LIGHTING SYSTEM Door Courtesy Switch Circuit

DESCRIPTION

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

WIRING DIAGRAM

A01NFKHE01

INSPECTION PROCEDURE

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the intelligent tester on.

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

    5. Read the display on the intelligent tester.

      Main Body
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      FL Door Courtesy Front door LH condition signal/ON or OFF

      ON: Front door LH closed

      OFF: Front door LH open

      		 -
      FR Door Courtesy Front door RH condition signal/ON or OFF

      ON: Front door RH closed

      OFF: Front door RH open

      		 -
      RR Door Courtesy SW Rear door courtesy light switch RH signal/ON or OFF

      ON: Rear door RH open

      OFF: Rear door RH closed

      		 -
      RL Door Courtesy SW Rear door courtesy light 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

      		 -
      Back Door (w/ Power Back Door)
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      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.
      Result
      Result Proceed to
      OK A
      Front door courtesy light switch LH or RH does not operate B
      Rear door courtesy light switch LH or RH does not operate C
      Back door courtesy switch does not operate D

    B

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

    C

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

    D

    INSPECT BACK DOOR LOCK ASSEMBLY 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. A01NHHAE01
      Text in Illustration
      *1

      Component without harness connected

      (Front Door Courtesy Light Switch Assembly)
      *2 Switch Body

      Remove the front door courtesy light switch assembly Click here.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      1 - Switch body Pushed 10 kΩ or higher
      1 - Switch body Not pushed Below 1 Ω

    NG

    REPLACE FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - SWITCH)


    1. A01NE65E01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Instrument Panel Junction Block Assembly)
      *2

      Front view of wire harness connector

      (to Front Door Courtesy Light Switch Assembly)

      for Front LH


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

      2. Disconnect the P3 front door courtesy light switch assembly connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        2H-26 - P3-1 Always Below 1 Ω
        2H-26 - Body ground Always 10 kΩ or higher
    2. A01NCW3E01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Instrument Panel Junction Block Assembly)
      *2

      Front view of wire harness connector

      (to Front Door Courtesy Light Switch Assembly)

      for Front RH


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

      2. Disconnect the O4 front door courtesy light switch assembly connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        2D-26 - O4-1 Always Below 1 Ω
        2D-26 - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY


    1. A01NF4QE01
      Text in Illustration
      *1

      Component without harness connected

      (Instrument Panel Junction Block Assembly)

      for Front LH


      1. Remove the instrument panel junction block assembly.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        2H-26 - A-2 (FLCY) Always Below 1 Ω
        2H-26 - Body ground Always 10 kΩ or higher
    2. A01NDIGE01
      Text in Illustration
      *1

      Component without harness connected

      (Instrument Panel Junction Block Assembly)

      for Front RH


      1. Remove the instrument panel junction block assembly.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        2D-26 - A-4 (FRCY) Always Below 1 Ω
        2D-26 - Body ground Always 10 kΩ or higher

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

    OK

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

  5. INSPECT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY (LH OR RH)


    1. A01NHHAE01
      Text in Illustration
      *1

      Component without harness connected

      (Rear Door Courtesy Light Switch Assembly)
      *2 Switch Body

      Remove the rear door courtesy light switch assembly Click here.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      1 - Switch body Pushed 10 kΩ or higher
      1 - Switch body Not pushed Below 1 Ω

    NG

    REPLACE REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY Click here

    OK

  6. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - REAR COURTESY LIGHT SWITCH)


    1. A01NCOLE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Main Body ECU (Multiplex Network Body ECU))
      *2

      Front view of wire harness connector

      (to Rear Door Courtesy Light Switch Assembly)

      for Rear LH


      1. Disconnect the F12 main body ECU (multiplex network body ECU) connector.

      2. Disconnect the P13 rear door courtesy light switch assembly connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        F12-3 (LCTY) - P13-1 Always Below 1 Ω
        F12-3 (LCTY) - Body ground Always 10 kΩ or higher
    2. A01NFVUE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Main Body ECU (Multiplex Network Body ECU))
      *2

      Front view of wire harness connector

      (to Rear Door Courtesy Light Switch Assembly)

      for Rear RH


      1. Disconnect the F13 main body ECU (multiplex network body ECU) connector.

      2. Disconnect the O14 rear door courtesy light switch assembly connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        F13-6 (RCTY) - O14-1 Always Below 1 Ω
        F13-6 (RCTY) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

  7. INSPECT BACK DOOR LOCK ASSEMBLY


    1. w/o Power Back Door


      1. A01NH0CE01
        Text in Illustration
        *1

        Component without harness connected

        (Back Door Lock Assembly)
        *2 Lock
        *3 Unlock

        Remove the back door lock assembly Click here.

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

        Standard Resistance
        Tester Connection Switch Condition Specified Condition
        1 - 3 Locked 10 kΩ or higher
        1 - 3 Unlocked Below 1 Ω

    2. w/ Power Back Door


      1. Remove the back door lock assembly Click here.

        A01NFJSE01

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        8 (CTY) - 7 (E) Open-latch Below 1 Ω
        8 (CTY) - 7 (E) Half-latch Below 1 Ω
        8 (CTY) - 7 (E) Full-latch 10 kΩ or higher
        8 (CTY) - 7 (E) Over-latch 10 kΩ or higher

    NG

    REPLACE BACK DOOR LOCK ASSEMBLY Click here

    OK

  8. CHECK HARNESS AND CONNECTOR (BACK DOOR LOCK - MAIN BODY ECU OR POWER BACK DOOR UNIT)


    1. A01NHSXE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Main Body ECU (Multiplex Network Body ECU))
      *2

      Front view of wire harness connector

      (to Back Door Lock Assembly)

      w/o Power Back Door


      1. Disconnect the F13 main body ECU (multiplex network body ECU) connector.

      2. Disconnect the Y9 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
        F13-19 (BCTY) - Y9-3 Always Below 1 Ω
        F13-19 (BCTY) - Body ground Always 10 kΩ or higher
        Y9-1 - Body ground Always Below 1 Ω
    2. A01NHOAE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Power Back Door Unit Assembly)
      *2

      Front view of wire harness connector

      (to Back Door Lock Assembly)

      w/ Power Back Door


      1. Disconnect the P33 power back door unit assembly connector.

      2. Disconnect the Y10 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
        P33-20 (FUL) - Y10-8 (CTY) Always Below 1 Ω
        P33-20 (FUL) - Body ground Always 10 kΩ or higher
        Y10-7 (E) - Body ground Always Below 1 Ω
        Result
        Result Proceed to
        OK (w/o Power Back Door) A
        OK (w/ Power Back Door) B
        NG C

    B

    REPLACE POWER BACK DOOR UNIT ASSEMBLY Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    A

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