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Door Unlock Detection Switch Circuit [09/2022 - 11/2022]: Procedure

WARNING: This page is about a different car, the 2023 Toyota GR Corolla and 2023 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.
  1. CONFIRM MODEL 
    1. Choose the model to be inspected.

      Result

      Result Proceed to
      for Sedan without Unlock Detection Switch (for Rear Door Lock with Motor Assembly) A
      w/ Unlock Detection Switch (for Rear Door Lock with Motor Assembly) B

    Result: 

    B 

    See step  3

    Result: 

    A 

    See step  2

  2. READ VALUE USING TECHSTREAM 
    1. 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
      FR Door Lock Position Switch Status Front door RH unlock detection switch signal Lock or Unlock Lock: Front door RH locked
      Unlock: Front door RH unlocked      		 -
      FL Door Lock Position Switch Status Front door LH unlock detection switch signal Lock or Unlock Lock: Front door LH locked
      Unlock: Front door LH unlocked      		 -

      Body Electrical > Main Body > Data List 

      Tester Display
      FR Door Lock Position Switch Status
      FL Door Lock Position Switch Status

      OK

      Normal conditions listed above are displayed.

      Result

      Result Proceed to
      OK A
      NG ("FL Door Lock Position Switch Status" is not normal) B
      NG ("FR Door Lock Position Switch Status" is not normal) C

    Result: 

    A 

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 

    Refer to PROBLEM SYMPTOMS TABLE [09/2022 - 11/2022] 

    Result: 

    B 

    See step  4

    Result: 

    C 

    See step  6

  3. READ VALUE USING TECHSTREAM 
    1. 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
      FR Door Lock Position Switch Status Front door RH unlock detection switch signal Lock or Unlock Lock: Front door RH locked
      Unlock: Front door RH unlocked      		 -
      FL Door Lock Position Switch Status Front door LH unlock detection switch signal Lock or Unlock Lock: Front door LH locked
      Unlock: Front door LH unlocked      		 -
      RR Door Lock Position Switch Status Rear door RH unlock detection switch signal Lock or Unlock Lock: Rear door RH locked
      Unlock: Rear door RH unlocked      		 -
      RL Door Lock Position Switch Status Rear door LH unlock detection switch signal Lock or Unlock Lock: Rear door LH locked
      Unlock: Rear door LH unlocked      		 -

      Body Electrical > Main Body > Data List 

      Tester Display
      FR Door Lock Position Switch Status
      FL Door Lock Position Switch Status
      RR Door Lock Position Switch Status
      RL Door Lock Position Switch Status

      OK

      Normal conditions listed above are displayed.

      Result

      Result Proceed to
      OK A
      NG ("FL Door Lock Position Switch Status" is not normal) B
      NG ("FR Door Lock Position Switch Status" is not normal) C
      NG ("RL Door Lock Position Switch Status" is not normal) D
      NG ("RR Door Lock Position Switch Status" is not normal) E

    Result: 

    A 

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 

    Refer to PROBLEM SYMPTOMS TABLE [09/2022 - 11/2022] 

    Result: 

    C 

    See step  6

    Result: 

    D 

    See step  8

    Result: 

    E 

    See step  10

    Result: 

    B 

    See step  4

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

      Refer to INSPECTION [09/2022 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE FRONT DOOR LOCK WITH MOTOR ASSEMBLY LH 

    Refer to REMOVAL [09/2022 - 11/2022]

    Result: 

    OK 

    See step  5

  5. CHECK HARNESS AND CONNECTOR (FRONT DOOR LOCK WITH MOTOR ASSEMBLY LH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND BODY GROUND) 
    1. Disconnect the I85 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
      L4-8 (LSSR) - I85-9 (LSFL) Always Below 1 Ω
      L4-8 (LSSR) or I85-9 (LSFL) - Body ground Always 10 kΩ or higher
      L4-10 (E) - Body ground Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) 

    Refer to REMOVAL [09/2022 - 11/2022]

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  6. INSPECT FRONT DOOR LOCK WITH MOTOR ASSEMBLY RH 
    1. Inspect the front door lock with motor assembly RH.

      Refer to INSPECTION [09/2022 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE FRONT DOOR LOCK WITH MOTOR ASSEMBLY RH 

    Refer to REMOVAL [09/2022 - 11/2022]

    Result: 

    OK 

    See step  7

  7. CHECK HARNESS AND CONNECTOR (FRONT DOOR LOCK WITH MOTOR ASSEMBLY RH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND BODY GROUND) 
    1. Disconnect the I85 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
      K5-7 (LSSR) - I85-3 (LSFR) Always Below 1 Ω
      K5-7 (LSSR) or I85-3 (LSFR) - Body ground Always 10 kΩ or higher
      K5-5 (E) - Body ground Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) 

    Refer to REMOVAL [09/2022 - 11/2022]

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  8. INSPECT REAR DOOR LOCK WITH MOTOR ASSEMBLY LH 
    1. Inspect the rear door lock with motor assembly LH.

      Refer to INSPECTION [09/2022 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE REAR DOOR LOCK WITH MOTOR ASSEMBLY LH 

    Refer to REMOVAL [09/2022 - 11/2022]

    Result: 

    OK 

    See step  9

  9. CHECK HARNESS AND CONNECTOR (REAR DOOR LOCK WITH MOTOR ASSEMBLY LH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND BODY GROUND) 
    1. Disconnect the I85 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
      N1-6 (LSSR) - I85-10 (LSWL) Always Below 1 Ω
      N1-6 (LSSR) or I85-10 (LSWL) - Body ground Always 10 kΩ or higher
      N1-9 (E) - Body ground Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) 

    Refer to REMOVAL [09/2022 - 11/2022]

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  10. INSPECT REAR DOOR LOCK WITH MOTOR ASSEMBLY RH 
    1. Inspect the rear door lock with motor assembly RH.

      Refer to INSPECTION [09/2022 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE REAR DOOR LOCK WITH MOTOR ASSEMBLY RH 

    Refer to REMOVAL [09/2022 - 11/2022]

    Result: 

    OK 

    See step  11

  11. CHECK HARNESS AND CONNECTOR (REAR DOOR LOCK WITH MOTOR ASSEMBLY RH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND BODY GROUND) 
    1. Disconnect the I85 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
      M1-6 (LSSR) - I86-23 (LSWR) Always Below 1 Ω
      M1-6 (LSSR) or I86-23 (LSWR) - Body ground Always 10 kΩ or higher
      M1-9 (E) - Body ground Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) 

    Refer to REMOVAL [09/2022 - 11/2022]

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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