Digital Key cannot be Cleared [11/2021 - ]: Procedure

1. Clear all registered digital keys using the GTS.

   Refer to REGISTRATION [11/2021 - ]

   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 DIGITAL KEY (OWNER KEY) REGISTRATION) 

Result: 

B 

GO TO NAVIGATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) 

Refer to REMOVAL [11/2021 - ]

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
   G30-23 (UART) - Body ground	All of the following conditions are met: Ignition 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 [11/2021 - ]

Result: 

C 

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 

Refer to REMOVAL [11/2021 - ]

Result: 

D 

See step  8

Result: 

A 

See step  4

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

   Refer to REMOVAL [11/2021 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  5

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

   for HEV Model: Refer to REGISTRATION [11/2021 - 03/2023] , or refer to REGISTRATION [03/2023 - ]

   for Gasoline Model: Refer to REGISTRATION [11/2021 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  6

1. Register the digital key (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 [11/2021 - ]

1. Disconnect the G30 digital key ECU assembly connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Digital Key ECU Assembly)

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

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   G30-23 (UART) - Body ground	Ignition switch off*1 Always*2	11 to 14 V

   1. *1: for HEV Model
   2. *2: for Gasoline Model

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE DIGITAL KEY ECU ASSEMBLY 

Refer to REMOVAL [11/2021 - ]

Result: 

NG 

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 

Refer to REMOVAL [11/2021 - ]