NAVIGATION SYSTEM Parking Brake Switch Circuit

DESCRIPTION

This circuit is from the skid control ECU (brake actuator assembly) to the radio and display receiver assembly.

WIRING DIAGRAM

A001PYCE01
*a Parking Brake ECU Assembly
*b Radio and Display Receiver Assembly

PROCEDURE


  1. CHECK ELECTRIC PARKING BRAKE SYSTEM


    1. Check the operation of the electric parking brake.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    GO TO ELECTRIC PARKING BRAKE SYSTEM Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (PARKING BRAKE ECU ASSEMBLY - RADIO AND DISPLAY RECEIVER ASSEMBLY)


    1. Disconnect the F125 radio and display receiver assembly connector.

    2. Disconnect the M70 parking brake ECU assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E125-15 (PKB) - M70-5 (PKB) Always Below 1 Ω
      E125-15 (PKB) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR