Front Passenger Side Door Entry Unlock 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. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Main Body / Data List.
5. 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 Pos	Front door RH unlock detection switch signal	UNLOCK or LOCK	UNLOCK: Front door RH unlocked LOCK: Front door RH locked	-

   Body Electrical > Main Body > Data List 

   Tester Display
   FR Door Lock Pos

   OK

   The Techstream display changes correctly in response to the lock/unlock operation of the front passenger door.

   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 [12/2017 - 10/2023] 

Result: 

OK 

See step  3

1. Turn the engine switch off.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Unlock Sensor (Backside)

2. Open and close the front passenger door.
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 front passenger door.
5. Check that the LED of the electrical key transmitter sub-assembly blinks.
6. Read the Data List according to the display on the Techstream.
7. Touch the unlock sensor on the backside of the front door outside handle assembly (for Front Passenger Door).

   HINT: 

   When checking the operation of the unlock 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
   P-Door Touch Sensor	Front passenger door touch sensor (unlock sensor)	OFF or ON	OFF: Front passenger door touch sensor (unlock sensor) not touched ON: Front passenger door 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 Access > Data List 

   Tester Display
   P-Door Touch Sensor

   OK

   The Techstream display changes correctly in response to the operation of the front door outside handle assembly (for Front Passenger 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  4

1. Disconnect the L31 certification ECU (smart key ECU assembly) connector.
2. Disconnect the H7 front door outside handle assembly (for Front Passenger Door) connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   L31-15 (CLG2) - H7-4 (ANT1)	Always	Below 1 Ω
   L31-14 (CG2B) - H7-5 (ANT2)	Always	Below 1 Ω
   L31-15 (CLG2) or H7-4 (ANT1) - Other terminals and body ground	Always	10 kΩ or higher
   L31-14 (CG2B) or H7-5 (ANT2) - Other terminals and body ground	Always	10 kΩ or higher

4. Reconnect the H7 front door outside handle assembly (for Front Passenger 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  5

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Using an oscilloscope, check the waveform.

   OK

   Tester Connection	Condition	Tool Setting	Specified Condition
   L31-15 (CLG2) - G71-18 (E)	Procedure: Engine switch off Electrical key transmitter sub-assembly brought outside vehicle All doors locked Electrical key transmitter sub-assembly not near the vehicle Front passenger door unlock sensor touched	5 V/DIV., 50 ms/DIV.	Pulse generation (See waveform 1)

   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 FRONT PASSENGER 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]