Driver Side Door Entry Lock Function does not Operate [12/2017 - 10/2023]: Procedure

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 [12/2017 - 10/2023]

   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 [12/2017 - 10/2023] 

Result: 

OK 

See step  2

1. Turn the engine switch off.

   Courtesy 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. Read the Data List according to the display on the Techstream.
5. Touch the lock sensor of the front door outside handle assembly (for Driver Door).

   HINT: 

   • If the door does not lock even when touching the lock sensor, touch it with your palm.
   • When checking the operation of the lock sensor again, make sure to perform the procedure from step (a).

   Body Electrical > Smart Access > 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 Access > Data List 

   Tester Display
   D-Door Trigger Switch

   HINT: 

   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.

   OK

   The Techstream 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 [12/2017 - 09/2018]  , or refer to  REMOVAL [09/2018 - 10/2020]  , or refer to  REMOVAL [10/2020 - 10/2022]  , or refer to  REMOVAL [10/2022 - 10/2023] 

Result: 

NG 

See step  3

1. Disconnect the L31 certification ECU (smart key ECU assembly) connector.
2. Disconnect the H25 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
   L31-17 (CLG1) - H25-4 (ANT1)	Always	Below 1 Ω
   L31-16 (CG1B) - H25-5 (ANT2)	Always	Below 1 Ω
   L31-17 (CLG1) or H25-4 (ANT1) - Other terminals and body ground	Always	10 kΩ or higher
   L31-16 (CG1B) or H25-5 (ANT2) - Other terminals and body ground	Always	10 kΩ or higher

4. Reconnect the H25 front door outside handle assembly (for Driver Door) connector.
5. Reconnect the L31 certification ECU (smart key ECU assembly) connector.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  4

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Using an oscilloscope, check the waveform.

   OK

   Tester Connection	Condition	Tool Setting	Specified Condition
   L31-17 (CLG1) - G71-18 (E)	Procedure: Engine switch off Electrical key transmitter sub-assembly brought outside vehicle All doors closed All doors locked through wireless operation (electrical key transmitter sub-assembly brought outside detection area*) Driver door lock sensor touched	5 V/DIV., 40 ms/DIV.	Pulse generation (See waveform 1)

   *: For details about the entry function detection area, refer to Operation Check.

   Refer to OPERATION CHECK [12/2017 - 10/2023]

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [12/2017 - 09/2018]  , or refer to  REMOVAL [09/2018 - 10/2020]  , or refer to  REMOVAL [10/2020 - 10/2022]  , or refer to  REMOVAL [10/2022 - 10/2023] 

Result: 

NG 

REPLACE FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR DRIVER DOOR). Refer to  DISASSEMBLY [12/2017 - 09/2018]  , or refer to  DISASSEMBLY [09/2018 - 10/2020]  , or refer to  DISASSEMBLY [10/2020 - 10/2022]  , or refer to  DISASSEMBLY [10/2022 - 10/2023]