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DTC B2251-01: Back Door Closer Switch General Electrical Failure [10/2023 - 11/2024]: Procedure

WARNING: This page is about a different car, the 2025 Toyota RAV4 and 2024 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.
  1. READ VALUE USING GTS 
    1. Read the Data List according to the display on the GTS.

      Body Electrical > Back Door > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Half Latch Switch Latch switch signal ON or OFF OFF: Half latch position → full latch position -

      Body Electrical > Back Door > Data List 

      Tester Display
      Half Latch Switch

      Result

      Result Proceed to
      The value of Half Latch Switch is OFF A
      None of the above conditions are met B

    Result: 

    B 

    See step  7

    Result: 

    A 

    See step  2

  2. READ VALUE USING GTS 
    1. Read the Data List according to the display on the GTS.

      Body Electrical > Back Door > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Half Latch Switch Latch switch signal ON or OFF ON: When in the open latch or overstroke position -

      Body Electrical > Back Door > Data List 

      Tester Display
      Half Latch Switch

      Result

      Result Proceed to
      The value of Half Latch Switch is ON A
      None of the above conditions are met B

    Result: 

    B 

    See step  7

    Result: 

    A 

    See step  3

  3. READ VALUE USING GTS 
    1. Read the Data List according to the display on the GTS.

      Body Electrical > Back Door > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Pawl Switch Pawl switch signal ON or OFF OFF: Back door lock motor except open latched -

      Body Electrical > Back Door > Data List 

      Tester Display
      Pawl Switch

      Result

      Result Proceed to
      The value of Pawl Switch is OFF A
      None of the above conditions are met B

    Result: 

    B 

    See step  7

    Result: 

    A 

    See step  4

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

      Body Electrical > Back Door > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Pawl Switch Pawl switch signal ON or OFF ON: Back door lock motor open-latched -

      Body Electrical > Back Door > Data List 

      Tester Display
      Pawl Switch

      Result

      Result Proceed to
      The value of Pawl Switch is ON A
      None of the above conditions are met B

    Result: 

    B 

    See step  7

    Result: 

    A 

    See step  5

  5. READ VALUE USING GTS 
    1. Read the Data List according to the display on the GTS.

      Body Electrical > Back Door > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Courtesy Switch Back door courtesy switch signal ON or OFF OFF: Full latch position → overstroke position -

      Body Electrical > Back Door > Data List 

      Tester Display
      Courtesy Switch

      Result

      Result Proceed to
      The value of Courtesy Switch is OFF A
      None of the above conditions are met B

    Result: 

    B 

    See step  7

    Result: 

    A 

    See step  6

  6. READ VALUE USING GTS 
    1. Read the Data List according to the display on the GTS.

      Body Electrical > Back Door > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Courtesy Switch Back door courtesy switch signal ON or OFF ON: Open latch position → half latch position -

      Body Electrical > Back Door > Data List 

      Tester Display
      Courtesy Switch

      Result

      Result Proceed to
      The value of Courtesy Switch is ON A
      None of the above conditions are met B

    Result: 

    A 

    REPLACE MULTIPLEX NETWORK DOOR ECU 

    Refer to REMOVAL [10/2023 - ]

    Result: 

    B 

    See step  7

  7. INSPECT BACK DOOR LOCK WITH COURTESY LIGHT SWITCH ASSEMBLY 

    Refer to INSPECTION [11/2018 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE BACK DOOR LOCK WITH COURTESY LIGHT SWITCH ASSEMBLY 

    Refer to REMOVAL [11/2018 - ]

    Result: 

    OK 

    See step  8

  8. CHECK HARNESS AND CONNECTOR (BACK DOOR LOCK WITH COURTESY LIGHT SWITCH ASSEMBLY - MULTIPLEX NETWORK DOOR ECU AND BODY GROUND) 
    1. Disconnect the 4H instrument panel junction block assembly connector.
    2. Disconnect the R14 back door lock with courtesy light switch assembly connector.
    3. Disconnect the R26 multiplex network door ECU connector.
    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      R14-3 (CLS) - R26-5 (HAF) Always Below 1 Ω
      R14-2 (FSW) - R26-13 (PAWL) Always Below 1 Ω
      R14-4 (CTY) - R26-3 (FUL) Always Below 1 Ω
      R14-1 (E) - Body ground Always Below 1 Ω
      R14-3 (CLS) or R26-5 (HAF) - Body ground Always 10 kΩ or higher
      R14-2 (FSW) or R26-13 (PAWL) - Body ground Always 10 kΩ or higher
      R14-4 (CTY) or R26-3 (FUL) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  9

  9. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - MULTIPLEX NETWORK DOOR ECU) 
    1. Disconnect the 4H instrument panel junction block assembly connector.
    2. Disconnect the R14 back door lock with courtesy light switch assembly connector.
    3. Disconnect the R26 multiplex network door ECU connector.
    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      R26-3 (FUL) or 4H-34 - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  10

  10. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY 
    1. Remove the instrument panel junction block assembly.

      Refer to REMOVAL [10/2023 - ]

      GTY1177503Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Instrument Panel Junction Block Assembly)      		 - -
    2. Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.

      Refer to INSTALLATION [08/2020 - ]

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      A-4 (BCTY) - 4H-34 Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY 

    Refer to REMOVAL [10/2023 - ]

    Result: 

    OK 

    See step  11

  11. READ VALUE USING GTS 
    1. Disconnect the R30 multiplex network door ECU connector.
    2. Read the Data List according to the display on the GTS.

      for Type A:

      Body Electrical > Main Body > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Back Door Courtesy Switch Status Back door courtesy light switch signal Close or Open Close: Back door closed
      Open: Back door open      		 -

      Body Electrical > Main Body > Data List 

      Tester Display
      Back Door Courtesy Switch Status

      for Type B:

      Body Electrical > Main Body > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Back Door Courtesy SW Back door courtesy switch signal ON or OFF ON: Back door open
      OFF: Back door closed      		 -

      Body Electrical > Main Body > Data List 

      Tester Display
      Back Door Courtesy SW

      OK

      The display is as specified in the normal condition column.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE MULTIPLEX NETWORK DOOR ECU 

    Refer to REMOVAL [10/2023 - ]

    Result: 

    NG 

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) 

    Refer to REMOVAL [10/2023 - ]

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