LIGHTING SYSTEM Parking Brake Switch Circuit

DTC Code DTC Name
Parking Brake Switch Circuit

DESCRIPTION

The main body ECU (multiplex network body ECU) detects the condition of the parking brake switch assembly.

WIRING DIAGRAM

B242655E06

PROCEDURE

  1. READ VALUE USING GTS

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Main Body / Data List.

    5. Read the display on the GTS.

      Body Electrical > Main Body > Data List

      Tester Display

      Measurement Item

      Range

      Normal Condition

      Diagnostic Note

      Parking Brake SW

      Parking brake switch signal

      ON or OFF

      ON: Parking brake switch on

      OFF: Parking brake switch off

      -

      Body Electrical > Main Body > Data List

      Tester Display

      Parking Brake SW

      OK

      Normal conditions listed above are displayed.

    Result

    Proceed to

    OK

    NG
    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    Click hereClick hereClick hereClick hereClick here

    NG

  2. INSPECT PARKING BRAKE SWITCH ASSEMBLY

    1. Remove the parking brake switch assembly.

      Click hereClick here

    2. Inspect the parking brake switch assembly.

      Click here

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE PARKING BRAKE SWITCH ASSEMBLY

    Click hereClick here

    OK

  3. CHECK HARNESS AND CONNECTOR (PARKING BRAKE SWITCH ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

    1. Disconnect the 3E instrument panel junction block assembly connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      L18-1 - 3E-27

      Always

      Below 1 Ω

      L18-1 - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

    1. Remove the instrument panel junction block assembly.

      for LHD:Click hereClick here

      for RHD:Click hereClick here

    2. Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.

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

      E259633C01

      *a

      Component without harness connected

      (Instrument Panel Junction Block Assembly)

      -

      -

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      3E-27 - MB-12 (PKB)

      Always

      Below 1 Ω

      3E-27 - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

    for LHD:Click hereClick here

    for RHD:Click hereClick here

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

    for LHD:Click hereClick here

    for RHD:Click hereClick here