LIGHTING SYSTEM Door Courtesy Switch Circuit

DESCRIPTION

The main body ECU receives courtesy switch signals to control the illuminated entry system and light auto turn off system.

WIRING DIAGRAM

A017DJDE02
A017DJDE05

INSPECTION PROCEDURE

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch on (IG).

    3. Turn the intelligent tester on.

    4. Select the following menu items: Body Electrical / Main Body / Data List.

    5. Read the display on the intelligent tester.

      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 Rear door courtesy switch RH signal / ON or OFF

      ON: Rear door RH open

      OFF: Rear door RH closed

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

      ON: Rear door LH open

      OFF: Rear door LH closed

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

      ON: Back door open

      OFF: Back door closed

      		 -
      Glass Hatch Courtesy Switch Back window Courtesy Switch signal / ON or OFF

      ON: Back window open

      OFF: Back window closed

      		 -
      OK
      Normal conditions listed above are displayed.

    NG

    INSPECT COURTESY SWITCH Click here

    OK

    PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE Click here

  2. INSPECT COURTESY SWITCH


    1. Inspect the front door courtesy switches Click here.

    2. Inspect the rear door courtesy switches Click here.

    3. Inspect the back door courtesy switch Click here.

    4. Inspect the back window courtesy switch Click here.

      OK
      Courtesy switches are normal.

    NG

    REPLACE COURTESY SWITCH

    OK

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


    1. A017C8UE10

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


      1. Disconnect the D7 main body ECU connector.

      2. Disconnect the O2 switch connector.

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

        Standard resistance
        Tester Connection Condition Specified Condition
        D7-24 (DCTY) - O2-1 Always Below 1 Ω
        D7-24 (DCTY) - Body ground Always 10 kΩ or higher
    2. A017BO2E23

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


      1. Disconnect the D6 main body ECU connector.

      2. Disconnect the O2 switch connector.

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

        Standard resistance
        Tester Connection Condition Specified Condition
        D6-21 (PCTY) - O2-1 Always Below 1 Ω
        D6-21 (PCTY) - Body ground Always 10 kΩ or higher
    3. A017BO2E21

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


      1. Disconnect the D6 main body ECU connector.

      2. Disconnect the N2 switch connector.

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

        Standard resistance
        Tester Connection Condition Specified Condition
        D6-21 (PCTY) - N2-1 Always Below 1 Ω
        D6-21 (PCTY) - Body ground Always 10 kΩ or higher
    4. A017C8UE11

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


      1. Disconnect the D7 main body ECU connector.

      2. Disconnect the N2 switch connector.

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

        Standard resistance
        Tester Connection Condition Specified Condition
        D7-24 (DCTY) - N2-1 Always Below 1 Ω
        D7-24 (DCTY) - Body ground Always 10 kΩ or higher
    5. A017G3HE07

      Check the harness and connector between the instrument panel junction block and rear door courtesy switch LH.


      1. Disconnect the 1O instrument panel junction block connector.

      2. Disconnect the O8 switch connector.

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

        Standard resistance
        Tester Connection Condition Specified Condition
        1O-7 (LCTY) - O8-1 Always Below 1 Ω
        1O-7 (LCTY) - Body ground Always 10 kΩ or higher
    6. A017BO2E22

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


      1. Disconnect the D6 main body ECU connector.

      2. Disconnect the N7 switch connector.

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

        Standard resistance
        Tester Connection Condition Specified Condition
        D6-7 (RCTY) - N7-1 Always Below 1 Ω
        D6-7 (RCTY) - Body ground Always 10 kΩ or higher
    7. A017DYWE02

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


      1. Disconnect the D6 main body ECU connector.

      2. Disconnect the T4*1or T3*2back door lock assembly connector.

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

        Standard resistance
        Tester Connection Condition Specified Condition

        D6-25 (BCTY) - T4-3*1

        		Always Below 1 Ω

        D6-25 (BCTY) - T3-3*2

        		Always Below 1 Ω
        D6-25 (BCTY) - Body ground Always 10 kΩ or higher

        *1: w/ Power Back Door

        *2: w/o Power Back Door

    8. A017C17E03

      Check the harness and connector between the main body ECU and back window lock assembly (w/ Glass Hatch Opener).


      1. Disconnect the D7 main body ECU connector.

      2. Disconnect the T6 back window lock assembly connector.

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

        Standard resistance
        Tester Connection Condition Specified Condition
        D7-20 (GCTY) - T6-2 Always Below 1 Ω
        D7-20 (GCTY) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)