ELECTRIC PARKING BRAKE SYSTEM, Diagnostic DTC:C13A6/42

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

DESCRIPTION

The parking brake cable tightening/loosening operation is performed by the parking brake actuator's motor.

DTC Code Detection Condition Trouble Area
C13A6/42

Both of following conditions are met:


  1. Electric parking brake ECU is ON (power switch is ON (IG), or 15 seconds after power switch is OFF and electric parking brake switch lock control is operating)

  2. Power supply voltage and +B voltage are normal, but motor circuit is malfunctioning for approx. 1 second

  • Parking brake with bracket actuator assembly

  • Harness or connector

  • Electric parking brake ECU

WIRING DIAGRAM

A01H0ZME02

INSPECTION PROCEDURE

Note


  • If the electric parking brake ECU or parking brake with bracket actuator assembly is replaced, perform the "RESET MEMORY" and "ACQUIRE TENSION SENSOR ZERO POINT" procedures Click here.

  • Even after the power switch is turned OFF, the electric parking brake ECU may store a DTC as a result of removing a connector or fuse, as the ECU is still operating. Therefore, during inspection or replacement, turn the power switch OFF and wait for 20 seconds before removing the following: 1) connectors of the electric parking brake ECU, and 2) fuses of the electric parking brake system circuit.

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (ECU - ACTUATOR)


    1. Disconnect the S46 ECU connector.

    2. Disconnect the S32 actuator connector.

    3. A01GWFXE05

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

      Standard resistance
      Tester Connection Condition Specified Condition
      S46-1 (M-) - S32-7 (M-) Always Below 1 Ω
      S46-1 (M-) - Body ground Always 10 kΩ or higher
      S46-2 (M+) - S32-8 (M+) Always Below 1 Ω
      S46-2 (M+) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. CHECK PARKING BRAKE WITH BRACKET ACTUATOR ASSEMBLY (MOTOR)


    1. Disconnect the S32 actuator connector.

    2. A01GY4UE07

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

      Standard resistance
      Tester Connection Condition Specified Condition
      7 (M-) - 8 (M+) Always Below 4 Ω
      7 (M-) - Body ground Always 10 kΩ or higher

    NG

    REPLACE PARKING BRAKE WITH BRACKET ACTUATOR ASSEMBLY Click here

    OK

    REPLACE ELECTRIC PARKING BRAKE ECU Click here