ELECTRIC PARKING BRAKE SYSTEM, Diagnostic DTC:C13A7/43

DTC Code DTC Name
C13A7/43 Actuator Malfunction

DESCRIPTION

DTC No. Detection Item DTC Detection Condition Trouble Area Memory Note
C13A7/43 Actuator Malfunction

Both of following conditions are met:


  1. Electric parking brake is operating

  2. One of following is detected: Motor lock, gear lock, spinning, repeated slipping

  • Parking brake actuator assembly

  • Rear brake

  • Wire harness or connector

 Yes An electric parking brake system malfunction is displayed on the multi-information display.

WIRING DIAGRAM

Click here

CAUTION / NOTICE / HINT

Note


  • This DTC may be stored when the system changes to pad replacement mode, but this is not a malfunction.

  • This DTC may be stored when the parking brake is forcibly released, but this is not a malfunction.

  • Before disconnecting connectors or fuses, turn the power switch off and wait 20 seconds or more.

  • When replacing the parking brake ECU assembly, operate the electric parking brake switch (integration control and panel assembly), as the parking brake indicator light (red) blinks when the power switch is first turned on (IG).

PROCEDURE


  1. CHECK DTC


    1. Check if DTCs other than C13A7/43 are output.

      Click here


      Chassis > Electric Parking Brake > Trouble Codes
      Result
      Proceed to
      DTC C13A7/43 is not output
      DTC C13A7/43 is output

    DTC C13A7/43 is output

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    DTC C13A7/43 is not output

  2. READ VALUE USING GTS (RH ACTUATOR MALFUNCTION(LOCK)/RH ACTUATOR MALFUNCTION(SPIN)/LH ACTUATOR MALFUNCTION(LOCK)/LH ACTUATOR MALFUNCTION(SPIN))


    1. Turn the power switch off.

    2. Connect the GTS to the DLC3.

    3. Turn the power switch on (IG) and the GTS on.

    4. Enter the following menus: Chassis / Electric Parking Brake / Data List.

    5. Check the values by referring to the table below.


      Chassis > Electric Parking Brake > Data List
      Tester Display Measurement Item Range Normal Condition
      RH Actuator Malfunction(Lock) Parking brake actuator assembly RH lock detection malfunction details are displayed Detected Malfunction or No Detected Malfunction No Detected Malfunction
      RH Actuator Malfunction(Spin) Parking brake actuator assembly RH spinning malfunction details are displayed Detected Malfunction or No Detected Malfunction No Detected Malfunction
      LH Actuator Malfunction(Lock) Parking brake actuator assembly LH lock detection malfunction details are displayed Detected Malfunction or No Detected Malfunction No Detected Malfunction
      LH Actuator Malfunction(Spin) Parking brake actuator assembly LH spinning malfunction details are displayed Detected Malfunction or No Detected Malfunction No Detected Malfunction

      Chassis > Electric Parking Brake > Data List
      Tester Display
      RH Actuator Malfunction(Lock)
      RH Actuator Malfunction(Spin)
      LH Actuator Malfunction(Lock)
      LH Actuator Malfunction(Spin)
      Result
      Proceed to
      NEXT

    NEXT

  3. INSPECT PARKING BRAKE WIRE ASSEMBLY NO.1

    B002KUAC01
    *1 Parking Brake Wire Assembly - -
    *A RH *B LH
    *a Male connector - -

    1. Remove the parking brake wire assembly.

      Click here

    2. Check the parking brake wire assembly for damage.

      OK
      No damage.

      Tech Tips

      If damaged, there may be a short between the wire harnesses or a short to ground.

    3. Inspect the parking brake wire assembly.

      Standard Resistance
      LH
      Tester Connection Condition Specified Condition
      tm1 (Male connector)-1 - m2-2 (MRL+) Always Below 1 Ω
      tm1 (Male connector)-3 - m2-1 (MRL-) Always Below 1 Ω
      tm1 (Male connector)-1 - m2-1 (MRL-) Always 10 kΩ or higher
      tm1 (Male connector)-3 - m2-2 (MRL+) Always 10 kΩ or higher
      tm1 (Male connector)-1 - tm1 (Male connector)-3 Always 10 kΩ or higher
      tm1 (Male connector)-1 - tm1 (Male connector)-2 Always 10 kΩ or higher
      tm1 (Male connector)-1 - tm1 (Male connector)-4 Always 10 kΩ or higher
      tm1 (Male connector)-3 - tm1 (Male connector)-2 Always 10 kΩ or higher
      tm1 (Male connector)-3 - tm1 (Male connector)-4 Always 10 kΩ or higher
      RH:
      Tester Connection Condition Specified Condition
      tm1 (Male connector)-2 - m1-2 (MRR+) Always Below 1 Ω
      tm1 (Male connector)-4 - m1-1 (MRR-) Always Below 1 Ω
      tm1 (Male connector)-2 - m1-1 (MRR-) Always 10 kΩ or higher
      tm1 (Male connector)-4 - m1-2 (MRR+) Always 10 kΩ or higher
      tm1 (Male connector)-2 - tm1 (Male connector)-4 Always 10 kΩ or higher
      tm1 (Male connector)-2 - tm1 (Male connector)-1 Always 10 kΩ or higher
      tm1 (Male connector)-2 - tm1 (Male connector)-3 Always 10 kΩ or higher
      tm1 (Male connector)-4 - tm1 (Male connector)-1 Always 10 kΩ or higher
      tm1 (Male connector)-4 - tm1 (Male connector)-3 Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE PARKING BRAKE WIRE ASSEMBLY NO.1 Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (PARKING BRAKE ECU ASSEMBLY - PARKING BRAKE ACTUATOR ASSEMBLY)


    1. Turn the power switch off.

    2. Make sure the parking brake wire assembly is securely installed.

    3. Disconnect the Q25 parking brake ECU assembly connector.

    4. Disconnect the m1 and/or m2 parking brake actuator assembly connector.

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

      Standard Resistance
      LH
      Tester Connection Condition Specified Condition
      Q25-4 (MRL+) - m2-2 (MRL+) Always Below 1 Ω
      Q25-6 (MRL-) - m2-1 (MRL-) Always Below 1 Ω
      Q25-4 (MRL+) or m2-2 (MRL+) - Body ground Always 10 kΩ or higher
      Q25-6 (MRL-) or m2-1 (MRL-) - Body ground Always 10 kΩ or higher
      RH
      Tester Connection Condition Specified Condition
      Q25-1 (MRR+) - m1-2 (MRR+) Always Below 1 Ω
      Q25-3 (MRR-) - m1-1 (MRR-) Always Below 1 Ω
      Q25-1 (MRR+) or m1-2 (MRR+) - Body ground Always 10 kΩ or higher
      Q25-3 (MRR-) or m1-1 (MRR-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. INSPECT REAR BRAKE AND PARKING BRAKE ACTUATOR ASSEMBLY


    1. Enter rear brake pad replacement mode.

      Click here

    2. Turn the power switch off.

    3. Check whether there is a rotation system stuck malfunction or the actuator is spinning.


      1. Check whether the parking brake actuator assembly is installed properly to the rear brake caliper and that it is not spinning.

        For the parking brake actuator assembly removal procedure: Click here

      2. Check whether there is any damage to the rotation transmission part from the parking brake actuator assembly to the rear brake caliper.

      3. Inspect the parking brake actuator assembly and check that it operates.

        Click here

      4. Check that the rear brake caliper threaded portion rotates and that the rear disc brake piston can move outward.

        Tech Tips

        For the check procedures, refer to the parking brake emergency release method when not using the GTS.

        Click here

      Tech Tips

      Return to normal mode after work is complete.

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE PARKING BRAKE ACTUATOR ASSEMBLY Click here

    NG

    REPAIR OR REPLACE NECESSARY PARTS