model) >> DTC B277A-96: Wireless Starter Component Internal Failure [11/2023 - ] >> Procedure

DTC B277A-96: Wireless Starter Component Internal Failure [11/2023 - ]: Procedure

  1. CHECK CAN COMMUNICATION SYSTEM 
    1. Check for CAN communication system DTCs.

      HINT: 

      Refer to DIAGNOSIS SYSTEM [11/2023 - ]

      OK

      CAN communication DTCs are not output.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    GO TO CAN COMMUNICATION SYSTEM (DIAGNOSTIC TROUBLE CODE CHART). Refer to  DIAGNOSTIC TROUBLE CODE CHART [11/2023 - ] 

    Result: 

    OK 

    See step  2

  2. CONFIRM MODEL 
    1. Choose the model to be inspected.

      Result

      Result Proceed to
      w/ Genuine Remote Engine Start A
      for Remote Connect Compatible Type B

    Result: 

    GO TO TELEMATICS SYSTEM (Remote Engine Starter does not Operate). Refer to  Remote Engine Starter does not Operate [10/2021 - ] 

    Result: 

    See step  3

  3. REGISTER REMOTE ENGINE STARTER ID 
    1. Register the remote engine starter ID.

      OK

      Registration can be completed.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [11/2023 - ] 

    Result: 

    OK 

    See step  4

  4. CHECK REMOTE ENGINE STARTER FUNCTION 
    1. Check the remote engine starter function.

      OK

      Remote engine starter functions operate normally.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    END (REMOTE ENGINE STARTER ID WAS NOT REGISTERED) 

    Result: 

    NG 

    REPLACE REMOTE ENGINE START ECU