LIGHTING SYSTEM Door Courtesy Switch Circuit

DESCRIPTION

The main body ECU detects the condition of each door courtesy light switch.

WIRING DIAGRAM

A01UZAJE03

PROCEDURE


  1. READ VALUE USING GTS


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON (IG).

    3. Turn the GTS on.

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

    5. According to the display on the GTS, read the Data List.

      Main Body
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      RR Door Courtesy SW

      Rear door courtesy light switch LH and RH signal /

      OFF or ON

      OFF: Rear door LH and RH closed

      ON: Rear door LH or RH opened

      		 -
      RL Door Courtesy SW

      Rear door courtesy light switch LH and RH signal /

      OFF or ON

      OFF: Rear door LH and RH closed

      ON: Rear door LH or RH opened

      		 -
      Back Door Courtesy SW

      Back door courtesy light switch signal /

      OFF or ON

      OFF: Back door closed

      ON: Back door opened

      		 -
      FR Door Courtesy SW

      Front door courtesy light switch RH signal /

      OFF or ON

      OFF: Front door RH closed

      ON: Front door RH opened

      		 -
      FL Door Courtesy SW

      Front door courtesy light switch LH signal /

      OFF or ON

      OFF: Front door LH closed

      ON: Front door LH opened

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

    A

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

    C

    INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY RH Click here

    D

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

    E

    INSPECT BACK DOOR LOCK ASSEMBLY (BACK DOOR COURTESY SWITCH) Click here

    B

  2. INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY LH


    1. Inspect the front door courtesy light switch assembly LH Click here.


    NG

    REPLACE FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY LH Click here

    OK

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


    1. Disconnect the K1 front door courtesy light switch assembly LH connector.

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K1-1 - 3D-36 Always Below 1 Ω
      K1-1 - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY


    1. Remove the instrument panel junction block assembly.

    2. Remove the main body ECU from the instrument panel junction block assembly.

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

      A01V107E03
      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 Click here

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

  5. INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY RH


    1. Inspect the front door courtesy light switch assembly RH Click here.


    NG

    REPLACE FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY RH Click here

    OK

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


    1. Disconnect K2 front door courtesy light switch assembly RH connector.

    2. Disconnect the F57 main body ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K2-1 - F57-19 (FRCY) Always Below 1 Ω
      K2-1 - Body ground Always 10 kΩ or higher

    OK

    REPLACE MAIN BODY ECU Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

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


    1. Inspect the rear door courtesy light switch assembly LH or RH Click here.


    NG

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

    OK

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


    1. Disconnect K3 or K4 rear door courtesy light switch assembly LH or RH connector.

    2. Disconnect the F57 main body ECU connector.

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

      Standard Resistance
      LH
      Tester Connection Condition Specified Condition
      K3-1 - F57-6 (LRCY) Always Below 1 Ω
      K3-1 - Body ground Always 10 kΩ or higher
      RH
      Tester Connection Condition Specified Condition
      K4-1 - F57-6 (LRCY) Always Below 1 Ω
      K4-1 - Body ground Always 10 kΩ or higher

    OK

    REPLACE MAIN BODY ECU Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  9. INSPECT BACK DOOR LOCK ASSEMBLY (BACK DOOR COURTESY SWITCH)


    1. Inspect the back door lock assembly (back door courtesy switch) Click here.


    NG

    REPLACE BACK DOOR LOCK ASSEMBLY (BACK DOOR COURTESY SWITCH) Click here

    OK

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


    1. Disconnect the P5 back door lock assembly (back door courtesy switch) connector.

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      P5-3 (D+) - 3D-35 Always Below 1 Ω
      P5-3 (D+) - Body ground Always 10 kΩ or higher
      P5-2 (ACT-) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  11. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY


    1. Remove the instrument panel junction block assembly.

    2. Remove the main body ECU from the instrument panel junction block assembly.

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

      A01V06ME02
      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 Click here

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY