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Home >> Lexus >> 2017 >> IS 300 F Sport >> Repair and Diagnosis >> External Pages >> Different car >> Section 134 (Electric Parking Brake System - Diagnostic Codes & Symptom Tests) >> Electric Parking Brake System >> DTC C0613-19: Right Electric Parking Brake Actuator Circuit Current Above Threshold [09/2020 - ] >> Procedure

DTC C0613-19: Right Electric Parking Brake Actuator Circuit Current Above Threshold [09/2020 - ]: Procedure

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  1. INSPECT NO. 1 PARKING BRAKE WIRE ASSEMBLY 
    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.

    2. Disconnect the tP1 and t3 No. 1 parking brake wire assembly connectors.
    3. Check both the connector case and the terminals for deformation and corrosion.

      OK

      No deformation or corrosion.

    4. Measure the resistance according to the value(s) in the table below.
      GTY969009Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of No. 1 Parking Brake Wire Assembly *b (to wire harness connector)
      *c (to Parking Brake Actuator Assembly RH) - -

      Standard Resistance

      Tester Connection Condition Specified Condition
      tP1-2 - t3-2 (MRR+) Always Below 1 Ω
      tP1-2 or t3-2 (MRR+) - Body ground and other terminals Always 10 kΩ or higher
      tP1-1 - t3-1 (MRR-) Always Below 1 Ω
      tP1-1 or t3-1 (MRR-) - Body ground and other terminals Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE NO. 1 PARKING BRAKE WIRE ASSEMBLY 

    Result: 

    OK 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) - PARKING BRAKE ACTUATOR ASSEMBLY RH) 
    1. Make sure the No. 1 parking brake wire assembly is securely installed.
    2. Disconnect the A111 skid control ECU (brake actuator assembly) connector.
    3. Disconnect the t3 parking brake actuator assembly RH connector.
    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A111-13 (MRR+) - t3-2 (MRR+) Always Below 1 Ω
      A111-13 (MRR+) or t3-2 (MRR+) - Body ground Always 10 kΩ or higher
      A111-12 (MRR-) - t3-1 (MRR-) Always Below 1 Ω
      A111-12 (MRR-) or t3-1 (MRR-) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  3

  3. INSPECT PARKING BRAKE ACTUATOR ASSEMBLY RH 
    1. Remove the parking brake actuator assembly RH.

      Refer to REMOVAL [09/2020 - ]

    2. Inspect the parking brake actuator assembly RH.

      Refer to INSPECTION [09/2020 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE PARKING BRAKE ACTUATOR ASSEMBLY RH. Refer to  REMOVAL [09/2020 - ] 

    Result: 

    OK 

    See step  4

  4. CHECK FOR SHORT TO +B 
    1. Turn the engine switch off.
    2. Make sure the No. 1 parking brake wire assembly is securely installed.
    3. Disconnect the t3 parking brake actuator assembly RH connector.
    4. Measure the voltage according to the value(s) in the table below.
      GTY968505Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of No. 1 Parking Brake Wire Assembly
      (to Parking Brake Actuator Assembly RH)

      Standard Voltage

      Tester Connection Condition Specified Condition
      t3-2 (MRR+) - t3-1 (MRR-) Electric parking brake not operating Below 1 V

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE PARKING BRAKE ACTUATOR ASSEMBLY RH. Refer to  REMOVAL [09/2020 - ] 

    Result: 

    NG 

    See step  5

  5. CHECK FOR SHORT TO +B 
    1. Disconnect the tP1 No. 1 parking brake wire assembly connector.
    2. Measure the voltage according to the value(s) in the table below.
      GTY968679Courtesy 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
      tP1-2 - tP1-1 Electric parking brake not operating Below 1 V

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 1 PARKING BRAKE WIRE ASSEMBLY 

    Result: 

    NG 

    See step  6

  6. CHECK FOR SHORT TO +B 
    1. Disconnect the tP1 No. 1 parking brake wire assembly connector.
    2. Disconnect the A111 skid control ECU (brake actuator assembly) connector.
    3. Measure the voltage according to the value(s) in the table below.
      GTY969136Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector *b (to Skid Control ECU (Brake Actuator Assembly))
      *c (to No. 1 Parking Brake Wire Assembly) - -

      Standard Voltage

      Tester Connection Condition Specified Condition
      tP1-2 or A111-13 (MRR+) - Body ground Always Below 1 V
      tP1-1 or A111-12 (MRR-) - Body ground Always Below 1 V

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY). Refer to  REMOVAL [09/2020 - 11/2021]  , or refer to  REMOVAL [11/2021 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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