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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) >> DTC B2251-01: Back Door Closer Switch General Electrical Failure [08/2021 - ] >> Procedure

DTC B2251-01: Back Door Closer Switch General Electrical Failure [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. CLEAR DTC 
    1. Clear the DTCs.

      Body Electrical > Back Door > Clear DTCs 

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  2

  2. DTC REPRODUCTION TEST 
    1. Wait for approximately 10 seconds.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  3

  3. CHECK FOR DTC 
    1. Check for DTCs.

      Body Electrical > Back Door > Trouble Codes 

      Result

      Result Proceed to
      B2251-01 is not output A
      B2251-01 is output B

    Result: 

    A 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ] 

    Result: 

    B 

    See step  4

  4. READ VALUE USING TECHSTREAM 
    1. Read the Data List according to the display on the Techstream.

      Body Electrical > Back Door > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Half Latch Switch Luggage door closer assembly (half latch switch) signal OFF or ON OFF: Luggage door closer assembly full-latched or half-latched
      ON: Luggage door closer assembly open-latched      		 -
      Pawl Switch Luggage door closer assembly (pawl switch) signal OFF or ON OFF: Luggage door closer assembly except half -latched
      ON: Luggage door closer assembly half-latched      		 -

      Body Electrical > Back Door > Data List 

      Tester Display
      Half Latch Switch
      Pawl Switch

      OK

      The Data List display changes according to luggage compartment door operation.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

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

    Result: 

    NG 

    See step  5

  5. INSPECT LUGGAGE DOOR CLOSER ASSEMBLY 
    1. Remove the luggage door closer assembly.

      Refer to REMOVAL [06/2018 - ]

    2. Inspect the luggage door closer assembly.

      Refer to INSPECTION [06/2018 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE LUGGAGE DOOR CLOSER ASSEMBLY. Refer to  REMOVAL [06/2018 - ] 

    Result: 

    OK 

    See step  6

  6. CHECK HARNESS AND CONNECTOR (LUGGAGE CLOSER MOTOR ASSEMBLY - LUGGAGE DOOR CLOSER ASSEMBLY) 
    1. Disconnect the R24 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
      R24-3 (HAF) - R18-6 (FSW) Always Below 1 Ω
      R24-14 (PAWL) - R18-11 (CLS) Always Below 1 Ω
      R24-3 (HAF) or R18-6 (FSW) - Body ground Always 10 kΩ or higher
      R24-14 (PAWL) or R18-11 (CLS) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

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

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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