LIGHTING SYSTEM Door Unlock Detection Switch Circuit

DESCRIPTION

The main body ECU detects the condition of each door unlock detection switch.

WIRING DIAGRAM

A01FR2BE03

INSPECTION PROCEDURE

CAUTION:


  • 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 the Service Bulletin.

PROCEDURE


  1. READ VALUE USING GTS (DOOR LOCK POSITION SWITCH)


    1. Using the GTS, read the Data List Click here.

      Main Body
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      FR Door Lock Pos Front door unlock detection switch RH signal / 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: 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: 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: Rear door LH unlocked

      OFF: Rear door LH locked

      		 -
      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

    B

    INSPECT FRONT DOOR LOCK ASSEMBLY RH 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

    A

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

  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.


    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 Q3 and Q4 front multiplex network door ECU RH connectors.

    2. Disconnect the Q7 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
      Q3-22 (LSWE) - Q7-8 (E) Always Below 1 Ω
      Q4-1 (GND) - Body ground Always Below 1 Ω
      Q3-22 (LSWE) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. Disconnect the Q7 front door lock RH connector.

    2. Disconnect the N12 main body ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Q7-7 (LSSR) - N12-18 (LSFR) Always Below 1 Ω
      Q7-7 (LSSR) - Body ground Always 10 kΩ or higher

    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.

      A01FUBPE15

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Q3-22 (LSWE) - Q4-1 (GND) Always Below 1 Ω

    NG

    REPLACE FRONT MULTIPLEX NETWORK DOOR ECU RH Click here

    OK

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) 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.


    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 Q18 and Q19 front multiplex network door ECU LH connectors.

    2. Disconnect the Q22 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
      Q18-22 (LSWE) - Q22-7 (E) Always Below 1 Ω
      Q19-1 (GND) - Body ground Always Below 1 Ω
      Q18-22 (LSWE) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. Disconnect the Q22 front door lock LH connector.

    2. Disconnect the N12 main body ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Q22-8 (LSSR) - N12-7 (LSFL) Always Below 1 Ω
      Q22-8 (LSSR) - Body ground Always 10 kΩ or higher

    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.

      A01FUBPE16

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Q18-22 (LSWE) - Q19-1 (GND) Always Below 1 Ω

    NG

    REPLACE FRONT MULTIPLEX NETWORK DOOR ECU LH Click here

    OK

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) 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.


    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 R2 rear door lock RH connector.

    2. Disconnect the N13 main body ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      R2-9 (LSSR) - N13-2 (LSWR) Always Below 1 Ω
      R2-10 (E) - Body ground*1 Always Below 1 Ω
      R2-6 (E) - Body ground*2 Always Below 1 Ω
      R2-9 (LSSR) - Body ground Always 10 kΩ or higher

      • *1: w/ Double Locking System

      • *2: w/o Double Locking System


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

  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.


    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 R10 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
      R10-6 (LSSR) - 5C-30 Always Below 1 Ω
      R10-5 (E) - Body ground*1 Always Below 1 Ω
      R10-9 (E) - Body ground*2 Always Below 1 Ω
      R10-6 (LSSR) - Body ground Always 10 kΩ or higher

      • *1: w/ Double Locking System

      • *2: w/o Double Locking System


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  14. INSPECT COWL SIDE JUNCTION BLOCK LH


    1. A01FUQHE01

      Remove the cowl side junction block LH Click here.

    2. Remove the main 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
      A-5 (LSWL) - 5C-30 Always Below 1 Ω

    NG

    REPLACE COWL SIDE JUNCTION BLOCK LH Click here

    OK

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