LIGHTING SYSTEM Door Unlock Detection Switch Circuit

DTC Code DTC Name
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

E270024E02

CAUTION / NOTICE / HINT

Note:

When replacing the main body ECU (multiplex network body ECU), make sure to replace it with a new one.

PROCEDURE

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

    1. Using the GTS, read the Data List.

      Click here

      Body Electrical > Main Body > Data List

      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

      LH and RH side rear door unlock detection switch signal

      ON or OFF

      ON: LH or RH side rear door unlocked

      OFF: LH and RH side rear door locked

      w/ Entry and Start System or Theft Deterrent System

      RL-Door Lock Pos SW

      LH and RH side rear door unlock detection switch signal

      ON or OFF

      ON: LH or RH side rear door unlocked

      OFF: LH and RH side rear door locked

      w/ Entry and Start System or Theft Deterrent System

      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

      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 does not operate) (w/ Entry and Start System or Theft Deterrent System)

      D
    A

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    Click here

    C

    INSPECT FRONT DOOR WITH MOTOR LOCK ASSEMBLY LHClick here

    D

    INSPECT REAR DOOR WITH MOTOR LOCK ASSEMBLY LHClick here

    B

  2. INSPECT FRONT DOOR WITH MOTOR LOCK ASSEMBLY RH

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

      Click here

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

      Click here

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE FRONT DOOR WITH MOTOR LOCK ASSEMBLY RH

    Click here

    OK

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

    1. Disconnect the G78 main body ECU (multiplex network body ECU) connector.

    2. Disconnect the I10 front door with motor lock assembly RH connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      I10-7 (LSSR) - G78-18 (LSFR)

      Always

      Below 1 Ω

      I10-8 (E) - Body ground

      Always

      Below 1 Ω

      I10-7 (LSSR) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

    for LHD:

    Click here

    for RHD:

    Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  4. INSPECT FRONT DOOR WITH MOTOR LOCK ASSEMBLY LH

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

      Click here

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

      Click here

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE FRONT DOOR WITH MOTOR LOCK ASSEMBLY LH

    Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (FRONT DOOR WITH MOTOR LOCK ASSEMBLY LH - MAIN BODY ECU AND BODY GROUND)

    1. Disconnect the G78 main body ECU (multiplex network body ECU) connector.

    2. Disconnect the J10 front door with motor lock assembly LH connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      J10-8 (LSSR) - G78-7 (LSFL)

      Always

      Below 1 Ω

      J10-7 (E) - Body ground

      Always

      Below 1 Ω

      J10-8 (LSSR) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

    for LHD:

    Click here

    for RHD:

    Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  6. INSPECT REAR DOOR WITH MOTOR LOCK ASSEMBLY LH

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

      Click here

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

      Click here

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE REAR DOOR WITH MOTOR LOCK ASSEMBLY LH

    Click here

    OK

  7. INSPECT REAR DOOR WITH MOTOR LOCK ASSEMBLY RH

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

      Click here

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

      Click here

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE REAR DOOR WITH MOTOR LOCK ASSEMBLY RH

    Click here

    OK

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

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

    2. Disconnect the L4 rear door with motor lock assembly LH connector.

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

      Standard Resistance

      w/ Double Locking System

      Tester Connection

      Condition

      Specified Condition

      L4-5 (LSSR) - 3E-32

      Always

      Below 1 Ω

      L4-6 (E) - Body ground

      Always

      Below 1 Ω

      L4-5 (LSSR) - Body ground

      Always

      10 kΩ or higher

      w/o Double Locking System

      Tester Connection

      Condition

      Specified Condition

      L4-6 (LSSR) - 3E-32

      Always

      Below 1 Ω

      L4-9 (E) - Body ground

      Always

      Below 1 Ω

      L4-6 (LSSR) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

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

    2. Disconnect the K4 rear door with motor lock assembly RH connector.

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

      Standard Resistance

      w/ Double Locking System

      Tester Connection

      Condition

      Specified Condition

      K4-9 (LSSR) - 3C-41

      Always

      Below 1 Ω

      K4-10 (E) - Body ground

      Always

      Below 1 Ω

      K4-9 (LSSR) - Body ground

      Always

      10 kΩ or higher

      w/o Double Locking System

      Tester Connection

      Condition

      Specified Condition

      K4-8 (LSSR) - 3C-41

      Always

      Below 1 Ω

      K4-9 (E) - Body ground

      Always

      Below 1 Ω

      K4-8 (LSSR) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  10. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

    1. E270729N01

      Remove the instrument panel junction block assembly.

      for LHD:

      Click here

      for RHD:

      Click here

    2. Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.

      for LHD:

      Click here

      for RHD:

      Click here

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      A-5 (LSR) - 3E-32

      Always

      Below 1 Ω

      A-5 (LSR) - 3C-41

      Always

      Below 1 Ω

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

    for LHD:

    Click here

    for RHD:

    Click here

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

    for LHD:

    Click here

    for RHD:

    Click here