LIGHTING SYSTEM Door Courtesy Switch Circuit

DESCRIPTION

The main body ECU receives a door open/closed signal from each door courtesy switch.

WIRING DIAGRAM

A0118YVE01

INSPECTION PROCEDURE

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the tester on.

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

    5. According to the display on the tester, read the Data List.

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

      ON: Back door is open

      OFF: Back door is closed

      		 -
      FR Door Courtesy SW Front RH door courtesy switch signal/ ON or OFF

      ON: Front RH door is open

      OFF: Front RH door door is closed

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

      ON: Front LH door is open

      OFF: Front LH door is closed

      		 -
      OK
      Normal conditions listed above are displayed.

    NG

    INSPECT DOOR COURTESY SWITCH Click here

    OK

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

  2. INSPECT DOOR COURTESY SWITCH


    1. Inspect the front door courtesy light switch Click here, back door courtesy switch Click here.

      OK
      Door courtesy switches are normal.
      Result
      Result Proceed to
      OK A
      NG (Front door courtesy light switch) B
      NG (Back door courtesy switch) C

    B

    REPLACE FRONT DOOR COURTESY LIGHT SWITCH Click here

    C

    REPLACE BACK DOOR LOCK ASSEMBLY Click here

    A

  3. CHECK HARNESS AND CONNECTOR (DOOR COURTESY SWITCH - JUNCTION BLOCK AND BODY GROUND)


    1. A01174XE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Instrument Panel Junction Block)
      *2

      Front view of wire harness connector

      (to Front Door Courtesy Light Switch)
      *3

      Front view of wire harness connector

      (to Back Door Lock Assembly)
      *4 Front RH
      *5 Front LH

      Disconnect the 3E instrument panel junction block connector.

    2. Disconnect G1 and G2 front door courtesy light switch connector.

    3. Disconnect the J3 back door lock assembly connector.

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

      Standard Resistance
      Front RH Side
      Tester Connection Condition Specified Condition
      3E-35 - G1-1 Always Below 1 Ω
      G1-1 - Body ground Always 10 kΩ or higher
      Front LH Side
      Tester Connection Condition Specified Condition
      3E-24 - G2-1 Always Below 1 Ω
      G2-1 - Body ground Always 10 kΩ or higher
      Back Door
      Tester Connection Condition Specified Condition
      3E-27 - J3-3 Always Below 1 Ω
      J3-3 - Body ground Always 10 kΩ or higher
      J3-1 - Body ground Always Below 1 Ω

    5. Reconnect the instrument panel junction block connector.

    6. Reconnect front door courtesy light switch connector.

    7. Reconnect the back door lock assembly connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK - MAIN BODY ECU)


    1. A01195AE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Instrument Panel Junction Block)
      *2

      Front view of wire harness connector

      (to Main Body ECU)

      Disconnect the 3C instrument panel junction block connector.

    2. Disconnect the D42 main body ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      3C-30 - D42-19 (BCTY) Always Below 1 Ω
      3C-30 or D42-19 (BCTY) - Body ground Always 10 kΩ or higher

    4. Reconnect the instrument panel junction block connector.

    5. Reconnect the main body ECU connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. REPLACE MAIN BODY ECU


    1. Temporarily replace the main body ECU with a new or normally functioning one Click here.


    NEXT

  6. READ VALUE USING INTELLIGENT TESTER


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the tester on.

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

    5. According to the display on the tester, read the Data List.

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

      ON: Back door is open

      OFF: Back door is closed

      		 -
      FR Door Courtesy SW Front RH door courtesy switch signal/ ON or OFF

      ON: Front RH door is open

      OFF: Front RH door door is closed

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

      ON: Front LH door is open

      OFF: Front LH door is closed

      		 -
      OK
      Normal conditions listed above are displayed.

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK

    OK

    END (MAIN BODY ECU IS DEFECTIVE)