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DTC C060E-19: Left Electric Parking Brake Actuator Circuit Current Above Threshold [11/2021 - ]: Procedure

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  1. INSPECT NO. 2 PARKING BRAKE WIRE ASSEMBLY 

    Procedure1

    1. Make sure that there is no looseness at the locking part and the connecting part of the connectors.

      OK

      The connector is securely connected.

      Pre-procedure1

    2. Disconnect the fG3 and f4 No. 2 parking brake wire assembly connectors.

      Procedure2

    3. Check both the connector case and the terminals for deformation and corrosion.

      OK

      No deformation or corrosion.

      Procedure3

    4. Measure the resistance according to the value(s) in the table below.
      GTY1059487Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of No. 2 Parking Brake Wire Assembly *b to wire harness connector
      *c to Parking Brake Actuator Assembly LH - -

      Standard Resistance

      Tester Connection Condition Specified Condition
      fG3-1 - f4-2 (LE+) Always Below 1 Ω
      fG3-1 or f4-2 (LE+) - Body ground and other terminals Always 10 kΩ or higher
      fG3-2 - f4-1 (LE-) Always Below 1 Ω
      fG3-2 or f4-1 (LE-) - Body ground and other terminals Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    5. None

    Result: 

    NG 

    REPLACE NO. 2 PARKING BRAKE WIRE ASSEMBLY 

    Result: 

    OK 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (NO. 2 SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) - PARKING BRAKE ACTUATOR ASSEMBLY LH) 

    Pre-procedure1

    1. Make sure the No. 2 parking brake wire assembly is securely installed.
    2. Disconnect the A38 No. 2 skid control ECU (brake actuator assembly) connector.
    3. Disconnect the f4 parking brake actuator assembly LH connector.

      Procedure1

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      A38-3 (MRL+) - f4-2 (LE+) Always Below 1 Ω
      A38-3 (MRL+) or f4-2 (LE+) - Body ground Always 10 kΩ or higher
      A38-2 (MRL-) - f4-1 (LE-) Always Below 1 Ω
      A38-2 (MRL-) or f4-1 (LE-) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    5. None

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  3

  3. INSPECT PARKING BRAKE ACTUATOR ASSEMBLY LH 

    See step  1

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

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

    Result: 

    OK 

    See step  4

  4. CHECK FOR SHORT TO +B 

    Pre-procedure1

    1. Turn the ignition switch off.
    2. Make sure the No. 2 parking brake wire assembly is securely installed.
    3. Disconnect the f4 parking brake actuator assembly LH connector.

      Procedure1

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

      Standard Voltage

      Tester Connection Condition Specified Condition
      f4-2 (LE+) - f4-1 (LE-) Electric parking brake not operating Below 1 V

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    5. None

    Result: 

    OK 

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

    Result: 

    NG 

    See step  5

  5. CHECK FOR SHORT TO +B 

    Pre-procedure1

    1. Disconnect the fG3 No. 2 parking brake wire assembly connector.

      Procedure1

    2. Measure the voltage according to the value(s) in the table below.
      GTY1059850Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 2 Parking Brake Wire Assembly)

      Standard Voltage

      Tester Connection Condition Specified Condition
      fG3-1 - fG3-2 Electric parking brake not operating Below 1 V

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    3. None

    Result: 

    OK 

    REPLACE NO. 2 PARKING BRAKE WIRE ASSEMBLY 

    Result: 

    NG 

    See step  6

  6. CHECK FOR SHORT TO +B 

    Pre-procedure1

    1. Disconnect the fG3 No. 2 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.
      GTY1059805Courtesy 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. 2 Parking Brake Wire Assembly - -

      Standard Voltage

      Tester Connection Condition Specified Condition
      fG3-1 or A38-3 (MRL+) - Body ground Always Below 1 V
      fG3-2 or A38-2 (MRL-) - 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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