Rear Door LH Entry Unlock Function does not Operate [10/2015 - ]: Procedure

1. When the door control switch on the power window regulator master switch assembly is operated, check that the doors unlock and lock according to the switch operation.

   Refer to OPERATION CHECK [10/2015 - ]

   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 [10/2015 - ] 

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
   RL-Door Lock Pos SW	Rear door LH unlock detection switch signal	ON or OFF	ON: Rear door LH unlocked OFF: Rear door LH locked	-

   Body Electrical > Main Body > Data List 

   Tester Display
   RL-Door Lock Pos SW

   OK

   The Techstream 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 [10/2015 - ] 

Result: 

OK 

See step  3

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 / Smart Access / Data List.
5. Read the Data List according to the display on the Techstream.

   Body Electrical > Smart Access > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   Dr-Door Touch Sensor	Rear door LH touch sensor (unlock sensor)	ON or OFF	ON: Rear door LH touch sensor (unlock sensor) touched OFF: Rear door (for driver side) touch sensor (unlock sensor) not 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
   Dr-Door Touch Sensor

   OK

   The Techstream display changes correctly in response to the operation of the rear door outside handle assembly LH.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [10/2015 - 09/2017]  , or refer to  REMOVAL [09/2017 - ] 

Result: 

NG 

See step  4

1. Disconnect the T1 certification ECU (smart key ECU assembly) connector.
2. Disconnect the Q3 rear door outside handle assembly LH connector.
3. Measure the resistance according to the value (s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   T1-25 (SEN3) - Q3-4 (SENS)	Always	Below 1 Ω
   A21-11 (E) - Body ground	Always	Below 1 Ω
   T1-25 (SEN3) or Q3-4 (SENS) - Body ground	Always	10 kΩ or higher

4. Reconnect the Q3 rear door outside handle assembly LH connector.
5. Reconnect the T1 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
   T1-25 (SEN3) - A21-11 (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 Rear door LH unlock sensor not touched → touched	2 V/DIV., 500 ms./DIV.	Pulse generation (See waveform)

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [10/2015 - 09/2017]  , or refer to  REMOVAL [09/2017 - ] 

Result: 

NG 

REPLACE REAR DOOR OUTSIDE HANDLE ASSEMBLY LH. Refer to  DISASSEMBLY [10/2015 - 09/2017]  , or refer to  DISASSEMBLY [09/2017 - ]