NAVIGATION SYSTEM Parking Brake Switch Circuit

DTC Code DTC Name
Parking Brake Switch Circuit

DESCRIPTION

This circuit includes the parking brake switch assembly and radio and display receiver assembly.

WIRING DIAGRAM

E280960E24

CAUTION / NOTICE / HINT

Note:

Check that the wire harness is properly installed and does not have any sharp bends, pinching or loose connections (Click here).

PROCEDURE

  1. CHECK VEHICLE SIGNAL (OPERATION CHECK)

    1. E278090

      Display the "Vehicle Signal Check Mode" screen (Click here).

    2. Check that the display changes between ON and OFF according to the parking brake operation.

      OK

      Parking Brake Condition

      Display

      Applied

      ON

      Released

      OFF
      Tip:

      This display is updated once per second. As a result, it is normal for the display to lag behind the actual parking brake operation.

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    (Click here)

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

    1. Disconnect the H105 radio and display receiver assembly connector.

    2. Disconnect the H17 parking brake switch assembly connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      H105-15 (PKB) - H17-1

      Always

      Below 1 Ω

      H105-15 (PKB) - Body ground

      Always

      10 kΩ or higher

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  3. INSPECT PARKING BRAKE SWITCH ASSEMBLY

    1. Remove the parking brake switch assembly (Click here).

    2. Inspect the parking brake switch assembly (Click here).

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    (Click here)

    REPLACE PARKING BRAKE SWITCH ASSEMBLY

    (Click here)