Digital Key cannot be Cleared [10/2023 - ]: Procedure

1. Clear all registered digital keys using the GTS.

   HINT: 

   Refer to REGISTRATION [10/2023 - ]

   OK

   All digital keys can be cleared

   Result

   Proceed to
   OK
   NG

Result: 

NG 

See step  3

Result: 

OK 

See step  2

1. Check the problem symptoms.

   Result

   Result	Proceed to
   Digital key could not be cleared using the digital key	A
   Digital key could not be cleared using the multi-display	B

Result: 

A 

END (PERFORM OWNER KEY REGISTRATION) 

Result: 

B 

GO TO AUDIO AND VISUAL SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2023 - ] 

1. Using an oscilloscope, check the waveform.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Component with harness connected (Digital Key ECU Assembly)	*b	Waveform
   *c	Wakeup signal from digital key ECU assembly	*d	Approximately 15 ms.
   *e	15 to 50 ms.	*f	Before door lock/unlock operation using digital key
   *g	After door lock/unlock operation using digital key	-	-

   NOTE:

   The waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

   OK

   Tester Connection	Condition	Tool Setting	Specified Condition
   L301-23 (UART) - Body ground	All of the following conditions are met: Engine switch off Door lock/unlock operation has been not performed via digital key → performed	2 V/DIV., 20 ms./DIV.	Pulse generation (See waveform)

   Result

   Result	Proceed to
   OK (Normal Waveform)	A
   NG (No Wakeup Signal)	B
   NG (Normal Waveform Not Output)	C
   NG (Stuck Low)	D

Result: 

B 

REPLACE DIGITAL KEY ECU ASSEMBLY. Refer to  REMOVAL [10/2023 - ] 

Result: 

C 

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [10/2023 - ] 

Result: 

D 

See step  8

Result: 

A 

See step  4

1. Replace the digital key ECU assembly with a new one.

   HINT: 

   Refer to REMOVAL [10/2023 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  5

1. Register the digital key code to the digital key ECU assembly.

   HINT: 

   w/ Front LiDAR Sensor:

   Refer to REGISTRATION [10/2023 - ]

   w/o Front LiDAR Sensor:

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  6

1. Register the owner key using the original digital key.

   HINT: 

   Refer to the digital key application.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  7

1. Clear all registered digital keys using the digital key application.

   HINT: 

   Refer to the digital key application.

   OK

   All digital keys can be cleared

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END (DIGITAL KEY ECU ASSEMBLY WAS DEFECTIVE) 

Result: 

NG 

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [10/2023 - ] 

1. Disconnect the L301 digital key ECU assembly connector.
2. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   L301-23 (UART) - Body ground	Engine switch off	11 to 14 V

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE DIGITAL KEY ECU ASSEMBLY. Refer to  REMOVAL [10/2023 - ] 

Result: 

NG 

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [10/2023 - ]