LIGHTING SYSTEM Front Door Courtesy Switch Circuit

DESCRIPTION

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

WIRING DIAGRAM

A00444HE02

INSPECTION PROCEDURE

PROCEDURE


  1. READ VALUE USING GTS


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

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

    5. Read the display on the GTS.

      Main Body
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      FR Door Courtesy SW Front door courtesy light switch RH signal/ON or OFF

      ON: Front door RH open

      OFF: Front door RH closed

      		 -
      FL Door Courtesy SW Front door courtesy light switch LH signal/ON or OFF

      ON: Front door LH open

      OFF: Front door LH closed

      		 -
      OK
      Normal conditions listed above are displayed.
      Result
      Result Proceed to
      OK A
      Front door courtesy light switch LH or RH does not operate B

    B

    INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (LH OR RH) Click here

    A

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

  2. INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (LH OR 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.

    NG

    REPLACE FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY)


    1. for Front LH


      1. Disconnect the 2D instrument panel junction block assembly connector.

      2. Disconnect the R6 front door courtesy light switch assembly LH connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        2D-35 - R6-1 Always Below 1 Ω
        2D-35 - Body ground Always 10 kΩ or higher

    2. for Front RH


      1. Disconnect the 2D instrument panel junction block assembly connector.

      2. Disconnect the S6 front door courtesy light switch assembly RH connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        2D-36 - S6-1 Always Below 1 Ω
        2D-36 - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY


    1. A004471E18
      Text in Illustration
      *a

      Component without harness connected

      (Instrument Panel Junction Block Assembly)

      for Front LH


      1. Remove the instrument panel junction block assembly Click here.

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

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        2D-35 - MB-2 (FLCY) Always Below 1 Ω
    2. A004471E19
      Text in Illustration
      *a

      Component without harness connected

      (Instrument Panel Junction Block Assembly)

      for Front RH


      1. Remove the instrument panel junction block assembly Click here.

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

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        2D-36 - MB-4 (FRCY) Always Below 1 Ω

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

    OK

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here