ELECTRIC PARKING BRAKE SYSTEM, Diagnostic DTC:C13A6/42

DTC Code DTC Name
C13A6/42 Open or Short in Circuit of Motor

DESCRIPTION

DTC No. Detection Item DTC Detection Condition Trouble Area Memory Note
C13A6/42 Open or Short in Circuit of Motor

Both of following conditions are met:


  1. Power switch on (IG) or electric parking brake switch (electric parking brake switch assembly) pulled to lock side with power switch off.

  2. Power supply voltage and +B voltage are normal, but parking brake motor circuit is malfunctioning for approximately 1 to 2 seconds.

  • Parking brake actuator assembly

  • Wire harness or connector

  • Parking brake ECU assembly

 DTC stored An electric parking brake system malfunction is displayed on the multi-information display.
DTC Detection Conditions
Vehicle Condition
Pattern 1 Pattern 2
Diagnosis Condition Power switch on (IG) ○ -
Electric parking brake switch (electric parking brake switch assembly) pulled to lock side with power switch off - ○
Malfunction Status Power supply voltage and +B voltage are normal, but motor circuit is malfunctioning ○ ○
Detection Time Approximately 1 to 2 second Approximately 1 to 2 second
Number of Trips 1 trip 1 trip

Tech Tips

DTC will be output when conditions for either of the patterns in the table above are met.

WIRING DIAGRAM

A001RIIE13

CAUTION / NOTICE / HINT

Note


  • The electric parking brake may still operate up to 20 seconds after the power switch is turned off. 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 (electric parking brake switch assembly) as the parking brake indicator light blinks (red) when the power switch is first turned on (IG).

PROCEDURE


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


    1. Turn the power switch off.

    2. Connect the GTS to the DLC3.

    3. Turn the power switch on (IG).

    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 > Electric Parking Brake > 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 OK -
      Permission of LH Interlocking PKB Lock Parking brake actuator assembly RH parking brake lock control permission status OK or NG OK -

      Chassis > Electric Parking Brake > 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

    A001S1PC03
    *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 (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 M70 parking brake ECU 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
      M70-1 (MRR+) - d2-2 (MRR+) Always Below 1 Ω
      M70-3 (MRR-) - d2-1 (MRR-) Always Below 1 Ω
      M70-1 (MRR+) or d2-2 (MRR+) - Body ground Always 10 kΩ or higher
      M70-3 (MRR-) or d2-1 (MRR-) - Body ground Always 10 kΩ or higher
      LH
      Tester Connection Condition Specified Condition
      M70-4 (MRL+) - e2-2 (MRL+) Always Below 1 Ω
      M70-6 (MRL-) - e2-1 (MRL-) Always Below 1 Ω
      M70-4 (MRL+) or e2-2 (MRL+) - Body ground Always 10 kΩ or higher
      M70-6 (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
      Proceed to
      OK
      NG

    OK

    REPLACE PARKING BRAKE ECU ASSEMBLY Click here

    NG

    REPLACE PARKING BRAKE ACTUATOR ASSEMBLY Click here