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Home >> Toyota >> 2025 >> RAV4 Plug-In Hybrid XSE >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 402 (Electric Parking Brake System (W/ Vacuum Brake Booster) - Diagnostic Codes & Symptom Tests) >> ELECTRIC PARKING BRAKE SYSTEM (w/ Vacuum Brake Booster) >> DTC C060B-12: Left Electric Parking Brake Actuator Control Circuit Short to Battery [11/2018 - 10/2019] >> Procedure

DTC C060B-12: Left Electric Parking Brake Actuator Control Circuit Short to Battery [11/2018 - 10/2019]: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CHECK FOR SHORT TO +B 
    1. Turn the ignition switch off.
    2. Make sure the No. 2 parking brake wire assembly is securely installed.
    3. Disconnect the N57 parking brake actuator assembly LH connector.
    4. Measure the voltage according to the value(s) in the table below.
      GTY931906Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of No. 2 Parking Brake Wire Assembly
      (to Parking Brake Actuator Assembly LH)

      Standard Voltage

      Tester Connection Condition Specified Condition
      N57-2 (LE+) - N57-1 (LE-) Electric parking brake not operating Below 1 V

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE PARKING BRAKE ACTUATOR ASSEMBLY LH. Refer to  REMOVAL [11/2018 - ] 

    Result: 

    NG 

    See step  2

  2. CHECK FOR SHORT TO +B 
    1. Disconnect the NN2 No. 2 parking brake wire assembly connector.
    2. Measure the voltage according to the value(s) in the table below.
      GTY884857Courtesy 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
      NN2-1 - NN2-2 Electric parking brake not operating Below 1 V

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 2 PARKING BRAKE WIRE ASSEMBLY 

    Result: 

    NG 

    See step  3

  3. CHECK FOR SHORT TO +B 
    1. Disconnect the NN2 No. 2 parking brake wire assembly connector.
    2. Disconnect the A39 skid control ECU (brake actuator assembly) connector.
    3. Measure the voltage according to the value(s) in the table below.
      GTY891406Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector *b (to Skid Control ECU (Brake Actuator Assembly))
      *c (to No. 2 Parking Brake Wire Assembly) - -

      Standard Voltage

      Tester Connection Condition Specified Condition
      NN2-1 or A39-13 (MRL+) - Body ground Always Below 1 V
      NN2-2 or A39-12 (MRL-) - Body ground Always Below 1 V

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY). Refer to  REMOVAL [11/2018 - 10/2019] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR