NAVIGATION SYSTEM Parking Brake Switch Circuit

DESCRIPTION

This circuit is from the parking brake switch assembly to the radio and display receiver assembly.

WIRING DIAGRAM

A005L96E01
*a Parking Brake Switch Assembly
*b Radio and Display Receiver Assembly

PROCEDURE


  1. CHECK VEHICLE SIGNAL (OPERATION CHECK)


    1. A005GLV

      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 (PARKING BRAKE SWITCH ASSEMBLY - RADIO AND DISPLAY RECEIVER ASSEMBLY)


    1. Disconnect the F47 radio and display receiver assembly connector.

    2. Disconnect the A26 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
      F47-15 (PKB) - A26-1 Always Below 1 Ω
      F47-15 (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