NAVIGATION SYSTEM(for Radio and Display Type) Parking Brake Switch Circuit

DESCRIPTION

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

WIRING DIAGRAM

B001FJME22
*a Parking Brake Switch Assembly
*b Radio and Display Receiver Assembly

PROCEDURE


  1. CHECK VEHICLE SIGNAL (OPERATION CHECK)


    1. B001I4B

      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

      Tech Tips

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


    OK

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

    NG

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


    1. Disconnect the H51 radio and display receiver assembly connector.

    2. Disconnect the G77 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
      H51-15 (PKB) - G77-1 Always Below 1 Ω
      H51-15 (PKB) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT PARKING BRAKE SWITCH ASSEMBLY


    1. Remove the parking brake switch assembly Click here.

    2. Inspect the parking brake switch assembly Click here.


    OK

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

    NG

    REPLACE PARKING BRAKE SWITCH ASSEMBLY Click here