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Home >> Toyota >> 2021 >> Venza LE >> Repair and Diagnosis (Single Page) >> Body & Frame >> Door Locks >> Smart Key System (For Entry Function) - Diagnostic Codes & Symptom Tests (1 Of 2) >> SMART KEY SYSTEM (for Entry Function) >> Rear Door LH Entry Unlock Function does not Operate [07/2020 - ] >> Procedure
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Rear Door LH Entry Unlock Function does not Operate [07/2020 - ]: 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 [07/2020 - ]

      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 [07/2020 - ] 

    Result: 

    OK 

    See step  2

  2. CHECK ENTRY OPERATION 
    1. Check the entry unlock function.
      1. Turn the ignition switch off.
        GTY1008881Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Unlock Sensor (Backside)

        The illustrations shown are examples only.

      2. Open and close the rear door LH.
      3. With the electrical key transmitter sub-assembly outside of the vehicle, press the lock switch of the electrical key transmitter sub-assembly to lock all of the doors.
      4. 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 rear door LH.
      5. Check that the LED of the electrical key transmitter sub-assembly blinks.
      6. Touch the unlock sensor on the backside of the rear door outside handle assembly (for driver side) for 2 seconds or more.*
        1. *: Perform this step 3 seconds or more after performing step (3).

        HINT: 

        When checking the operation of the unlock sensor again, make sure to perform the procedure from step (1).

      Result

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

    Result: 

    B 

    GO TO CHECK FOR INTERMITTENT PROBLEMS (VEHICLE CONTROL HISTORY (ROB)). Refer to  CHECK FOR INTERMITTENT PROBLEMS [07/2020 - ] 

    Result: 

    A 

    See step  3

  3. READ VALUE USING GTS (RL DOOR LOCK POSITION SWITCH STATUS) 
    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
      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
      RL Door Lock Position Switch Status

      OK

      The GTS display changes correctly in response to the lock/unlock operation of the rear door LH.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    GO TO LIGHTING SYSTEM (Proceed to Door Unlock Detection Switch Circuit). Refer to  Door Unlock Detection Switch Circuit [07/2020 - ] 

    Result: 

    OK 

    See step  4

  4. READ VALUE USING GTS (REAR DRIVER SIDE UNLOCK SENSOR) 
    1. Open and close the rear door LH.
      GTY1008881Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Unlock Sensor (Backside)

      The illustrations shown are examples only.

    2. With the electrical key transmitter sub-assembly outside of the vehicle, press the lock switch of the electrical key transmitter sub-assembly to lock all of the doors.
    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 rear door LH.
    4. Check that the LED of the electrical key transmitter sub-assembly blinks.
    5. Read the Data List according to the display on the GTS.
    6. Touch the unlock sensor on the backside of the rear door outside handle assembly (for driver side) for 2 seconds or more.*
      1. *: Perform this step 3 seconds or more after performing step (b).

      HINT: 

      When checking the operation of the unlock sensor again, make sure to perform the procedure from step (a).

      Body Electrical > Smart Key > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Rear Driver Side Unlock Sensor Rear door LH touch sensor (unlock sensor) OFF or ON OFF: Rear door LH touch sensor (unlock sensor) not touched
      ON: Rear door LH touch sensor (unlock sensor) touched
      • Displays whether the unlock 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 an unlock sensor malfunction when the entry unlock function does not operate.

      Body Electrical > Smart Key > Data List 

      Tester Display
      Rear Driver Side Unlock Sensor

      OK

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

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [07/2020 - ] 

    Result: 

    NG 

    See step  5

  5. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - REAR DOOR OUTSIDE HANDLE ASSEMBLY (FOR DRIVER SIDE)) 
    1. Disconnect the K6 certification ECU (smart key ECU assembly) connector.
    2. Disconnect the H8 rear door outside handle assembly (for driver side) connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      K6-27 (CLG3) - H8-4 (ANT1) Always Below 1 Ω
      K6-26 (CG3B) - H8-6 (ANT2) Always Below 1 Ω
      K6-27 (CLG3) or H8-4 (ANT1) - Other terminals and body ground Always 10 kΩ or higher
      K6-26 (CG3B) or H8-6 (ANT2) - Other terminals and body ground Always 10 kΩ or higher
    4. Reconnect the H8 rear door outside handle assembly (for driver side) connector.
    5. Reconnect the K6 certification ECU (smart key ECU assembly) connector.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  6

  6. READ VALUE USING GTS (REAR DRIVER SIDE UNLOCK SENSOR) 
    1. Open and close the rear door LH.
      GTY1008881Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Unlock Sensor (Backside)

      The illustrations shown are examples only.

    2. With the electrical key transmitter sub-assembly outside of the vehicle, press the lock switch of the electrical key transmitter sub-assembly to lock all of the doors.
    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 rear door LH.
    4. Check that the LED of the electrical key transmitter sub-assembly blinks.
    5. Read the Data List according to the display on the GTS.
    6. Touch the unlock sensor on the backside of the rear door outside handle assembly (for driver side) for 2 seconds or more.*
      1. *: Perform this step 3 seconds or more after performing step (b).

      HINT: 

      When checking the operation of the unlock sensor again, make sure to perform the procedure from step (a).

      Body Electrical > Smart Key > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Rear Driver Side Unlock Sensor Rear door LH touch sensor (unlock sensor) OFF or ON OFF: Rear door LH touch sensor (unlock sensor) not touched
      ON: Rear door LH touch sensor (unlock sensor) touched
      • Displays whether the unlock 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 an unlock sensor malfunction when the entry unlock function does not operate.

      Body Electrical > Smart Key > Data List 

      Tester Display
      Rear Driver Side Unlock Sensor

      OK

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

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    END (CONNECTOR WAS NOT CONNECTED SECURELY) 

    Result: 

    NG 

    REPLACE REAR DOOR OUTSIDE HANDLE ASSEMBLY (FOR DRIVER SIDE). Refer to  DISASSEMBLY [07/2020 - 12/2021]  , or refer to  DISASSEMBLY [12/2021 - 10/2022]  , or refer to  DISASSEMBLY [10/2022 - ] 

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