Driver Side Door Entry Unlock Function does not Operate [08/2014 - ]: 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 (See article. Refer to OPERATION CHECK [08/2014 - ] ).

   OK

   Door locks operate normally.

Result:  NG

NG 

GO TO POWER DOOR LOCK CONTROL SYSTEM 

(See article. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2014 - ] )

Result:  OK

OK 

See step  2

1. Connect the Techstream to the DLC3.
2. Turn the power 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.
   MAIN BODY
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   FL Door Lock Pos	Front LH door lock position switch signal / UNLOCK or LOCK	UNLOCK: Front LH door unlocked LOCK: Front LH door locked	-

   OK

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

Result:  NG

NG 

GO TO LIGHTING SYSTEM (Proceed to Door Unlock Detection Switch Circuit) 

(See article. Refer to Door Unlock Detection Switch Circuit [08/2014 - ] )

Result:  OK

OK 

See step  3

1. Using the Techstream, read the Data List (See article. Refer to DATA LIST / ACTIVE TEST [08/2014 - ] ).
   SMART ACCESS
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   D-Door Touch Sensor	Driver door touch sensor (unlock sensor) / ON or OFF	ON: Driver door touch sensor (unlock sensor) touched OFF: Driver 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.

   OK

   The Techstream display changes correctly in response to the operation of the front door outside handle assembly (for driver door).

Result:  OK

OK 

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 

(See article. Refer to REMOVAL [08/2014 - ] )

Result:  NG

NG 

See step  4

1. Disconnect the O1 front door outside handle assembly (for driver door) connector.
2. Disconnect the H1 certification ECU (smart key ECU assembly) connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   O1-4 (SENS) - H1-20 (SEN1)	Always	Below 1 Ω
   H1-15 (E) - Body ground	Always	Below 1 Ω
   O1-4 (SENS) or H1-20 (SEN1) - Body ground	Always	10 kΩ or higher

Result:  NG

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result:  OK

OK 

See step  5

1. Connect the O1 front door outside handle assembly (for driver door) connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   TEXT IN ILLUSTRATION
   
   

   *1	Waveform	-	-
   *a	Component with harness connected (Certification ECU (smart key ECU assembly))	*b	In actuality, sampling is being performed

2. Connect the H1 certification ECU (smart key ECU assembly) connector.
3. Using an oscilloscope, check the waveform.

   OK

   Tester Connection	Switch Condition	Tool Setting	Specified Condition
   H1-20 (SEN1) - H1-15 (E)	Procedure: Power switch off Key brought outside vehicle All doors locked Key not sufficiently close to vehicle Driver door unlock sensor not touched → touched	2 V/DIV., 500 ms/DIV.	Pulse generation (See waveform)

Result:  OK

OK 

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 

(See article. Refer to REMOVAL [08/2014 - ] )

Result:  NG

NG 

REPLACE FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FRONT DRIVER DOOR) 

(See article. Refer to DISASSEMBLY [08/2014 - ] )