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Home >> Toyota >> 2020 >> Avalon Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 82 (Electric Parking System - Diagnostic Codes & Symptom 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

WARNING: This page is about a different variant/trim than selected.
  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 Y4 parking brake actuator assembly RH connector.
    4. Measure the voltage according to the value(s) in the table below.
      GTY1026488Courtesy 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
      Y4-2 (RE+) - Y4-1 (RE-) Electric parking brake not operating Below 1 V

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE PARKING BRAKE ACTUATOR ASSEMBLY RH. Refer to  REMOVAL [04/2018 -] 

    Result: 

    NG 

    See step  2

  2. CHECK FOR SHORT TO +B 
    1. Disconnect the YK1 No. 1 parking brake wire assembly connector.
    2. Measure the voltage according to the value(s) in the table below.
      GTY1026825Courtesy 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
      YK1-2 - YK1-1 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  3

  3. CHECK FOR SHORT TO +B 
    1. Disconnect the YK1 No. 1 parking brake wire assembly connector.
    2. Disconnect the A39 parking brake ECU (brake actuator assembly) connector.
    3. Measure the voltage according to the value(s) in the table below.
      GTY1026452Courtesy 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
      YK1-2 or A39-4 (MRR+) - Body ground Always Below 1 V
      YK1-1 or A39-3 (MRR-) - Body ground Always Below 1 V

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE PARKING BRAKE ECU (BRAKE ACTUATOR ASSEMBLY). Refer to  REMOVAL [08/2021 -] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR