LIGHTING SYSTEM Door Courtesy Switch Circuit

DESCRIPTION

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

WIRING DIAGRAM

B006BSYE01

CAUTION / NOTICE / HINT

Note

Before replacing the main body ECU (multiplex network body ECU), refer to Service Bulletin.

PROCEDURE


  1. READ VALUE USING GTS


    1. Read the Data List according to the display on the GTS.

      Click here


      Body Electrical > Main Body > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      RR Door Courtesy SW Rear door courtesy light switch assembly RH signal OFF or ON

      OFF: Rear door RH closed

      ON: Rear door RH open

      		 -
      RL Door Courtesy SW Rear door courtesy light switch assembly LH signal OFF or ON

      OFF: Rear door LH closed

      ON: Rear door LH open

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

      OFF: Front door RH closed

      ON: Front door RH open

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

      OFF: Front door LH closed

      ON: Front door LH open

      		 -

      Body Electrical > Main Body > Data List
      Tester Display
      RR Door Courtesy SW
      RL Door Courtesy SW
      FR Door Courtesy SW
      FL Door Courtesy SW
      OK
      Normal conditions listed above are displayed.
      Result
      Result Proceed to
      OK A
      NG ("FR Door Courtesy SW" is abnormal) B
      NG ("FL Door Courtesy SW" is abnormal) C
      NG ("RR Door Courtesy SW" is abnormal) D
      NG ("RL Door Courtesy SW" is abnormal) E

    A

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    C

    INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY LH Click here

    D

    INSPECT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY RH Click here

    E

    INSPECT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY LH Click here

    B

  2. INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY RH


    1. Remove the front door courtesy light switch assembly RH.

      Click here

    2. Inspect the front door courtesy light switch assembly RH.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY RH Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY RH - MAIN BODY ECU [MULTIPLEX NETWORK BODY ECU])


    1. Disconnect the L32 front door courtesy light switch assembly RH connector.

    2. Disconnect the G12 main body ECU (multiplex network body ECU) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L32-1 - G12-6 (FRCY) Always Below 1 Ω
      L32-1 or G12-6 (FRCY) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  4. INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY LH


    1. Remove the front door courtesy light switch assembly LH.

      Click here

    2. Inspect the front door courtesy light switch assembly LH.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY LH Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY LH - MAIN BODY ECU [MULTIPLEX NETWORK BODY ECU])


    1. Disconnect the L62 front door courtesy light switch assembly LH connector.

    2. Disconnect the G12 main body ECU (multiplex network body ECU) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L62-1 - G12-1 (FLCY) Always Below 1 Ω
      L62-1 or G12-1 (FLCY) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  6. INSPECT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY RH


    1. Remove the rear door courtesy light switch assembly RH.

      Click here

    2. Inspect the rear door courtesy light switch assembly RH.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY RH Click here

    OK

  7. CHECK HARNESS AND CONNECTOR (REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY RH - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)


    1. Disconnect the L40 rear door courtesy light switch assembly RH connector.

    2. Disconnect the 5D*1 or 5H*2 instrument panel junction block assembly connector.


      • *1: for LHD

      • *2: for RHD

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      L40-1 - 5D-19 Always Below 1 Ω
      L40-1 or 5D-19 - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      L40-1 - 5H-26 Always Below 1 Ω
      L40-1 or 5H-26- Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY


    1. for LHD:

      B006E0PC03
      *a

      Component without harness connected

      (Instrument Panel Junction Block Assembly)

      		 - -

      1. Remove the instrument panel junction block assembly.

        Click here

      2. Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.

        Click here

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        5D-19 - A-2 (RCTY) Always Below 1 Ω

    2. for RHD:

      B006D1PC11
      *a

      Component without harness connected

      (Instrument Panel Junction Block Assembly)

      		 - -

      1. Remove the instrument panel junction block assembly.

        Click here

      2. Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.

        Click here

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        5H-26 - A-2 (RCTY) Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

  9. INSPECT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY LH


    1. Remove the rear door courtesy light switch assembly LH.

      Click here

    2. Inspect the rear door courtesy light switch assembly LH.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY LH Click here

    OK

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


    1. Disconnect the L67 rear door courtesy light switch assembly LH connector.

    2. Disconnect the 5H*1 or 5A*2 instrument panel junction block assembly connector.


      • *1: for LHD

      • *2: for RHD

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      L67-1 - 5H-26 Always Below 1 Ω
      L67-1 or 5H-26 - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      L67-1 - 5A-42 Always Below 1 Ω
      L67-1 or 5A-42 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  11. CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY


    1. for LHD:

      B006D1PC10
      *a

      Component without harness connected

      (Instrument Panel Junction Block Assembly)

      		 - -

      1. Remove the instrument panel junction block assembly.

        Click here

      2. Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.

        Click here

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        5H-26 - A-13 (LCTY) Always Below 1 Ω

    2. for RHD:

      B006GFOC08
      *a

      Component without harness connected

      (Instrument Panel Junction Block Assembly)

      		 - -

      1. Remove the instrument panel junction block assembly.

        Click here

      2. Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.

        Click here

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        5A-42 - A-13 (LCTY) Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here