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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 detects the condition of each door courtesy light switch.

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WIRING DIAGRAM

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PROCEDURE


  1. Click here

    READ VALUE USING INTELLIGENT TESTER


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the intelligent tester on.

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

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

      Table 1. Main Body
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      RR Door Courtesy SW*1

      Rear door courtesy light switch LH and RH signal /

      OFF or ON

      OFF: Rear door LH and RH closed

      ON: Rear door LH or RH opened

      		 -
      RL Door Courtesy SW*1

      Rear door courtesy light switch LH and RH signal /

      OFF or ON

      OFF: Rear door LH and RH closed

      ON: Rear door LH or RH opened

      		 -
      Back Door Courtesy SW

      Back door courtesy light switch signal /

      OFF or ON

      OFF: Back door closed

      ON: Back door opened

      		 -
      FR Door Courtesy

      Front door courtesy light switch RH signal /

      ON or OFF

      ON: Front door RH closed

      OFF: Front door RH opened

      		 -
      FL Door Courtesy

      Front door courtesy light switch LH signal /

      ON or OFF

      ON: Front door LH closed

      OFF: Front door LH opened

      		 -
      OK
      Normal conditions listed above are displayed.
      Table 2. Result
      Result Proceed to
      OK A
      NG (Front door courtesy light switch assembly LH does not operate) B
      NG (Front door courtesy light switch assembly RH does not operate) C
      NG (Rear door courtesy light switch assembly does not operate)*1 D
      NG (Back door courtesy switch) E

      *1: for 5 Door


  2. Click here

    INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY LH


    1. Inspect the front door courtesy light switch assembly LH (Click here).


  3. Click here

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


    1. Disconnect the K1 front door courtesy light switch assembly LH connector.

    2. Disconnect the 3D instrument panel junction block assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K1-1 - 3D-36 Always Below 1 Ω
      K1-1 - Body ground Always 10 kΩ or higher

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  4. Click here

    INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY


    1. Remove the instrument panel junction block assembly.

    2. Remove the main body ECU from the instrument panel junction block assembly.

    3. A01VERWE01

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

      Table 3. Text in Illustration
      *a

      Component without harness connected

      (Instrument Panel Junction Block Assembly)

      		 - -
      Standard Resistance
      Tester Connection Condition Specified Condition
      3D-36 - MB-2 (FLCY) Always Below 1 Ω

    • OK

      REPLACE MAIN BODY ECU (Click here)

    • NG

      REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

  5. Click here

    INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY RH


    1. Inspect the front door courtesy light switch assembly RH (Click here).


  6. Click here

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


    1. Disconnect K2 front door courtesy light switch assembly RH connector.

    2. Disconnect the F76 main body ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K2-1 - F76-19 (FRCY) Always Below 1 Ω
      K2-1 - Body ground Always 10 kΩ or higher

    • OK

      REPLACE MAIN BODY ECU (Click here)

    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  7. Click here

    INSPECT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY


    1. Inspect the rear door courtesy light switch assembly (Click here).


  8. Click here

    CHECK HARNESS AND CONNECTOR (REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY - MAIN BODY ECU)


    1. Disconnect K3 or K4 rear door courtesy light switch assembly connector.

    2. Disconnect the F76 main body ECU connector.

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

      Standard Resistance
      Table 4. LH
      Tester Connection Condition Specified Condition
      K3-1 - F76-6 (LRCY) Always Below 1 Ω
      K3-1 - Body ground Always 10 kΩ or higher
      Table 5. RH
      Tester Connection Condition Specified Condition
      K4-1 - F76-6 (LRCY) Always Below 1 Ω
      K4-1 - Body ground Always 10 kΩ or higher

    • OK

      REPLACE MAIN BODY ECU (Click here)

    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  9. Click here

    INSPECT BACK DOOR LOCK ASSEMBLY (BACK DOOR COURTESY SWITCH)


    1. Inspect the back door lock assembly (back door courtesy switch) (Click here).


  10. Click here

    CHECK HARNESS AND CONNECTOR (BACK DOOR LOCK ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND BODY GROUND)


    1. Disconnect the P12 back door lock assembly (back door courtesy switch) connector.

    2. Disconnect the 3D instrument panel junction block assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      P12-3 (D+) - 3D-35 Always Below 1 Ω
      P12-3 (D+) - Body ground Always 10 kΩ or higher
      P12-2 (ACT-) - Body ground Always Below 1 Ω

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  11. Click here

    INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY


    1. Remove the instrument panel junction block assembly.

    2. Remove the main body ECU from the instrument panel junction block assembly.

    3. A01VL7VE01

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

      Table 6. Text in Illustration
      *a

      Component without harness connected

      (Instrument Panel Junction Block Assembly)

      		 - -
      Standard Resistance
      Tester Connection Condition Specified Condition
      3D-35 - MB-20 (BCTY) Always Below 1 Ω

    • OK

      REPLACE MAIN BODY ECU (Click here)

    • NG

      REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY