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Home >> Lexus >> 2020 >> ES 300h Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 188 (Power Door Lock Control System (Except Hybrid) - Diagnostic Codes & Symptom Tests) >> POWER DOOR LOCK CONTROL SYSTEM (for Gasoline Model) >> All Doors LOCK/UNLOCK Functions do not Operate Via Door Key Cylinder [06/2018 - ] >> Procedure

All Doors LOCK/UNLOCK Functions do not Operate Via Door Key Cylinder [06/2018 - ]: Procedure

WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2024 Lexus ES 350, 2024 Lexus ES 250, 2023 Lexus ES 350, 2023 Lexus ES 250, and 2022 Lexus ES 350. However, it is still accessible from the selected car via links, so may be relevant.
  1. READ VALUE USING TECHSTREAM (Door Key SW-Lock, D Door Key SW-UL) 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Body Electrical / Main Body / Data List.
    5. Read the Data List according to the display on the Techstream.

      Body Electrical > Main Body > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Door Key SW-Lock Driver door key-linked lock / unlock switch lock signal OFF or ON OFF: Driver door key cylinder not turned to lock position
      ON: Driver door key cylinder turned to lock position
      -
      D Door Key SW-UL Driver door key-linked lock / unlock switch unlock signal OFF or ON OFF: Driver door key cylinder not turned to unlock position
      ON: Driver door key cylinder turned to unlock position
      -

      Body Electrical > Main Body > Data List 

      Tester Display
      Door Key SW-Lock
      D Door Key SW-UL

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to  REMOVAL [06/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

    Result: 

    NG 

    See step  2

  2. INSPECT FRONT DOOR LOCK WITH MOTOR ASSEMBLY LH 
    1. Remove the front door lock with motor assembly LH.

      Refer to REMOVAL [06/2018 - 08/2020] , or refer to REMOVAL [08/2020 - 08/2021] , or refer to REMOVAL [08/2021 - 09/2022] , or refer to REMOVAL [09/2022 - ]

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

      Refer to INSPECTION [06/2018 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE FRONT DOOR LOCK WITH MOTOR ASSEMBLY LH. Refer to  REMOVAL [06/2018 - 08/2020]  , or refer to  REMOVAL [08/2020 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

    Result: 

    OK 

    See step  3

  3. CHECK HARNESS AND CONNECTOR (FRONT DOOR LOCK WITH MOTOR ASSEMBLY LH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND BODY GROUND) 
    1. Disconnect the G38 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
      J32-9 (L) - G38-18 (L2) Always Below 1 Ω
      J32-10 (UL) - G38-17 (UL3) Always Below 1 Ω
      J32-7 (E) - Body ground Always Below 1 Ω
      J32-9 (L) or G38-18 (L2) - Body ground Always 10 kΩ or higher
      J32-10 (UL) or G38-17 (UL3) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to  REMOVAL [06/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR