NAVIGATION SYSTEM (for HDD) Parking Brake Switch Circuit

DESCRIPTION

This circuit includes the parking brake switch and the display and navigation module display.

WIRING DIAGRAM

A0096ZOE05

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK PARKING BRAKE SWITCH ASSEMBLY (DISPLAY CHECK MODE)


    1. A009880E16

      Enter the "Display Check" mode and select "Vehicle Signal Check" 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.


    NG

    CHECK HARNESS AND CONNECTOR (DISPLAY AND NAVIGATION MODULE DISPLAY - PARKING BRAKE SWITCH) Click here

    OK

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

  2. CHECK HARNESS AND CONNECTOR (DISPLAY AND NAVIGATION MODULE DISPLAY - PARKING BRAKE SWITCH)


    1. Disconnect the H4 display and navigation module display 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
      H4-17 (PKB) - G77-1 Always Below 1 Ω
      H4-17 (PKB) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT PARKING BRAKE SWITCH ASSEMBLY


    1. A009723E03
      Text in Illustration
      *a Released
      *b Pushed in

      Remove the parking brake switch assembly Click here.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      1 - Body ground Parking brake switch on (Switch pin released) Below 1 Ω
      Parking brake switch off (Switch pin pushed in) 10 kΩ or higher

    NG

    REPLACE PARKING BRAKE SWITCH ASSEMBLY Click here

    OK

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