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

B002C8SE03

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 Service Bulletin.

PROCEDURE


  1. READ VALUE USING GTS


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch to ON.

    3. Turn the GTS on.

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

    5. Read the display on the GTS.


      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 / LOCK or UNLOCK LOCK or UNLOCK

      LOCK: Front door RH locked

      UNLOCK: Front door RH unlocked

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

      LOCK: Front door LH locked

      UNLOCK: Front door LH unlocked

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

      ON: Rear door RH unlocked

      OFF: Rear door RH locked

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

      ON: Rear door LH unlocked

      OFF: Rear 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 (Rear door unlock detection switch RH does not operate) D
      NG (Rear 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 ASSEMBLY LH Click here

    D

    INSPECT REAR DOOR LOCK ASSEMBLY RH Click here

    E

    INSPECT REAR DOOR LOCK ASSEMBLY LH Click here

    B

  2. INSPECT FRONT DOOR LOCK ASSEMBLY RH


    1. Remove the front door lock RH.

      Click here

    2. Inspect the front door lock RH.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT DOOR LOCK ASSEMBLY RH Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (FRONT MULTIPLEX NETWORK DOOR ECU RH - FRONT DOOR LOCK RH AND BODY GROUND)


    1. Disconnect the N3 and N24 front multiplex network door ECU RH connectors.

    2. Disconnect the N27 front door lock RH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N3-22 (LSWE) - N27-8 (E) Always Below 1 Ω
      N24-1 (GND) - Body ground Always Below 1 Ω
      N3-22 (LSWE) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK HARNESS AND CONNECTOR (FRONT DOOR LOCK RH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))


    1. Disconnect the N27 front door lock RH connector.

    2. Disconnect the K11 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
      N27-7 (LSSR) - K11-18 (LSFR) Always Below 1 Ω
      N27-7 (LSSR) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. INSPECT FRONT MULTIPLEX NETWORK DOOR ECU RH


    1. Remove the front multiplex network door ECU RH.

      Click here

      B002E55C08
      *a

      Component without harness connected

      (Front Multiplex Network Door ECU RH)

      		 - -

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N3-22 (LSWE) - N24-1 (GND) Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPLACE FRONT MULTIPLEX NETWORK DOOR ECU RH Click here

  6. INSPECT FRONT DOOR LOCK ASSEMBLY LH


    1. Remove the front door lock LH.

      Click here

    2. Inspect the front door lock LH.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT DOOR LOCK ASSEMBLY LH Click here

    OK

  7. CHECK HARNESS AND CONNECTOR (FRONT MULTIPLEX NETWORK DOOR ECU LH - FRONT DOOR LOCK LH AND BODY GROUND)


    1. Disconnect the O3 and O4 front multiplex network door ECU LH connectors.

    2. Disconnect the O7 front door lock LH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      O3-22 (LSWE) - O7-7 (E) Always Below 1 Ω
      O4-1 (GND) - Body ground Always Below 1 Ω
      O3-22 (LSWE) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. CHECK HARNESS AND CONNECTOR (FRONT DOOR LOCK LH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))


    1. Disconnect the O7 front door lock LH connector.

    2. Disconnect the K11 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
      O7-8 (LSSR) - K11-7 (LSFL) Always Below 1 Ω
      O7-8 (LSSR) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  9. INSPECT FRONT MULTIPLEX NETWORK DOOR ECU LH


    1. Remove the front multiplex network door ECU LH.

      Click here

      B002E55C09
      *a

      Component without harness connected

      (Front Multiplex Network Door ECU LH)

      		 - -

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      O3-22 (LSWE) - O4-1 (GND) Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPLACE FRONT MULTIPLEX NETWORK DOOR ECU LH Click here

  10. INSPECT REAR DOOR LOCK ASSEMBLY RH


    1. Remove the rear door lock RH.

      Click here

    2. Inspect the rear door lock RH.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE REAR DOOR LOCK ASSEMBLY RH Click here

    OK

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


    1. Disconnect the P2 rear door lock RH connector.

    2. Disconnect the K12 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
      P2-9 (LSSR) - K12-2 (LSWR) Always Below 1 Ω
      P2-6 (E) - Body ground Always Below 1 Ω
      P2-9 (LSSR) - 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

  12. INSPECT REAR DOOR LOCK ASSEMBLY LH


    1. Remove the rear door lock LH.

      Click here

    2. Inspect the rear door lock LH.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE REAR DOOR LOCK ASSEMBLY LH Click here

    OK

  13. CHECK HARNESS AND CONNECTOR (REAR DOOR LOCK LH - COWL SIDE JUNCTION BLOCK LH AND BODY GROUND)


    1. Disconnect the Q2 rear door lock 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
      Q2-6 (LSSR) - 5C-30 Always Below 1 Ω
      Q2-9 (E) - Body ground Always Below 1 Ω
      Q2-6 (LSSR) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  14. INSPECT COWL SIDE JUNCTION BLOCK LH


    1. B002ED1C03
      *a

      Component without harness connected

      (Cowl Side Junction Block LH)

      Remove the cowl side junction block LH.

      Click here

    2. Remove the main body ECU (multiplex network 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
      MB-5 (LSWL) - 5C-30 Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPLACE COWL SIDE JUNCTION BLOCK LH Click here