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

A012I9FE24

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

      		 -
      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 unlock detection switch signal ON or OFF

      ON: Rear door RH or LH unlocked

      OFF: Rear door RH and LH locked

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

      ON: Rear door RH or LH unlocked

      OFF: Rear door RH and 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
      Result
      Result Proceed to
      OK A
      "FL Door Lock Pos" is not normal B
      "FR Door Lock Pos" is not normal C
      "RL-Door Lock Pos SW" is not normal D
      "RR-Door Lock Pos SW" is not normal E
      Both "RL-Door Lock Pos SW" and "RR-Door Lock Pos SW" are not normal F

    A

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 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

    F

    INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

    B

  2. 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

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

    NG

    REPLACE FRONT DOOR LOCK ASSEMBLY LH Click here

    OK

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


    1. Disconnect the E22 main body ECU (multiplex network body ECU) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H6-8 (LSSR) - E22-7 (LSFL) Always Below 1 Ω
      H6-8 (LSSR) - Body ground Always 10 kΩ or higher
      H6-7 (E) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) for RHD: Click here for LHD: Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  4. 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

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

    NG

    REPLACE FRONT DOOR LOCK ASSEMBLY RH Click here

    OK

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


    1. Disconnect the E22 main body ECU (multiplex network body ECU) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G6-7 (LSSR) - E22-18 (LSFR) Always Below 1 Ω
      G6-7 (LSSR) - Body ground Always 10 kΩ or higher
      G6-8 (E) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) for RHD: Click here for LHD: Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  6. INSPECT REAR DOOR LOCK ASSEMBLY LH


    1. Remove the rear door lock assembly LH.

      Click here

    2. Inspect the rear door lock assembly LH.

      Click here

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

    NG

    REPLACE REAR DOOR LOCK ASSEMBLY LH Click here

    OK

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


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

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

      Standard Resistance
      for RHD
      Tester Connection Condition Specified Condition
      K4-5 (LSSR) - 3E-37 Always Below 1 Ω
      K4-5 (LSSR) - Body ground Always 10 kΩ or higher
      K4-6 (E) - Body ground Always Below 1 Ω
      for LHD
      Tester Connection Condition Specified Condition
      K4-6 (LSSR) - 3E-37 Always Below 1 Ω
      K4-6 (LSSR) - Body ground Always 10 kΩ or higher
      K4-9 (E) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. 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.

      A012GGWC06
      *a

      Component without harness connected

      (Instrument Panel Junction Block Assembly)

      		 - -
      Standard Resistance
      Tester Connection Condition Specified Condition
      3E-37 - MB-5 (LSR) Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) for RHD: Click here for LHD: Click here

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY for RHD: Click here for LHD: Click here

  9. INSPECT REAR DOOR LOCK ASSEMBLY RH


    1. Remove the rear door lock assembly RH.

      Click here

    2. Inspect the rear door lock assembly RH.

      Click here

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

    NG

    REPLACE REAR DOOR LOCK ASSEMBLY RH Click here

    OK

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


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

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

      Standard Resistance
      for RHD
      Tester Connection Condition Specified Condition
      J4-9 (LSSR) - 3E-22 Always Below 1 Ω
      J4-9 (LSSR) - Body ground Always 10 kΩ or higher
      J4-10 (E) - Body ground Always Below 1 Ω
      for LHD
      Tester Connection Condition Specified Condition
      J4-6 (LSSR) - 3E-22 Always Below 1 Ω
      J4-6 (LSSR) - Body ground Always 10 kΩ or higher
      J4-9 (E) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  11. 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.

      A012GGWC06
      *a

      Component without harness connected

      (Instrument Panel Junction Block Assembly)

      		 - -
      Standard Resistance
      Tester Connection Condition Specified Condition
      3E-22 - MB-5 (LSR) Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) for RHD: Click here for LHD: Click here

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY for RHD: Click here for LHD: Click here

  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.

      A012GGWC06
      *a

      Component without harness connected

      (Instrument Panel Junction Block Assembly)

      		 - -
      Standard Resistance
      Tester Connection Condition Specified Condition
      3E-37 - MB-5 (LSR) Always Below 1 Ω
      3E-22 - MB-5 (LSR) Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) for RHD: Click here for LHD: Click here

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY for RHD: Click here for LHD: Click here