LIGHTING SYSTEM Door Courtesy Switch Circuit

DESCRIPTION

The main body ECU (driver side junction block assembly) detects the condition of the door courtesy light switch.

WIRING DIAGRAM

A01EJEPE02

INSPECTION PROCEDURE

PROCEDURE


  1. READ VALUE USING GTS


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

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

    5. Read the display on the GTS.

      Main Body
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      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

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

      ON: Front door RH open

      OFF: Front door RH closed

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

      ON: Front door LH open

      OFF: Front door LH closed

      		 -
      Luggage 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
      Driver side or front passenger side courtesy light switch 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 SIDE OR RH SIDE) Click here

    C

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


    1. Remove the front door courtesy light switch assembly Click here.

      A01EJMRE12
      Text in Illustration
      *1

      Component without harness connected

      (Front Door Courtesy Light Switch Assembly)

      		 *2 Switch Body

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

      Standard Resistance
      Tester Connection 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 (MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) - FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY)


    1. A01EJ5DE16
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Main Body ECU (Driver Side Junction Block Assembly))
      *2

      Front view of wire harness connector

      (to Front Door Courtesy Light Switch Assembly LH)

      for LH Side


      1. Disconnect the D50 main body ECU (driver side junction block assembly) connector.

      2. Disconnect the L8 front door courtesy light switch assembly LH connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        D50-24 (DCTY) - L8-1 Always Below 1 Ω
        D50-24 (DCTY) - Body ground Always 10 kΩ or higher
    2. A01EM1XE34
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Main Body ECU (Driver Side Junction Block Assembly))
      *2

      Front view of wire harness connector

      (to Front Door Courtesy Light Switch Assembly RH)

      for RH Side


      1. Disconnect the D49 main body ECU (driver side junction block assembly) connector.

      2. Disconnect the M8 front door courtesy light switch assembly RH connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        D49-21 (PCTY) - M8-1 Always Below 1 Ω
        D49-21 (PCTY) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) Click here

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


    1. Remove the rear door courtesy light switch assembly Click here.

      A01EJMRE12
      Text in Illustration
      *1

      Component without harness connected

      (Rear Door Courtesy Light Switch Assembly)

      		 *2 Switch Body

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

      Standard Resistance
      Tester Connection 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

  5. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) - REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY)


    1. A01EJ0DE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Main Body ECU (Driver Side Junction Block Assembly))
      *2

      Front view of wire harness connector

      (to Rear Door Courtesy Light Switch Assembly LH)

      for LH Side


      1. Disconnect the 2O main body ECU (driver side junction block assembly) connector.

      2. Disconnect the L9 rear door courtesy light switch assembly LH connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        2O-19 (LCTY) - L9-1 Always Below 1 Ω
        2O-19 (LCTY) - Body ground Always 10 kΩ or higher
    2. A01EM1XE35
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Main Body ECU (Driver Side Junction Block Assembly))
      *2

      Front view of wire harness connector

      (to Rear Door Courtesy Light Switch Assembly RH)

      for RH Side


      1. Disconnect the D49 main body ECU (driver side junction block assembly) connector.

      2. Disconnect the M9 rear door courtesy light switch assembly RH connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        D49-7 (RCTY) - M9-1 Always Below 1 Ω
        D49-7 (RCTY) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) Click here

  6. INSPECT BACK DOOR LOCK ASSEMBLY


    1. Remove the back door lock assembly Click here.

      A01EJSTE01

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      3 (CTY) - 4 (E) Open-latched Below 1 Ω
      3 (CTY) - 4 (E) Half-latched Below 1 Ω
      3 (CTY) - 4 (E) Full-latched 10 kΩ or higher
      3 (CTY) - 4 (E) Over-latched 10 kΩ or higher

    NG

    REPLACE BACK DOOR LOCK ASSEMBLY Click here

    OK

  7. CHECK HARNESS AND CONNECTOR (BACK DOOR LOCK ASSEMBLY - MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY))


    1. A01EK47E02
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Main Body ECU (Driver Side Junction Block Assembly))
      *2

      Front view of wire harness connector

      (to Back Door Lock Assembly)

      Disconnect the D49 main body ECU (driver side junction block assembly) connector.

    2. Disconnect the R1 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
      D49-25 (BCTY) - R1-3 (CTY) Always Below 1 Ω
      D49-25 (BCTY) - Body ground Always 10 kΩ or higher
      R1-4 (E) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) Click here