Driver Side Door Entry Lock and Unlock Functions do not Operate [08/2015 - 08/2019]: 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 [08/2015 - 08/2019] ).

   OK

   Door locks operate normally.

Result: 

NG 

GO TO POWER DOOR LOCK CONTROL SYSTEM 

(Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2015 - 08/2019] )

Result: 

OK 

See step  2

1. Bring the electrical key transmitter approximately 0.3 m (0.984 ft.) from the door outside handle (for driver side) and perform a driver side door entry lock and unlock operation check (Refer to OPERATION CHECK [08/2015 - 08/2019] ).
   NOTE:

   If the key is brought within 0.2 m (0.656 ft.) of the door handle, communication is not possible.

   HINT: 

   • When the electrical key transmitter is brought near the driver side door outside handle, the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.
   • If the operation check is normal, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check.

   OK

   Entry function operates normally.

Result: 

OK 

AFFECTED BY WAVE INTERFERENCE 

Result: 

NG 

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 / 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 side door lock position switch signal / UNLOCK or LOCK	UNLOCK: Front LH side door unlocked LOCK: Front LH side door locked	-

   OK

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

Result: 

NG 

GO TO POWER DOOR LOCK CONTROL SYSTEM (Proceed to Only Driver Door Lock/Unlock Functions do not Operate) 

(Refer to PROBLEM SYMPTOMS TABLE [08/2015 - 08/2019] )

Result: 

OK 

See step  4

1. Disconnect the M1 handle connector.
2. Disconnect the F79 ECU connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   M1-3 (ANT2) - F79-4 (CG1B)	Always	Below 1 Ω
   M1-6 (ANT1) - F79-3 (CLG1)	Always	Below 1 Ω
   M1-5 (B) - F79-32 (POS1)	Always	Below 1 Ω
   M1-2 (GND) - Body ground	Always	Below 1 Ω
   F79-4 (CG1B) - Body ground	Always	10 kΩ or higher
   F79-3 (CLG1) - Body ground	Always	10 kΩ or higher
   F79-32 (POS1) - Body ground	Always	10 kΩ or higher

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  5

1. Disconnect the M1 handle connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   M1-3 (ANT2) - M1-6 (ANT1)	Engine switch off, all doors closed, key not in cabin and transmitter lock switch not pressed → pressed	No pulse generation → Pulse generation
   M1-5 (B) - Body ground	Engine switch off → on (IG)	9 to 14 V → Below 2 V

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Front Door Outside Handle Assembly [for Driver Side])

Result: 

NG 

REPLACE CERTIFICATION ECU 

(Refer to REMOVAL [08/2015 - 08/2019] )

Result: 

OK 

See step  6

1. Temporarily replace the front door outside handle assembly (for driver side) with a new or normally functioning one (Refer to DISASSEMBLY [08/2015 - ] ).

Result: 

NEXT 

See step  7

1. Check that the entry functions operate normally (Refer to OPERATION CHECK [08/2015 - 08/2019] ).

   OK

   Entry functions operate normally.

Result: 

OK 

END (FRONT DOOR OUTSIDE HANDLE ASSEMBLY IS DEFECTIVE) 

Result: 

NG 

REPLACE CERTIFICATION ECU 

(Refer to REMOVAL [08/2015 - 08/2019] )