LIGHTING SYSTEM Door Unlock Detection Switch Circuit

DESCRIPTION

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

WIRING DIAGRAM

A003SZPE01
A003TB0E05

INSPECTION PROCEDURE

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 (for LHD)
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      FL Door Lock Pos Front door unlock detection switch LH signal/UNLOCK or LOCK

      UNLOCK: Front door LH unlocked

      LOCK: Front door LH locked

      		 -
      FR Door Lock Pos Front door unlock detection switch RH signal/UNLOCK or LOCK

      UNLOCK: Front door RH unlocked

      LOCK: Front door RH locked

      		 -
      Main Body (for RHD)
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      FL Door Lock Pos Front door unlock detection switch LH signal/UNLOCK or LOCK

      UNLOCK: Front door LH unlocked

      LOCK: Front door LH locked

      		 -
      FR Door Lock Pos Front door unlock detection switch RH signal/UNLOCK or LOCK

      UNLOCK: Front door RH unlocked

      LOCK: Front door RH locked

      		 -
      RL-Door Lock Pos SW (*1) Rear door unlock detection switch LH signal/ON or OFF

      ON: Rear door LH or RH unlocked

      OFF: Rear door LH and RH locked

      		 -
      RR-Door Lock Pos SW (*1) Rear door unlock detection switch RH signal/ON or OFF

      ON: Rear door LH or RH unlocked

      OFF: Rear door LH and RH locked

      		 -

      • *1: w/ Double Locking

      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

    B

    INSPECT FRONT DOOR LOCK ASSEMBLY LH 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

    A

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

  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 I5 front door lock assembly LH connector.

    2. Disconnect the E120 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
      I5-8 (LSSR) - E120-7 (LSFL) Always Below 1 Ω
      I5-8 (LSSR) - Body ground Always 10 kΩ or higher
      I5-7 (E) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

  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 H6 front door lock assembly RH connector.

    2. Disconnect the E120 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

      (Symbols)

      		 Condition Specified Condition
      H6-7 (LSSR) - E120-18 (LSFR) Always Below 1 Ω
      H6-7 (LSSR) - Body ground Always 10 kΩ or higher
      H6-8 (E) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

  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 LH - JUNCTION BLOCK AND BODY GROUND)


    1. Disconnect the K3 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
      Tester Connection Condition Specified Condition
      K3-5 (LSSR) - 2D-25 Always Below 1 Ω
      K3-5 (LSSR) - Body ground Always 10 kΩ or higher
      K3-6 (E) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY


    1. A003RQOE05
      Text in Illustration
      *1

      Component without harness connected

      (Instrument Panel Junction Block Assembly)

      Remove the instrument panel junction block assembly.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      2D-25 - A-5 (LSR) Always Below 1 Ω
      2D-25 - Body ground Always 10 kΩ or higher

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

    OK

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

  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 RH - JUNCTION BLOCK AND BODY GROUND)


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

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      J3-9 (LSSR) - 2B-29 Always Below 1 Ω
      J3-9 (LSSR) - Body ground Always 10 kΩ or higher
      J3-10 (E) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  11. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY


    1. A003RW0E02
      Text in Illustration
      *1

      Component without harness connected

      (Instrument Panel Junction Block Assembly)

      Remove the instrument panel junction block assembly.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      2B-29 - A-5 (LSR) Always Below 1 Ω
      2B-29 - Body ground Always 10 kΩ or higher

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

    OK

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)