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DTC C0610-12: Right Electric Parking Brake Actuator Control Circuit Short to Battery [11/2021 - ]: Procedure

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  1. CHECK FOR SHORT TO +B 

    Pre-procedure1

    1. Turn the ignition switch off.
    2. Make sure the No. 1 parking brake wire assembly is securely installed.
    3. Disconnect the f1 parking brake actuator assembly RH connector.

      Procedure1

    4. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      f1-2 (RE+) - f1-1 (RE-) Electric parking brake not operating Below 1 V

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    5. None

    Result: 

    OK 

    REPLACE PARKING BRAKE ACTUATOR ASSEMBLY RH. Refer to  REMOVAL [11/2021 - 03/2024]  , or refer to  REMOVAL [03/2024 - ] 

    Result: 

    NG 

    See step  2

  2. CHECK FOR SHORT TO +B 

    Pre-procedure1

    1. Disconnect the fG1 No. 1 parking brake wire assembly connector.

      Procedure1

    2. Measure the voltage according to the value(s) in the table below.
      GTY1059845Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 1 Parking Brake Wire Assembly)

      Standard Voltage

      Tester Connection Condition Specified Condition
      fG1-1 - fG1-2 Electric parking brake not operating Below 1 V

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    3. None

    Result: 

    OK 

    REPLACE NO. 1 PARKING BRAKE WIRE ASSEMBLY 

    Result: 

    NG 

    See step  3

  3. CHECK FOR SHORT TO +B 

    Pre-procedure1

    1. Disconnect the fG1 No. 1 parking brake wire assembly connector.
    2. Disconnect the A38 No. 2 skid control ECU (brake actuator assembly) connector.

      Procedure1

    3. Measure the voltage according to the value(s) in the table below.
      GTY1060301Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector *b to No. 2 Skid Control ECU (Brake Actuator Assembly)
      *c to No. 1 Parking Brake Wire Assembly - -

      Standard Voltage

      Tester Connection Condition Specified Condition
      fG1-1 or A38-13 (MRR+) - Body ground Always Below 1 V
      fG1-2 or A38-12 (MRR-) - Body ground Always Below 1 V

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    4. None

    Result: 

    OK 

    REPLACE NO. 2 SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY). Refer to  REMOVAL [11/2021 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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