LIGHTING SYSTEM Door Courtesy Switch Circuit

DESCRIPTION

The main body ECU (multiplex network body ECU) receives a door open/closed signal from each door courtesy light switch assembly.

WIRING DIAGRAM


  1. w/o Rear Fog Light

    A005IXAE03

  2. w/ Rear Fog Light

    A005LWCE02

CAUTION / NOTICE / HINT

Note

Initialization is necessary when the main body ECU (multiplex network body ECU) is replaced* Click here.


  • *: w/ Automatic Light Control System

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER (DOOR COURTESY)


    1. Using the intelligent tester, read the Data List Click here.

      Main Body
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      FR Door Courtesy Front door courtesy light switch (for RH) signal / ON or OFF

      ON: Front door RH closed

      OFF: Front door RH opened

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

      ON: Front door LH closed

      OFF: Front door LH opened

      		 -
      RL Door Courtesy SW Rear door courtesy light switch (for LH) signal / ON or OFF

      ON: Rear door opened

      OFF: Rear door closed

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

      ON: Rear door opened

      OFF: Rear door closed

      		 -
      Back Door Courtesy SW Back door courtesy light switch signal / ON or OFF

      ON: Back door opened

      OFF: Back door closed

      		 -
      Result
      Result Proceed to
      NG (Front door courtesy light switch RH does not operate) A
      NG (Front door courtesy light switch LH does not operate) B
      NG (Rear door courtesy light switch does not operate) C
      NG (Back door courtesy light switch does not operate) D
      OK E

    B

    INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY LH Click here

    C

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

    D

    INSPECT BACK DOOR LOCK ASSEMBLY Click here

    E

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

    A

  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.


    NG

    REPLACE FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY RH Click here

    OK

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


    1. Disconnect the F76 main body ECU (multiplex network body ECU) connector.

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      K2-1 - F76-19 (FRCY) Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      K2-1 - 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

  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.


    NG

    REPLACE FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY LH Click here

    OK

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


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

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      K1-1 - 3D-36 Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      K1-1 - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. INSPECT 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.

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

      A005GIDE02
      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 (MULTIPLEX NETWORK BODY ECU) Click here

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

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


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

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


    NG

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

    OK

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


    1. Disconnect the F76 main body ECU (multiplex network body ECU) connector.

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

      Standard Resistance (Check for Open)
      for LH
      Tester Connection Condition Specified Condition
      K3-1 - F76-6 (LRCY) Always Below 1 Ω
      for RH
      Tester Connection Condition Specified Condition
      K4-1 - F76-6 (LRCY) Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      F76-6 (LRCY) - 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

  9. INSPECT BACK DOOR LOCK ASSEMBLY


    1. Remove the back door lock assembly Click here.

    2. Inspect the back door lock assembly Click here.

      Tech Tips

      Inspect the door courtesy switch only.


    NG

    REPLACE BACK DOOR LOCK ASSEMBLY Click here

    OK

  10. CHECK VEHICLE CONDITION


    1. Check the vehicle condition.

      Result
      Result Proceed to
      w/ Rear Fog Light A
      w/o Rear Fog Light B

    B

    CHECK VEHICLE CONDITION Click here

    A

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


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

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      P7-3 (D+) - 3D-35 Always Below 1 Ω
      P7-2 (ACT-) - Body ground Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      P7-3 (D+) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  12. INSPECT 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.

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

      A005JN2E02
      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 (MULTIPLEX NETWORK BODY ECU) Click here

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

  13. CHECK VEHICLE CONDITION


    1. Check the vehicle condition.

      Result
      Result Proceed to
      w/o Automatic Light Control System A
      w/ Automatic Light Control System B

    B

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

    A

  14. CHECK HARNESS AND CONNECTOR (BACK DOOR LOCK - MAIN BODY ECU, BODY GROUND)


    1. Disconnect the F76 main body ECU (multiplex network body ECU) connector.

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      P7-3 (D+) - F76-1 (BCTY) Always Below 1 Ω
      P7-2 (ACT-) - Body ground Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      P7-3 (D+) - 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

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


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

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      P7-3 (D+) - 3D-35 Always Below 1 Ω
      P7-2 (ACT-) - Body ground Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      P7-3 (D+) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  16. INSPECT 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.

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

      A005JN2E02
      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 (MULTIPLEX NETWORK BODY ECU) Click here

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here