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

A001V7CE03
A001V7CE04

CAUTION / NOTICE / HINT

Note

Before replacing the main body ECU (multiplex network body ECU), refer to Service Bulletin*1.


  • *1: w/ Entry and Start System

PROCEDURE


  1. READ VALUE USING GTS


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

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

    5. Read the Data List according to 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 RH unlock detection switch signal LOCK or UNLOCK

      LOCK: Front door RH locked

      UNLOCK: Front door RH unlocked

      		 *1, *2, *3
      FL Door Lock Pos Front door LH unlock detection switch signal LOCK or UNLOCK

      LOCK: Front door LH locked

      UNLOCK: Front door LH unlocked

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

      ON: Rear door RH or LH unlocked

      OFF: Rear door RH and LH locked

      		 *4, *5
      RL-Door Lock Pos SW Rear door RH and LH unlock detection switch signal ON or OFF

      ON: Rear door RH or LH unlocked

      OFF: Rear door RH and LH locked

      		 *4, *5

      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
      Result
      Result Proceed to
      OK A
      "FL Door Lock Pos" is not normal B
      "FR Door Lock Pos" is not normal (*1, *2, *3) C
      Both "RL-Door Lock Pos SW" and "RR-Door Lock Pos SW" are not normal (*4, *5) D

      • *1: for RHD

      • *2: for LHD with Entry and Start System

      • *3: for LHD with Double Locking System

      • *4: w/ Entry and Start System

      • *5: w/ Double Locking System


    A

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

    C

    INSPECT FRONT DOOR LOCK WITH MOTOR ASSEMBLY RH Click here

    D

    INSPECT REAR DOOR LOCK WITH MOTOR ASSEMBLY LH Click here

    B

  2. INSPECT FRONT DOOR LOCK WITH MOTOR ASSEMBLY LH


    1. Remove the front door lock with motor assembly LH.

      Click here

    2. Inspect the front door lock with motor assembly LH.

      Click here

      OK
      Front door lock with motor assembly LH is normal.
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT DOOR LOCK WITH MOTOR ASSEMBLY LH Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (FRONT DOOR LOCK ASSEMBLY LH - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND BODY GROUND)


    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
      Tester Connection Condition Specified Condition
      J4-8 (LSSR) - 3D-13 Always Below 1 Ω
      J4-8 (LSSR) or 3D-13 - Body ground Always 10 kΩ or higher
      J4-7 (E) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY


    1. Remove the instrument panel junction block assembly.


    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.

      A001T17C17
      *a

      Component without harness connected

      (Instrument Panel Junction Block Assembly)

      		 - -
      Standard Resistance
      Tester Connection Condition Specified Condition
      3D-13 - MB-19 (LSFL) Always Below 1 Ω
      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG (for LHD) C
      NG (for RHD) D

    A

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

    B

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

    C

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

    D

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

  5. INSPECT FRONT DOOR LOCK WITH MOTOR ASSEMBLY RH


    1. Remove the front door lock with motor assembly RH.

      Click here

    2. Inspect the front door lock with motor assembly RH.

      Click here

      OK
      Front door lock with motor assembly RH is normal.
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT DOOR LOCK WITH MOTOR ASSEMBLY RH Click here

    OK

  6. CHECK HARNESS AND CONNECTOR (FRONT DOOR LOCK ASSEMBLY RH - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND BODY GROUND)


    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
      Tester Connection Condition Specified Condition
      I4-7 (LSSR) - 3D-12 Always Below 1 Ω
      I4-7 (LSSR) or 3D-12 - Body ground Always 10 kΩ or higher
      I4-8 (E) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY


    1. Remove the instrument panel junction block assembly.


    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.

      A001T17C18
      *a

      Component without harness connected

      (Instrument Panel Junction Block Assembly)

      		 - -
      Standard Resistance
      Tester Connection Condition Specified Condition
      3D-12 - MB-17 (LSFR) Always Below 1 Ω
      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG (for LHD) C
      NG (for RHD) D

    A

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

    B

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

    C

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

    D

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

  8. INSPECT REAR DOOR LOCK WITH MOTOR ASSEMBLY LH


    1. Remove the rear door lock with motor assembly LH.

      Click here

    2. Inspect the rear door lock with motor assembly LH.

      Click here

      OK
      Rear door lock with motor assembly LH is normal.
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE REAR DOOR LOCK WITH MOTOR ASSEMBLY LH Click here

    OK

  9. CHECK HARNESS AND CONNECTOR (REAR DOOR LOCK WITH MOTOR ASSEMBLY LH - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND BODY GROUND)


    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
      w/o Double Locking System:
      Tester Connection Condition Specified Condition
      L1-6 (LSSR) - 3D-14 Always Below 1 Ω
      L1-6 (LSSR) or 3D-14 - Body ground Always 10 kΩ or higher
      L1-9 (E) - Body ground Always Below 1 Ω
      w/ Double Locking System:
      Tester Connection Condition Specified Condition
      L1-5 (LSSR) - 3D-14 Always Below 1 Ω
      L1-5 (LSSR) or 3D-14 - Body ground Always 10 kΩ or higher
      L1-6 (E) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  10. INSPECT REAR DOOR LOCK WITH MOTOR ASSEMBLY RH


    1. Remove the rear door lock with motor assembly RH.

      Click here

    2. Inspect the rear door lock with motor assembly RH.

      Click here

      OK
      Rear door lock with motor assembly RH is normal.
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE REAR DOOR LOCK WITH MOTOR ASSEMBLY RH Click here

    OK

  11. CHECK HARNESS AND CONNECTOR (REAR DOOR LOCK ASSEMBLY RH - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND BODY GROUND)


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

      Standard Resistance
      w/o Double Locking System:
      Tester Connection Condition Specified Condition
      K1-6 (LSSR) - 3D-14 Always Below 1 Ω
      K1-6 (LSSR) or 3D-14 - Body ground Always 10 kΩ or higher
      K1-9 (E) - Body ground Always Below 1 Ω
      w/ Double Locking System:
      Tester Connection Condition Specified Condition
      K1-9 (LSSR) - 3D-14 Always Below 1 Ω
      K1-9 (LSSR) or 3D-14 - Body ground Always 10 kΩ or higher
      K1-10 (E) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  12. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY


    1. Remove the instrument panel junction block assembly.


    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.

      A001T17C19
      *a

      Component without harness connected

      (Instrument Panel Junction Block Assembly)

      		 - -
      Standard Resistance
      Tester Connection Condition Specified Condition
      3D-14 - MB-5 (LSR) Always Below 1 Ω
      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG (for LHD) C
      NG (for RHD) D

    A

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

    B

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

    C

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

    D

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here