LIGHTING SYSTEM Door Unlock Detection Switch Circuit

DESCRIPTION

The main body ECU (multiplex network body ECU) detects the condition of each door unlock detection switch.

WIRING DIAGRAM

B006MT3E10

CAUTION / NOTICE / HINT

Note


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

  • As the door control battery is installed between the vehicle battery and main body ECU (multiplex network body ECU), first perform the inspections in On-vehicle Inspection to confirm that there are no malfunctions in the power source circuit for the main body ECU (multiplex network body ECU) before performing this troubleshooting procedure.

PROCEDURE


  1. READ VALUE USING GTS (DOOR LOCK POS)


    1. Using the GTS, read the Data List.

      Click here


      Body Electrical > Main Body > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      FR Door Lock Pos Front door unlock detection switch RH signal UNLOCK or LOCK

      UNLOCK: Front door RH unlocked

      LOCK: Front door RH locked

      		 -
      FL Door Lock Pos Front door unlock detection switch LH signal UNLOCK or LOCK

      UNLOCK: Front door LH unlocked

      LOCK: Front door LH locked

      		 -
      RR-Door Lock Pos SW Slide door unlock detection switch RH signal ON or OFF

      ON: Slide door RH unlocked

      OFF: Slide door RH locked

      		 -
      RL-Door Lock Pos SW Slide door unlock detection switch LH signal ON or OFF

      ON: Slide door LH unlocked

      OFF: Slide door LH locked

      		 -

      Body Electrical > Main Body > Data List
      Tester Display
      FR Door Lock Pos
      FL Door Lock Pos
      RR-Door Lock Pos SW
      RL-Door Lock Pos SW
      OK
      The display is as specified in the normal condition column.
      Result
      Result Proceed to
      OK A
      NG (Front door unlock detection switch RH does not operate) B
      NG (Front door unlock detection switch LH does not operate) C
      NG (Slide door unlock detection switch RH does not operate) D
      NG (Slide door unlock detection switch LH does not operate) E

    A

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

    C

    INSPECT FRONT DOOR LOCK WITH MOTOR ASSEMBLY LH (DOOR LOCK POSITION SWITCH) Click here

    D

    INSPECT SLIDE DOOR LOCK ASSEMBLY RH (DOOR LOCK POSITION SWITCH) Click here

    E

    INSPECT SLIDE DOOR LOCK ASSEMBLY LH (DOOR LOCK POSITION SWITCH) Click here

    B

  2. INSPECT FRONT DOOR LOCK WITH MOTOR ASSEMBLY RH (DOOR LOCK POSITION SWITCH)


    1. Remove the front door lock with motor assembly RH.

      Click here

    2. Inspect the front door lock with motor assembly RH.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT DOOR LOCK WITH MOTOR ASSEMBLY RH Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (FRONT DOOR LOCK WITH MOTOR ASSEMBLY RH - JUNCTION BLOCK ASSEMBLY LH AND BODY GROUND)


    1. Disconnect the I8 front door lock with motor assembly RH connector.

    2. Disconnect the 4A junction block assembly LH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I8-7 (LSSR) - 4A-38 Always Below 1 Ω
      I8-8 (E) - Body ground Always Below 1 Ω
      I8-7 (LSSR) or 4A-38 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT JUNCTION BLOCK ASSEMBLY LH


    1. B006P34E11

      Remove the junction block assembly LH.

      Click here

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

      Click here

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A-17 (LSFR) - 4A-38 Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPLACE JUNCTION BLOCK ASSEMBLY LH Click here

  5. INSPECT FRONT DOOR LOCK WITH MOTOR ASSEMBLY LH (DOOR LOCK POSITION SWITCH)


    1. Remove the front door lock with motor assembly LH.

      Click here

    2. Inspect the front door lock with motor assembly LH.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT DOOR LOCK WITH MOTOR ASSEMBLY LH Click here

    OK

  6. CHECK HARNESS AND CONNECTOR (FRONT DOOR LOCK WITH MOTOR ASSEMBLY LH - JUNCTION BLOCK ASSEMBLY LH AND BODY GROUND)


    1. Disconnect the I24 front door lock with motor assembly LH connector.

    2. Disconnect the 4H junction block assembly LH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I24-8 (LSSR) - 4H-22 Always Below 1 Ω
      I24-7 (E) - Body ground Always Below 1 Ω
      I24-8 (LSSR) or 4H-22 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. INSPECT JUNCTION BLOCK ASSEMBLY LH


    1. B006RFBE11

      Remove the junction block assembly LH.

      Click here

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

      Click here

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A-19 (LSFL) - 4H-22 Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPLACE JUNCTION BLOCK ASSEMBLY LH Click here

  8. INSPECT SLIDE DOOR LOCK ASSEMBLY RH (DOOR LOCK POSITION SWITCH)


    1. Remove the slide door lock assembly RH.

      Click here

    2. Inspect the slide door lock assembly RH.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE SLIDE DOOR LOCK ASSEMBLY RH Click here

    OK

  9. CHECK HARNESS AND CONNECTOR (SLIDE DOOR LOCK ASSEMBLY RH - MAIN BODY ECU AND BODY GROUND)


    1. Disconnect the J3 slide door lock assembly RH connector.

    2. Disconnect the G62 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
      J3-1 (LSSR) - G62-2 (LSWR) Always Below 1 Ω
      J3-4 (E) - Body ground Always Below 1 Ω
      J3-1 (LSSR) or G62-2 (LSWR) - 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

  10. INSPECT SLIDE DOOR LOCK ASSEMBLY LH (DOOR LOCK POSITION SWITCH)


    1. Remove the slide door lock assembly LH.

      Click here

    2. Inspect the slide door lock assembly LH.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE SLIDE DOOR LOCK ASSEMBLY LH Click here

    OK

  11. CHECK HARNESS AND CONNECTOR (SLIDE DOOR LOCK ASSEMBLY LH - JUNCTION BLOCK ASSEMBLY LH AND BODY GROUND)


    1. Disconnect the J17 slide door lock assembly LH connector.

    2. Disconnect the 4H junction block assembly LH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      J17-1 (LSSR) - 4H-35 Always Below 1 Ω
      J17-4 (E) - Body ground Always Below 1 Ω
      J17-1 (LSSR) or 4H-35 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  12. INSPECT JUNCTION BLOCK ASSEMBLY LH


    1. B006RFBE12

      Remove the junction block assembly LH.

      Click here

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

      Click here

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A-5 (LSWL) - 4H-35 Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPLACE JUNCTION BLOCK ASSEMBLY LH Click here