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

  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 [11/2023 - ] 

    Result: 

    B 

    See step  7

  7. INSPECT BACK DOOR LOCK WITH COURTESY LIGHT SWITCH ASSEMBLY 

    Refer to INSPECTION [12/2019 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE BACK DOOR LOCK WITH COURTESY LIGHT SWITCH ASSEMBLY. Refer to  REMOVAL [12/2019 - ] 

    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) 

    Pre-procedure1

    1. Disconnect the W14 back door lock with courtesy light switch assembly connector.
    2. Disconnect the W30 multiplex network door ECU connector.

      Procedure1

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      W14-3 (CLS) - W30-5 (HAF) Always Below 1 Ω
      W14-2 (FSW) - W30-13 (PAWL) Always Below 1 Ω
      W14-4 (CTY) - W30-3 (FUL) Always Below 1 Ω
      W14-1 (E) - Body ground Always Below 1 Ω
      W14-3 (CLS) or W30-5 (HAF) - Body ground Always 10 kΩ or higher
      W14-2 (FSW) or W30-13 (PAWL) - Body ground Always 10 kΩ or higher
      W14-4 (CTY) or W30-3 (FUL) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    4. None

    Result: 

    OK 

    REPLACE MULTIPLEX NETWORK DOOR ECU. Refer to  REMOVAL [11/2023 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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