LIGHTING SYSTEM Door Courtesy Switch Circuit

DESCRIPTION

The main body ECU receives a door open or closed signal from each door courtesy light switch.

WIRING DIAGRAM

A000PGWE20

CAUTION / NOTICE / HINT

Note


  • Recognition code registration is necessary when replacing the main body ECU (multiplex network body ECU).

  • If the main body ECU (multiplex network body ECU) is replaced, refer to the Service Bulletin.

PROCEDURE


  1. READ VALUE USING GTS (DOOR COURTESY LIGHT SWITCH)


    1. Using the GTS, read the Data List Click here.

      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 Front door courtesy light switch RH signal / ON or OFF

      ON: Front door RH closed

      OFF: Front door RH open

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

      ON: Front door LH closed

      OFF: Front door LH open

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

    A

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

    C

    INSPECT FRONT DOOR COURTESY LIGHT SWITCH LH Click here

    D

    INSPECT REAR DOOR COURTESY LIGHT SWITCH RH Click here

    E

    INSPECT REAR DOOR COURTESY LIGHT SWITCH LH Click here

    B

  2. INSPECT FRONT DOOR COURTESY LIGHT SWITCH RH


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

    2. Inspect the front door courtesy light switch RH Click here.


    NG

    REPLACE FRONT DOOR COURTESY LIGHT SWITCH RH Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH RH - COWL SIDE JUNCTION BLOCK LH)


    1. Disconnect the T6 front door courtesy light switch RH connector.

    2. Disconnect the 5A cowl side junction block LH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      T6-1 - 5A-33 Always Below 1 Ω
      T6-1 - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT COWL SIDE JUNCTION BLOCK LH


    1. A000PINE02

      Remove the cowl side junction block LH Click here.

    2. Remove the main body ECU from the cowl side junction block LH Click here.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A-4 (FRCY) - 5A-33 Always Below 1 Ω

    OK

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

    NG

    REPLACE COWL SIDE JUNCTION BLOCK LH Click here

  5. INSPECT FRONT DOOR COURTESY LIGHT SWITCH LH


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

    2. Inspect the front door courtesy light switch LH Click here.


    NG

    REPLACE FRONT DOOR COURTESY LIGHT SWITCH LH Click here

    OK

  6. CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH LH - COWL SIDE JUNCTION BLOCK LH)


    1. Disconnect the U8 front door courtesy light switch LH connector.

    2. Disconnect the 5C cowl side junction block LH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      U8-1 - 5C-44 Always Below 1 Ω
      U8-1 - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. INSPECT COWL SIDE JUNCTION BLOCK LH


    1. A000Q1OE02

      Remove the cowl side junction block LH Click here.

    2. Remove the main body ECU from the cowl side junction block LH Click here.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A-2 (FLCY) - 5C-44 Always Below 1 Ω

    OK

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

    NG

    REPLACE COWL SIDE JUNCTION BLOCK LH Click here

  8. INSPECT REAR DOOR COURTESY LIGHT SWITCH RH


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

    2. Inspect the rear door courtesy light switch RH Click here.


    NG

    REPLACE REAR DOOR COURTESY LIGHT SWITCH RH Click here

    OK

  9. CHECK HARNESS AND CONNECTOR (REAR DOOR COURTESY LIGHT SWITCH RH - MAIN BODY ECU)


    1. Disconnect the T21 rear door courtesy light switch RH connector.

    2. Disconnect the N12 main body ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      T21-1 - N12-6 (RCTY) Always Below 1 Ω
      T21-1 - Body ground Always 10 kΩ or higher

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  10. INSPECT REAR DOOR COURTESY LIGHT SWITCH LH


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

    2. Inspect the rear door courtesy light switch LH Click here.


    NG

    REPLACE REAR DOOR COURTESY LIGHT SWITCH LH Click here

    OK

  11. CHECK HARNESS AND CONNECTOR (REAR DOOR COURTESY LIGHT SWITCH LH - MAIN BODY ECU)


    1. Disconnect the U18 rear door courtesy light switch LH connector.

    2. Disconnect the N11 main body ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      U18-1 - N11-3 (LCTY) Always Below 1 Ω
      U18-1 - Body ground Always 10 kΩ or higher

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR