LIGHTING SYSTEM Front Door Courtesy Switch Circuit

DTC Code DTC Name
Front Door Courtesy Switch Circuit

DESCRIPTION

The main body ECU (multiplex network body ECU) detects the condition of the front door courtesy light switch assembly.

WIRING DIAGRAM

E235090E05

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 Data List according to the display on the GTS.

      Body Electrical > Main Body > Data List

      Tester Display

      Measurement Item

      Range

      Normal Condition

      Diagnostic Note

      FR Door Courtesy SW

      Front door courtesy light switch assembly (RH) signal

      ON or OFF

      ON: Front door RH open

      OFF: Front door RH closed

      -

      FL Door Courtesy SW

      Front door courtesy light switch assembly (LH) signal

      ON or OFF

      ON: Front door LH open

      OFF: Front door LH closed

      -

      Body Electrical > Main Body > Data List

      Tester Display

      FR Door Courtesy SW

      FL Door Courtesy 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 here

    NG

  2. INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (LH/RH)

    1. Remove the front door courtesy light switch assembly.

      Click here

    2. Inspect the front door courtesy light switch assembly.

      Click here

      OK

      Front door courtesy light switch assembly is normal.

      Result

      Result

      Proceed to

      OK (for LH)

      A

      OK (for RH)

      B

      NG

      C
    B

    CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (RH) - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))Click here

    C

    REPLACE FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY

    Click here

    A

  3. CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (LH) - 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

      L1-1 - 3E-25

      Always

      Below 1 Ω

      L1-1 - 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.

    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.

      E258622C04

      *a

      Component without harness connected

      (Instrument Panel Junction Block Assembly)

      -

      -

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      3E-25 - MB-2 (FLCY)

      Always

      Below 1 Ω

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

  5. CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (RH) - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))

    1. Disconnect the E22 main body ECU (multiplex network body ECU) connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      L26-1 - E22-19 (FRCY)

      Always

      Below 1 Ω

      L26-1 - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR