NAVIGATION SYSTEM Parking Brake Switch Circuit

DESCRIPTION

This circuit is from the parking brake switch assembly to the navigation receiver assembly.

WIRING DIAGRAM

A003SQ9E50

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK BRAKE WARNING LIGHT


    1. Check that the brake warning light comes on when the parking brake is applied and goes off when it is released.

      OK
      The brake warning light operates as specified above.

    NG

    INSPECT PARKING BRAKE SWITCH ASSEMBLY Click here

    OK

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


    1. Disconnect the E35 navigation receiver assembly connector.

    2. Disconnect the E12 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
      E35-1 (PKB) - E12-1 Always Below 1 Ω
      E35-1 (PKB) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE NAVIGATION RECEIVER ASSEMBLY Click here

  3. INSPECT PARKING BRAKE SWITCH ASSEMBLY


    1. A003T8VE01

      Disconnect the E12 parking brake switch assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Switch connector - Switch body ON (When shaft is not pressed) Below 1 Ω
      Switch connector - Switch body OFF (When shaft is pressed) 10 kΩ or higher

    NG

    REPLACE PARKING BRAKE SWITCH ASSEMBLY Click here

    OK

    REPAIR OR REPLACE HARNESS OR CONNECTOR