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Home >> Lexus >> 2020 >> ES 300h Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 222 (Power Trunk Lid System (Except Hybrid) - Diagnostic Codes & Symptom Tests) >> POWER TRUNK LID SYSTEM (for Gasoline Model) >> Power Trunk Lid does not Operate Using Any Switches [06/2018 - 08/2021] >> Procedure

Power Trunk Lid does not Operate Using Any Switches [06/2018 - 08/2021]: 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. CHECK FOR DTC 
    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 / Back Door / Trouble Codes.
    5. Clear the DTCs.

      Body Electrical > Back Door > Clear DTCs 

    6. Check for DTCs.

      Body Electrical > Back Door > Trouble Codes 

      OK

      DTC is not output.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [06/2018 - 08/2021] 

    Result: 

    OK 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (LUGGAGE CLOSER MOTOR ASSEMBLY - BATTERY AND BODY GROUND) 
    1. Disconnect the R7 luggage closer motor assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      R7-11 (GND) - Body ground Always Below 1 Ω
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      R7-8 (IG) - Body ground Engine switch on (IG) 11 to 14 V
      Engine switch off Below 1 V
      R7-10 (ECUB) - Body ground Always 11 to 14 V
      R7-12 (B) - Body ground Always 11 to 14 V

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  3

  3. READ VALUE USING TECHSTREAM 
    1. Enter the following menus: Body Electrical / Main Body / Data List.
    2. 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
      Trunk Main SW Luggage door opening cancel switch assembly signal OFF or ON OFF: Luggage door opening cancel switch assembly off
      ON: Luggage door opening cancel switch assembly on
      -

      Body Electrical > Main Body > Data List 

      Tester Display
      Trunk Main SW

      OK

      The Data List item changes according to the operation of the luggage door opening cancel switch assembly.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE LUGGAGE CLOSER MOTOR ASSEMBLY. Refer to  REMOVAL [06/2018 - 08/2021] 

    Result: 

    NG 

    See step  4

  4. INSPECT LUGGAGE DOOR OPENING CANCEL SWITCH ASSEMBLY 
    1. Remove the luggage door opening cancel switch assembly.

      Refer to REMOVAL [06/2018 - 08/2021]

    2. Inspect the luggage door opening cancel switch assembly.

      Refer to INSPECTION [06/2018 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE LUGGAGE DOOR OPENING CANCEL SWITCH ASSEMBLY. Refer to  REMOVAL [06/2018 - 08/2021] 

    Result: 

    OK 

    See step  5

  5. CHECK HARNESS AND CONNECTOR (LUGGAGE DOOR OPENING CANCEL SWITCH ASSEMBLY - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND BODY GROUND) 
    1. Disconnect the G37 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
      G61-2 (B) - G37-27 (TMSW) Always Below 1 Ω
      G61-1 (L) - Body ground Always Below 1 Ω
      G61-2 (B) or G37-27 (TMSW) - 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] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR