ELECTRIC PARKING BRAKE SYSTEM Electric Parking Brake System AUTO Function Circuit

DESCRIPTION

The parking brake ECU assembly receives shift position information from the hybrid vehicle control ECU assembly via CAN communication. Also, the parking brake ECU assembly receives wheel speed information and stop light switch information from the skid control ECU assembly.

The electric parking brake system AUTO control (shift-linked) function automatically releases the parking brake when the following conditions are met: 1) Power switch on (IG), 2) brake pedal depressed, and 3) shift state changed from P. Also, when the shift state changed to P with the vehicle in this condition, the function automatically locks the parking brake.

WIRING DIAGRAM

B000RHOE09

CAUTION / NOTICE / HINT

Note

If the parking brake ECU assembly is replaced, perform the "Reset Memory" and "Acquire Tension Sensor Zero Point" procedures.

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PROCEDURE


  1. CHECK DTC (ELECTRONICALLY CONTROLLED BRAKE SYSTEM)


    1. Check the electronically controlled brake system DTCs and check if speed sensor system or stop light switch system DTCs are stored.

      Click here


      Chassis > ABS/VSC/TRC > Trouble Codes
      Result
      Result Proceed to
      DTC is not output A
      DTC is output B

    B

    GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM Click here

    A

  2. CHECK DTC (ELECTRONIC SHIFT LEVER SYSTEM)


    1. Check the DTCs for any electronic shift lever system malfunctions.

      Click here


      Powertrain > Hybrid Control > Trouble Codes
      Result
      Result Proceed to
      DTC is not output A
      DTC is output B

    A

    REPLACE PARKING BRAKE ECU ASSEMBLY Click here

    B

    GO TO ELECTRONIC SHIFT LEVER SYSTEM Click here