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

A004WYJE05

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the intelligent tester on.

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

    5. Read the display on the intelligent tester.

      Main Body
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      FL Door Lock Pos Front door unlock detection switch LH signal/ON or OFF

      ON: Front door LH unlocked

      OFF: Front door LH locked

      		 -
      FR Door Lock Pos Front door unlock detection switch RH signal/ON or OFF

      ON: Front door RH unlocked

      OFF: Front door RH locked

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

      ON: Rear door LH unlocked

      OFF: Rear door LH locked

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

      ON: Rear door RH unlocked

      OFF: Rear door RH locked

      		 -
      Result
      Result Proceed to
      OK A
      Front door unlock detection switch LH does not operate B
      Front door unlock detection switch RH does not operate C
      Rear door unlock detection switch LH does not operate D
      Rear door unlock detection switch RH does not operate E

    A

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

    C

    INSPECT FRONT DOOR LOCK ASSEMBLY RH Click here

    D

    INSPECT REAR DOOR LOCK ASSEMBLY LH Click here

    E

    INSPECT REAR DOOR LOCK ASSEMBLY RH Click here

    B

  2. INSPECT FRONT DOOR LOCK ASSEMBLY LH


    1. Inspect the front door lock assembly LH Click here.

      OK
      Front door lock assembly LH is normal.

    NG

    REPLACE FRONT DOOR LOCK ASSEMBLY LH Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (FRONT DOOR LOCK ASSEMBLY LH - MAIN BODY ECU AND BODY GROUND)


    1. Disconnect the K3 front door lock assembly LH connector.

    2. Disconnect the H16 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
      K3-8 (LSSR) - H16-7 (LSFL) Always Below 1 Ω
      K3-8 (LSSR) - Body ground Always 10 kΩ or higher
      K3-7 (E) - Body ground Always Below 1 Ω

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  4. INSPECT FRONT DOOR LOCK ASSEMBLY RH


    1. Inspect the front door lock assembly RH Click here.

      OK
      Front door lock assembly RH is normal.

    NG

    REPLACE FRONT DOOR LOCK ASSEMBLY RH Click here

    OK

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


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

    2. Disconnect the H16 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
      J3-7 (LSSR) - H16-18 (LSFR) Always Below 1 Ω
      J3-7 (LSSR) - Body ground Always 10 kΩ or higher
      J3-8 (E) - Body ground Always Below 1 Ω

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  6. INSPECT REAR DOOR LOCK ASSEMBLY LH


    1. Inspect the rear door lock assembly LH Click here.

      OK
      Rear door lock assembly LH is normal.

    NG

    REPLACE REAR DOOR LOCK ASSEMBLY LH Click here

    OK

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


    1. Disconnect the M1 rear door lock assembly LH connector.

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

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

      Standard Resistance
      for LHD:
      Tester Connection Condition Specified Condition
      M1-6 (LSSR) - 2D-25 Always Below 1 Ω
      M1-6 (LSSR) - Body ground Always 10 kΩ or higher
      M1-9 (E) - Body ground Always Below 1 Ω
      for RHD:
      Tester Connection Condition Specified Condition
      M1-5 (LSSR) - 2D-25 Always Below 1 Ω
      M1-5 (LSSR) - Body ground Always 10 kΩ or higher
      M1-6 (E) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. 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.

      A004VCDE02
      Text in Illustration
      *a

      Component without harness connected

      (Instrument Panel Junction Block Assembly)

      		 *b

      Component without harness connected

      (Instrument Panel Junction Block Assembly)
      Standard Resistance
      Tester Connection Condition Specified Condition
      2D-25 - A-5 (LSWL) Always Below 1 Ω
      2D-25 - Body ground Always 10 kΩ or higher

    OK

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

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

  9. INSPECT REAR DOOR LOCK ASSEMBLY RH


    1. Inspect the rear door lock assembly RH Click here.

      OK
      Rear door lock assembly RH is normal.

    NG

    REPLACE REAR DOOR LOCK ASSEMBLY RH Click here

    OK

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


    1. Disconnect the L1 rear door lock assembly RH connector.

    2. Disconnect the H17 main body ECU (multiplex network body ECU) connector.

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

      Standard Resistance
      for LHD:
      Tester Connection Condition Specified Condition
      L1-6 (LSSR) - H17-2 (LSWR) Always Below 1 Ω
      L1-6 (LSSR) - Body ground Always 10 kΩ or higher
      L1-9 (E) - Body ground Always Below 1 Ω
      for RHD:
      Tester Connection Condition Specified Condition
      L1-9 (LSSR) - H17-2 (LSWR) Always Below 1 Ω
      L1-9 (LSSR) - Body ground Always 10 kΩ or higher
      L1-10 (E) - Body ground Always Below 1 Ω

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR