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Home >> Lexus >> 2021 >> LS 500h AWD >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Electronically Controlled Brake System (W/O Advanced Park) - Diagnostic Codes (3 Of 3) & Symptom Tests >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Advanced Park) >> DTC C1451: Motor Drive Permission Malfunction [10/2020 - 10/2023] >> Procedure

DTC C1451: Motor Drive Permission Malfunction [10/2020 - 10/2023]: Procedure

  1. CHECK BRAKE FLUID LEVEL 
    1. Check that the brake fluid level is sufficient.

      OK

      Brake fluid level is sufficient.

      HINT: 

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    CHECK AND REPAIR BRAKE FLUID LEAKS OR ADD FLUID 

    Result: 

    OK 

    See step  2

  2. PERFORM AIR BLEEDING 
    1. Bleed the air from the brake system.

      Refer to BLEEDING [10/2020 - 10/2023]

      HINT: 

      If air bleeding has been performed, this DTC will be cleared.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  3

  3. RECONFIRM DTC 
    1. Check if the same DTC is output.

      Refer to DTC CHECK / CLEAR [10/2020 - 10/2023]

      Chassis > ABS/VSC/TRAC > Trouble Codes 

      Result

      Result Proceed to
      DTC C1451 is output. A
      DTC C1451 is not output. B

    Result: 

    B 

    END 

    Result: 

    A 

    See step  4

  4. CLEAR DTC 
    1. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [10/2020 - 10/2023]

      Chassis > ABS/VSC/TRAC > Clear DTCs 

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    END