NAVIGATION SYSTEM(except Sedan) Parking Brake Switch Circuit

DESCRIPTION

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

WIRING DIAGRAM

A01T8EDE71
*a Parking Brake Switch Assembly
*b Radio and Display Receiver Assembly

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.
      Result
      Result Proceed to
      OK A
      NG (for Anti-lock Brake System) B
      NG (for Vehicle Stability Control System) C

    B

    GO TO BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS (for Anti-lock Brake System) Click here

    C

    GO TO BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS (for Vehicle Stability Control System) Click here

    A

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


    1. Disconnect the E90 radio and display receiver assembly connector.

    2. Disconnect the L18 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
      E90-6 (PKB) - L18-1 Always Below 1 Ω
      E90-6 (PKB) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR