LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2021 >> Highlander LE, FWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Smart Key System (For Entry) - Symptom Tests (2 Of 2) >> SMART KEY SYSTEM (for Entry Function) >> Driver Side Door Entry Lock Function does not Operate [12/2019 - 11/2023] >> Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Driver Side Door Entry Lock Function does not Operate [12/2019 - 11/2023]: Procedure

  1. CHECK POWER DOOR LOCK CONTROL SYSTEM 
    1. When the door control switch on the multiplex network master switch assembly is operated, check that the doors unlock and lock according to the switch operation.

      Refer to OPERATION CHECK [12/2019 - 11/2023]

      OK

      Door locks operate normally.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    GO TO POWER DOOR LOCK CONTROL SYSTEM 

    Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - 11/2023]

    Result: 

    OK 

    See step  2

  2. CHECK ENTRY OPERATION 
    1. Check that the entry lock function.
      1. Turn the ignition switch off.
        GTY923295Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Lock Sensor
      2. Open and close the driver door.
      3. Hold the electrical key transmitter sub-assembly at the same height as the door outside handle assembly and approximately 0.3 m (0.984 ft.) from the driver door.
      4. Touch the lock sensor of the front door outside handle assembly (groove on the front door outside handle) with 2 or more fingers for 2 seconds or more.

        HINT: 

        • If the door does not lock even when touching the lock sensor for 2 seconds or more, touch it with your palm.
        • When checking the operation of the lock sensor again, make sure to perform the procedure from step (1).
        • When checking the operation of the entry lock function several times, it can be operated up to 2 times consecutively. To operate the function 3 times or more consecutively, the doors need to be unlocked once. However, this is only for the entry lock function, other door lock operations, such as a wireless door lock operation can be performed consecutively.

      Result

      Result Proceed to
      Entry function does not operate normally A
      Entry function operates normally B

    Result: 

    B 

    GO TO CHECK FOR INTERMITTENT PROBLEMS (OPERATION HISTORY) 

    for HV Model: Refer to CHECK FOR INTERMITTENT PROBLEMS [12/2019 - 11/2023]

    for Gasoline Model: Refer to CHECK FOR INTERMITTENT PROBLEMS [12/2019 - 11/2023]

    Result: 

    A 

    See step  3

  3. READ VALUE USING GTS (D-DOOR TRIGGER SWITCH) 
    1. Open and close the driver door.
      GTY923295Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Lock Sensor
    2. Hold the electrical key transmitter sub-assembly at the same height as the door outside handle assembly and approximately 0.3 m (0.984 ft.) from the driver door.
    3. Read the Data List according to the display on the GTS.
    4. Touch the lock sensor of the front door outside handle assembly (groove on the front door outside handle) with 2 or more fingers for 2 seconds or more.

      HINT: 

      • If the door does not lock even when touching the lock sensor for 2 seconds or more, touch it with your palm.
      • When checking the operation of the lock sensor again, make sure to perform the procedure from step (a).
      • When checking the operation of the entry lock function several times, it can be operated up to 2 times consecutively. To operate the function 3 times or more consecutively, the doors need to be unlocked once. However, this is only for the entry lock function, other door lock operations, such as a wireless door lock operation can be performed consecutively.

      Body Electrical > Smart Key > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      D-Door Trigger Switch Driver door touch sensor (lock sensor) OFF or ON OFF: Driver door touch sensor (lock sensor) not touched
      ON: Driver door touch sensor (lock sensor) touched
      • Displays whether the lock sensor is on or off (even if the sensor is touched and contact is maintained, "ON" is displayed only momentarily).
      • Use this Data List item to help determine if there is a lock sensor malfunction when the entry lock function does not operate.

      Body Electrical > Smart Key > Data List 

      Tester Display
      D-Door Trigger Switch

      OK

      The GTS display changes correctly in response to the operation of the front door outside handle assembly (for driver door).

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 

    Refer to REMOVAL [12/2019 - 11/2023]

    Result: 

    NG 

    See step  4

  4. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR DRIVER DOOR)) 
    1. Disconnect the M5 certification ECU (smart key ECU assembly) connector.
    2. Disconnect the J25 front door outside handle assembly (for driver door) connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      M5-17 (CLG1) - J25-6 (ANT1) Always Below 1 Ω
      M5-16 (CG1B) - J25-4 (ANT2) Always Below 1 Ω
      M5-17 (CLG1) or J25-6 (ANT1) - Other terminals and body ground Always 10 kΩ or higher
      M5-16 (CG1B) or J25-4 (ANT2) - Other terminals and body ground Always 10 kΩ or higher
    4. Reconnect the J25 front door outside handle assembly (for driver door) connector.
    5. Reconnect the M5 certification ECU (smart key ECU assembly) connector.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  5

  5. READ VALUE USING GTS (D-DOOR TRIGGER SWITCH) 
    1. Open and close the driver door.
      GTY923295Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Lock Sensor
    2. Hold the electrical key transmitter sub-assembly at the same height as the door outside handle assembly and approximately 0.3 m (0.984 ft.) from the driver door.
    3. Read the Data List according to the display on the GTS.
    4. Touch the lock sensor of the front door outside handle assembly (groove on the front door outside handle) with 2 or more fingers for 2 seconds or more.

      HINT: 

      • If the door does not lock even when touching the lock sensor for 2 seconds or more, touch it with your palm.
      • When checking the operation of the lock sensor again, make sure to perform the procedure from step (a).
      • When checking the operation of the entry lock function several times, it can be operated up to 2 times consecutively. To operate the function 3 times or more consecutively, the doors need to be unlocked once. However, this is only for the entry lock function, other door lock operations, such as a wireless door lock operation can be performed consecutively.

      Body Electrical > Smart Key > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      D-Door Trigger Switch Driver door touch sensor (lock sensor) OFF or ON OFF: Driver door touch sensor (lock sensor) not touched
      ON: Driver door touch sensor (lock sensor) touched
      • Displays whether the lock sensor is on or off (even if the sensor is touched and contact is maintained, "ON" is displayed only momentarily).
      • Use this Data List item to help determine if there is a lock sensor malfunction when the entry lock function does not operate.

      Body Electrical > Smart Key > Data List 

      Tester Display
      D-Door Trigger Switch

      OK

      The GTS display changes correctly in response to the operation of the front door outside handle assembly (for driver door).

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    END (CONNECTOR WAS NOT CONNECTED SECURELY) 

    Result: 

    NG 

    REPLACE FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR DRIVER DOOR) 

    Refer to DISASSEMBLY [12/2019 - 10/2022] , or refer to DISASSEMBLY [10/2022 - 11/2023]

scientia non olet · About LEMON Manuals