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LIGHTING SYSTEM Door Courtesy Switch Circuit

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DTC Code DTC Name
  Door Courtesy Switch Circuit
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DESCRIPTION

The main body ECU receives courtesy switch signals to control the illuminated entry system.

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WIRING DIAGRAM


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  1. A01CDZLE01

    for RHD

  2. A01CDO4E01

    for LHD

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INSPECTION PROCEDURE

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PROCEDURE


  1. Click here

    READ VALUE USING INTELLIGENT TESTER


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the intelligent tester on.

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

    5. Read the display on the intelligent tester.

      Table 1. Main Body
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      D door Courtesy SW Driver side door courtesy switch signal/ON or OFF

      ON: Driver side door open

      OFF: Driver side door closed

      		 -
      P door Courtesy SW Front passenger side door courtesy switch signal/ON or OFF

      ON: Front passenger side door open

      OFF: Front passenger side door closed

      		 -
      RR door Courtesy SW Slide door courtesy switch RH signal/ON or OFF

      ON: Slide door RH open

      OFF: Slide door RH closed

      		 -
      RL door Courtesy SW Slide door courtesy switch LH signal/ON or OFF

      ON: Slide door LH open

      OFF: Slide door LH closed

      		 -
      Back door Courtesy SW Back door Courtesy switch signal/ON or OFF

      ON: Back door open

      OFF: Back door closed

      		 -
      OK
      Normal conditions listed above are displayed.

  2. Click here

    INSPECT COURTESY SWITCH


    1. Inspect the front door courtesy switches (Click here).

    2. Inspect the slide door courtesy switches (Click here).

    3. Inspect the back door courtesy switch (Click here).

      OK
      Door courtesy switches are normal.

  3. Click here

    CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - COURTESY SWITCH)


    1. A01CG1GE14

      Check the harness and connector between the main body ECU and front door courtesy switch RH (for RHD).


      1. Disconnect the G48 main body ECU connector.

      2. Disconnect the M1 switch connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        G48-24 (DCTY) - M1-1 Always Below 1 Ω
        G48-24 (DCTY) - Body ground Always 10 kΩ or higher
    2. A01CGH5E43

      Check the harness and connector between the main body ECU and front door courtesy switch RH (for LHD).


      1. Disconnect the G49 main body ECU connector.

      2. Disconnect the M1 switch connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        G49-21 (PCTY) - M1-1 Always Below 1 Ω
        G49-21 (PCTY) - Body ground Always 10 kΩ or higher
    3. A01CGH5E29

      Check the harness and connector between the main body ECU and front door courtesy switch LH (for RHD).


      1. Disconnect the G49 main body ECU connector.

      2. Disconnect the N3 switch connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        G49-21 (PCTY) - N3-1 Always Below 1 Ω
        G49-21 (PCTY) - Body ground Always 10 kΩ or higher
    4. A01CG1GE20

      Check the harness and connector between the main body ECU and front door courtesy switch LH (for LHD).


      1. Disconnect the G48 main body ECU connector.

      2. Disconnect the N3 switch connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        G48-24 (DCTY) - N3-1 Always Below 1 Ω
        G48-24 (DCTY) - Body ground Always 10 kΩ or higher
    5. A01CCUCE11

      Check the harness and connector between the main body ECU and slide door courtesy switch LH.


      1. Disconnect the 4A main body ECU connector.

      2. Disconnect the N4 switch connector.

      3. Measure the voltage according to the value(s) in the table below using diode test mode.

        Standard Voltage
        Tester Connection Condition Specified Condition
        4A-4 (LCTY) - N4-1 Always Below 1 Ω
        4A-4 (LCTY) - Body ground Always 10 kΩ or higher
    6. A01CGH5E30

      Check the harness and connector between the main body ECU and slide door courtesy switch RH.


      1. Disconnect the G49 main body ECU connector.

      2. Disconnect the M3 switch connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        G49-7 (RCTY) - M3-1 Always Below 1 Ω
        G49-7 (RCTY) - Body ground Always 10 kΩ or higher
    7. A01CAKVE03

      Check the harness and connector between the main body ECU and back door lock assembly.


      1. Disconnect the G49 main body ECU connector.

      2. Disconnect the U13*1 or U8*2 back door lock assembly connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        G49-25 (BCTY) - U13-3 (CTY)*1 Always Below 1 Ω
        G49-25 (BCTY) - U8-3 (D+)*2 Always Below 1 Ω
        G49-25 (BCTY) - Body ground Always 10 kΩ or higher
        U13-4 (E)*1 - Body ground Always Below 1 Ω
        U8-1 (ACT-)*2 - Body ground Always Below 1 Ω

        *1: w/ Power Back Door

        *2: w/o Power Back Door


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    REPLACE COURTESY SWITCH

  5. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

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    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLEClick here

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    REPLACE MAIN BODY ECUClick here