LIGHTING SYSTEM Door Unlock Detection Switch Circuit

DESCRIPTION

The main body ECU (multiplex network body ECU) receives a door lock / unlock signal from each door lock assembly.

WIRING DIAGRAM

A005HR8E02

CAUTION / NOTICE / HINT

Note

Initialization is necessary when the main body ECU (multiplex network body ECU) is replaced* Click here.


  • *: w/ Automatic Light Control System

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER (DOOR LOCK POS)


    1. Using the intelligent tester, 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 / 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 Rear door unlock detection switch RH signal / ON or OFF

      ON: Rear door unlocked

      OFF: Rear door locked

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

      ON: Rear door unlocked

      OFF: Rear door locked

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

    B

    INSPECT FRONT DOOR LOCK ASSEMBLY LH Click here

    C

    INSPECT REAR DOOR LOCK ASSEMBLY (RH OR LH) Click here

    D

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

    A

  2. INSPECT FRONT DOOR LOCK ASSEMBLY RH


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

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


    NG

    REPLACE FRONT DOOR LOCK ASSEMBLY RH Click here

    OK

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


    1. Disconnect the F76 main body ECU (multiplex network body ECU) connector.

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      F76-18 (LSFR) - G5-7 (LSSR) Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      F76-18 (LSFR) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G5-8 (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

  5. INSPECT FRONT DOOR LOCK ASSEMBLY LH


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

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


    NG

    REPLACE FRONT DOOR LOCK ASSEMBLY LH Click here

    OK

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


    1. Disconnect the F76 main body ECU (multiplex network body ECU) connector.

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      F76-7 (LSFL) - H5-8 (LSSR) Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      F76-7 (LSFL) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H5-7 (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

  8. INSPECT REAR DOOR LOCK ASSEMBLY (RH OR LH)


    1. Remove the rear door lock assembly Click here.

    2. Inspect the rear door lock assembly Click here.


    NG

    REPLACE REAR DOOR LOCK ASSEMBLY Click here

    OK

  9. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK - REAR DOOR LOCK (RH OR LH))


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

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

      Standard Resistance (Check for Open)
      w/ Double Locking
      for RH
      Tester Connection Condition Specified Condition
      I3-9 (LSSR) - 3D-25 Always Below 1 Ω
      for LH
      Tester Connection Condition Specified Condition
      J3-5 (LSSR) - 3D-24 Always Below 1 Ω
      w/o Double Locking
      for RH
      Tester Connection Condition Specified Condition
      I3-6 (LSSR) - 3D-25 Always Below 1 Ω
      for LH
      Tester Connection Condition Specified Condition
      J3-6 (LSSR) - 3D-24 Always Below 1 Ω
      Standard Resistance (Check for Short)
      for RH
      Tester Connection Condition Specified Condition
      3D-25 - Body ground Always 10 kΩ or higher
      for LH
      Tester Connection Condition Specified Condition
      3D-24 - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  10. CHECK HARNESS AND CONNECTOR (REAR DOOR LOCK (RH OR LH) - BODY GROUND)


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

      Standard Resistance
      w/ Double Locking
      for RH
      Tester Connection Condition Specified Condition
      I3-10 (E) - Body ground Always Below 1 Ω
      for LH
      Tester Connection Condition Specified Condition
      J3-6 (E) - Body ground Always Below 1 Ω
      w/o Double Locking
      for RH
      Tester Connection Condition Specified Condition
      I3-9 (E) - Body ground Always Below 1 Ω
      for LH
      Tester Connection Condition Specified Condition
      J3-9 (E) - 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 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.

      A005K5ME02
      Text in Illustration
      *a

      Component without harness connected

      (Instrument Panel Junction Block Assembly)

      		 - -
      Standard Resistance
      Tester Connection Condition Specified Condition
      3D-24 - MB-5 (LSR) Always Below 1 Ω
      3D-25 - MB-5 (LSR) Always Below 1 Ω

    OK

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

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here