LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2021 >> UX 250h Luxury >> Repair and Diagnosis >> Brakes >> Parking Brake System >> Electric Parking Brake System (Diagnostic Codes & Circuit Tests) (Hybrid) >> ELECTRIC PARKING BRAKE SYSTEM (for HV Model) >> DTC C0610-12: Right Electric Parking Brake Actuator Control Circuit Short to Battery [08/2021 - ] >> Procedure

DTC C0610-12: Right Electric Parking Brake Actuator Control Circuit Short to Battery [08/2021 - ]: Procedure

  1. CHECK FOR SHORT TO +B 
    1. Turn the power switch off.
    2. Make sure the No. 1 parking brake wire assembly is securely installed.
    3. Disconnect the j2 parking brake actuator assembly RH connector.
    4. Measure the voltage according to the value(s) in the table below.
      GTY1087237Courtesy 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
      j2-2 (+) - j2-1 (-) Electric parking brake not operating Below 1 V

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE PARKING BRAKE ACTUATOR ASSEMBLY RH. Refer to  REMOVAL [10/2018 - ] 

    Result: 

    NG 

    See step  2

  2. CHECK FOR SHORT TO +B 
    1. Disconnect the jN2 No. 1 parking brake wire assembly connector.
    2. Measure the voltage according to the value(s) in the table below.
      GTY1086405Courtesy 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
      jN2-1 - jN2-2 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  3

  3. CHECK FOR SHORT TO +B 
    1. Disconnect the jN2 No. 1 parking brake wire assembly connector.
    2. Disconnect the A48 parking brake ECU (brake actuator assembly) connector.
    3. Measure the voltage according to the value(s) in the table below.
      GTY1086705Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector *b (to Parking Brake ECU (Brake Actuator Assembly))
      *c (to No. 1 Parking Brake Wire Assembly) - -

      Standard Voltage

      Tester Connection Condition Specified Condition
      jN2-1 or A48-4 (MRR+) - Body ground Always Below 1 V
      jN2-2 or A48-3 (MRR-) - Body ground Always Below 1 V

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE PARKING BRAKE ECU (BRAKE ACTUATOR ASSEMBLY). Refer to  REMOVAL [10/2018 - 07/2022]  , or refer to  REMOVAL [07/2022 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR