ELECTRIC PARKING BRAKE SYSTEM, Diagnostic DTC:C13A6

DTC Code DTC Name
C13A6 Open or Short Circuit in Motor

DESCRIPTION

DTC No. Detection Item DTC Detection Condition Trouble Area Memory Note
C13A6 Open or Short Circuit in Motor Parking brake actuator assembly open or short circuit is detected for 0.015 seconds or more.

  • Parking brake actuator assembly

  • Wire harness or connector

  • Skid control ECU (brake actuator assembly)

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

WIRING DIAGRAM

A005OX8E12

CAUTION / NOTICE / HINT

Note


  • The electric parking brake may still operate up to 20 seconds after the ignition switch is turned off. Before disconnecting connectors or fuses, turn the ignition switch off and wait 20 seconds or more.

  • When replacing the skid control ECU (brake actuator assembly), operate the electric parking brake switch (electric parking brake switch assembly) as the parking brake indicator light blinks (red) when the ignition switch is first turned to ON.

PROCEDURE


  1. READ VALUE USING GTS (PERMISSION OF RH INTERLOCKING PKB LOCK / PERMISSION OF LH INTERLOCKING PKB LOCK)


    1. Turn the ignition switch off.

    2. Connect the GTS to the DLC3.

    3. Turn the ignition switch to ON.

    4. Turn the GTS on.

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

    6. Read the Data List according to the display on the GTS.


      Chassis > ABS/VSC/TRC/EPB > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Permission of RH Interlocking PKB Lock Parking brake actuator assembly RH parking brake lock control permission status OK or NG - -
      Permission of LH Interlocking PKB Lock Parking brake actuator assembly LH parking brake lock control permission status OK or NG - -

      Chassis > ABS/VSC/TRC/EPB > Data List
      Tester Display
      Permission of RH Interlocking PKB Lock
      Permission of LH Interlocking PKB Lock
      Result
      Proceed to
      NEXT

    NEXT

  2. INSPECT PARKING BRAKE WIRE ASSEMBLY

    A005QF7C03
    *a Front view of Parking Brake Wire Assembly *b (to wire harness connector)
    *c (to Parking Brake Actuator Assembly) *d RH
    *e LH - -

    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 in the wire harness or a short to ground.

    3. Inspect the parking brake wire assembly.

      Standard Resistance
      RH
      Tester Connection Condition Specified Condition
      dM2-2 (MRR-) - d2-1 (MRR-) Always Below 1 Ω
      dM2-2 (MRR-) - d2-2 (MRR+) Always 10 kΩ or higher
      dM2-2 (MRR-) or d2-1 (MRR-) - Body ground Always 10 kΩ or higher
      dM2-1 (MRR+) - d2-2 (MRR+) Always Below 1 Ω
      dM2-1 (MRR+) - d2-1 (MRR-) Always 10 kΩ or higher
      dM2-1 (MRR+) or d2-2 (MRR+) - Body ground Always 10 kΩ or higher
      LH
      Tester Connection Condition Specified Condition
      eM2-2 (MRL-) - e2-1 (MRL-) Always Below 1 Ω
      eM2-2 (MRL-) - e2-2 (MRL+) Always 10 kΩ or higher
      eM2-2 (MRL-) or e2-1 (MRL-) - Body ground Always 10 kΩ or higher
      eM2-1 (MRL+) - e2-2 (MRL+) Always Below 1 Ω
      eM2-1 (MRL+) - e2-1 (MRL-) Always 10 kΩ or higher
      eM2-1 (MRL+) or e2-2 (MRL+) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE PARKING BRAKE WIRE ASSEMBLY Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) - PARKING BRAKE ACTUATOR ASSEMBLY)


    1. Turn the ignition switch off.

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

    3. Disconnect the A42 skid control ECU (brake actuator assembly) connector.

    4. Disconnect the d2 or e2 parking brake actuator assembly connector.

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

      Standard Resistance
      RH
      Tester Connection Condition Specified Condition
      A42-2 (MRR+) - d2-2 (MRR+) Always Below 1 Ω
      A42-3 (MRR+) - d2-1 (MRR-) Always Below 1 Ω
      A42-2 (MRR+) or d2-2 (MRR+) - Body ground Always 10 kΩ or higher
      A42-2 (MRR+) or d2-1 (MRR-) - Body ground Always 10 kΩ or higher
      LH
      Tester Connection Condition Specified Condition
      A42-13 (MRL+) - e2-2 (MRL+) Always Below 1 Ω
      A42-12 (MRL-) - e2-1 (MRL-) Always Below 1 Ω
      A42-13 (MRL+) or e2-2 (MRL+) - Body ground Always 10 kΩ or higher
      A42-12 (MRL-) or e2-1 (MRL-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT PARKING BRAKE ACTUATOR ASSEMBLY


    1. Inspect the parking brake actuator assembly.

      Click here

      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

    A

    REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) Click here

    B

    REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) Click here

    C

    REPLACE PARKING BRAKE ACTUATOR ASSEMBLY Click here