Front Passenger Side Door Entry Unlock Function does not Operate [10/2015 - ]: 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 [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
   FR Door Lock Pos	Front RH door unlock detection switch signal	UNLOCK or LOCK	UNLOCK: Front RH door unlocked LOCK: Front RH door locked	-

   Body Electrical > Main Body > Data List 

   Tester Display
   FR Door Lock Pos

   OK

   On the Techstream screen, the display changes between LOCK and UNLOCK as shown in the chart above.

   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
   P-Door Touch Sensor	Front passenger door touch sensor (unlock sensor)	ON or OFF	ON: Front passenger door touch sensor (unlock sensor) touched OFF: Front passenger door 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
   P-Door Touch Sensor

   OK

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

   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 N28 front door outside handle assembly RH connector.
2. Disconnect the A21 and K74 certification ECU (smart key ECU assembly) connectors.
3. Measure the resistance according to the value (s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   N28-4 (SENS) - K74-23 (SEN2)	Always	Below 1 Ω
   A21-11 (E) - Body ground	Always	Below 1 Ω
   N28-4 (SENS) or K74-23 (SEN2) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  5

1. Connect the N28 front door outside handle assembly RH connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Component with harness connected (Certification ECU [Smart Key ECU Assembly])	*b	Waveform
   *c	In actuality, sampling is being performed	-	-

2. Connect the A21 and K74 certification ECU (smart key ECU assembly) connectors.
3. Using an oscilloscope, check the waveform.

   OK

   Tester Connection	Switch Condition	Tool Setting	Specified Condition
   K74-23 (SEN2) - A21-11 (E)	Procedure  Engine switch off Electrical key transmitter sub-assembly brought outside vehicle All doors locked Electrical key transmitter sub-assembly not sufficiently close to vehicle Front passenger door 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 FRONT DOOR OUTSIDE HANDLE ASSEMBLY RH. Refer to  DISASSEMBLY [10/2015 - 09/2017]  , or refer to  DISASSEMBLY [09/2017 - ]