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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Accessories & Equipment >> Interior/Illumination Lights >> Lighting System (Int) - Diagnostics & Circuit Tests (2 Of 2) >> Lighting System >> Door Unlock Detection Switch Circuit [11/2023 - ] >> Procedure

Door Unlock Detection Switch Circuit [11/2023 - ]: Procedure

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

      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 ("FR Door Lock Position Switch Status" is not normal) B
      NG ("FL Door Lock Position Switch Status" is not normal) C
      NG ("RR Door Lock Position Switch Status" is not normal) D
      NG ("RL 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 [11/2023 - ] 

    Result: 

    C 

    See step  4

    Result: 

    D 

    See step  6

    Result: 

    E 

    See step  8

    Result: 

    B 

    See step  2

  2. INSPECT FRONT DOOR LOCK WITH MOTOR ASSEMBLY RH 

    Refer to INSPECTION [12/2019 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE FRONT DOOR LOCK WITH MOTOR ASSEMBLY RH. Refer to  REMOVAL [11/2023 - ] 

    Result: 

    OK 

    See step  3

  3. CHECK HARNESS AND CONNECTOR (FRONT DOOR LOCK WITH MOTOR ASSEMBLY RH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) OR BODY GROUND) 
    1. Disconnect the H135 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
      J14-7 (LSSR) - H135-3 (LSFR) Always Below 1 Ω
      J14-7 (LSSR) or H135-3 (LSFR) - Body ground Always 10 kΩ or higher
      J14-8 (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 [11/2023 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  4. INSPECT FRONT DOOR LOCK WITH MOTOR ASSEMBLY LH 

    Refer to INSPECTION [12/2019 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE FRONT DOOR LOCK WITH MOTOR ASSEMBLY LH. Refer to  REMOVAL [11/2023 - ] 

    Result: 

    OK 

    See step  5

  5. CHECK HARNESS AND CONNECTOR (FRONT DOOR LOCK WITH MOTOR ASSEMBLY LH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) OR BODY GROUND) 
    1. Disconnect the H135 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
      J30-8 (LSSR) - H135-9 (LSFL) Always Below 1 Ω
      J30-8 (LSSR) or H135-9 (LSFL) - Body ground Always 10 kΩ or higher
      J30-7 (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 [11/2023 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  6. INSPECT REAR DOOR LOCK WITH MOTOR ASSEMBLY RH 

    Refer to INSPECTION [12/2019 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE REAR DOOR LOCK WITH MOTOR ASSEMBLY RH. Refer to  REMOVAL [11/2023 - ] 

    Result: 

    OK 

    See step  7

  7. CHECK HARNESS AND CONNECTOR (REAR DOOR LOCK WITH MOTOR ASSEMBLY RH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) OR BODY GROUND) 
    1. Disconnect the H136 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
      K3-6 (LSSR) - H136-23 (LSWR) Always Below 1 Ω
      K3-6 (LSSR) or H136-23 (LSWR) - Body ground Always 10 kΩ or higher
      K3-9 (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 [11/2023 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  8. INSPECT REAR DOOR LOCK WITH MOTOR ASSEMBLY LH 

    Refer to INSPECTION [12/2019 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE REAR DOOR LOCK WITH MOTOR ASSEMBLY LH. Refer to  REMOVAL [11/2023 - ] 

    Result: 

    OK 

    See step  9

  9. CHECK HARNESS AND CONNECTOR (REAR DOOR LOCK WITH MOTOR ASSEMBLY LH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) OR BODY GROUND) 
    1. Disconnect the H135 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
      K8-6 (LSSR) - H135-10 (LSWL) Always Below 1 Ω
      K8-6 (LSSR) or H135-10 (LSWL) - Body ground Always 10 kΩ or higher
      K8-9 (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 [11/2023 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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