- A registration request was sent while in another mode.
- During registration a different registration request was sent.
| Last Modified: 05-13-2024 | 6.11:8.1.0 | Doc ID: RM100000001CY6L |
| Model Year Start: 2019 | Model: GR Corolla | Prod Date Range: [06/2018 - 09/2022] |
| Title: THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): New Key cannot be Registered; 2019 - 2022 MY Corolla Corolla Hatchback GR Corolla [06/2018 - 09/2022] | ||
|
New Key cannot be Registered |
DESCRIPTION
If a new electrical key transmitter sub-assembly could not be registered, wave interference or a malfunction of the certification ECU (smart key ECU assembly), electrical key transmitter sub-assembly, steering lock ECU (steering lock actuator or upper bracket assembly), ID code box (immobiliser code ECU) or door control receiver assembly is suspected.
The registration procedure to add another electrical key transmitter sub-assembly (without replacing any parts) is called "additional key ID registration".
If additional registration is not possible, refer to Additional Key cannot be Registered.
Click here
![2019 - 2022 MY Corolla Corolla Hatchback GR Corolla [06/2018 - 09/2022]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): Additional Key cannot be Registered](/t3Portal/stylegraphics/info.gif)
HINT:
If any of the following have been performed, registration of all electrical key transmitter sub-assemblies is necessary:
- The certification ECU (smart key ECU assembly) has been replaced.
- The certification ECU (smart key ECU assembly) and ID code box (immobiliser code ECU) have been replaced.
- The certification ECU (smart key ECU assembly), ID code box (immobiliser code ECU) and steering lock ECU (steering lock actuator or upper bracket assembly) have been replaced.
CAUTION / NOTICE / HINT
NOTICE:
- New registration mode can be entered only when no electrical key transmitter sub-assemblies are stored in the certification ECU (smart key ECU assembly).
- When using the Techstream with the engine switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus Body Electrical Smart Key. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.
-
The smart key system (for Start Function) uses the LIN communication system and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart key system (for Start Function) after confirming that the communication systems are functioning properly.
Click here
-
Before replacing the electrical key transmitter sub-assembly, certification ECU (smart key ECU assembly), ID code box (immobiliser code ECU) or steering lock ECU (steering lock actuator or upper bracket assembly), refer to Registration.
Click here
- Inspect the fuses for circuits related to this system before performing the following procedure.
- After repair, confirm that no DTCs are output.
PROCEDURE
|
1. |
CHECK FOR DTC |
(a) Check for DTCs.
Body Electrical > Smart Key > Trouble Codes
NOTICE:
If a malfunction occurs, do not remove/install the vehicle battery before checking for DTCs.
OK:
DTCs are not output.
| NG |
|
GO TO DIAGNOSTIC TROUBLE CODE CHART
|
|
|
2. |
READ VALUE USING TECHSTREAM (NUMBER OF REGISTERED KEY CODES) |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Smart Key / Data List.
(e) Read the Data List according to the display on the Techstream.
Body Electrical > Smart Key > Data List
|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Number of Registered Key Codes |
Number of registered electrical key transmitter sub-assemblies |
0 to 8 |
Number of registered electrical key transmitter sub-assemblies |
Up to 4 electrical key transmitter sub-assemblies can be registered. |
Body Electrical > Smart Key > Data List
|
Tester Display |
|---|
|
Number of Registered Key Codes |
HINT:
A new certification ECU (smart key ECU assembly) will be have no electrical key transmitter sub-assemblies registered.
OK:
"0" is displayed on the Techstream display.
| NG |
|
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
|
|
|
3. |
READ VALUE USING TECHSTREAM (OPERATION HISTORY) |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Smart Key / Utility / Operation History / Certification ECU operation log of ID code registration.
Body Electrical > Smart Key > Utility
|
Tester Display |
|---|
|
Operation History |
(e) Check the freeze frame data.
Registration Function (Reason for Non-operation):
|
Parameter Name |
Detection Condition |
Trouble Area |
Proceed to |
|---|---|---|---|
|
Cannot Enter Registration Mode |
|
Certification ECU (smart key ECU assembly) |
A |
|
Cannot Enter Registration Mode (Vehicle ID Not Set) |
A vehicle ID has not been registered in the certification ECU (smart key ECU assembly). |
Certification ECU (smart key ECU assembly) |
B |
|
Registration Limit |
A registration request is sent when the maximum number of electrical key transmitter sub-assemblies has already been registered. |
|
C |
|
Cannot Enter Registration Mode (ID Code Box Availability Not Confirmed) |
A registration request was sent even though the existence of an ID code box is unknown. |
|
D |
|
Cannot Enter Registration Mode (Vehicle Speed > 5 km/h) (This applies only when registration fails even though the vehicle is stationary. Make sure that the vehicle is stationary first.) |
A registration request is sent with a vehicle speed of 5 km/h (3 mph) or more. |
Certification ECU (smart key ECU assembly) |
E |
|
ECU Code Confirmation Failed (No Response from Connected ECUs) |
The steering lock ECU (steering lock actuator or upper bracket assembly) was not connected. |
|
F |
|
ECU Code Confirmation Failed (L Code Certification Failed) |
The L codes registered in the ID code box (immobiliser code ECU) and steering lock ECU (steering lock actuator or upper bracket assembly) did not match. |
|
G |
|
ECU Code Confirmation Failed (L Code Succeeded, S Code Failed) |
L code verification was successful but the S code stored in the ID code box (immobiliser code ECU) and certification ECU (smart key ECU assembly) did not match. |
|
C |
|
ECU Code Confirmation Failed (Too Many Keys Registered in ID Code Box) |
The number of electrical key transmitter sub-assemblies registered in the ID code box (immobiliser code ECU) was more than 7. |
ID code box (immobiliser code ECU) |
H |
|
Confirmation Failed for All Registered Keys (Immobilizer Certification Failed) |
All of the registered electrical key transmitter sub-assemblies were incorrectly held near the engine switch and the certification ECU (smart key ECU assembly) could not complete verification. |
|
I |
|
Confirmation Failed for All Registered Keys (Some Keys Unconfirmed) |
Although all of the registered electrical key transmitter sub-assemblies had been held near the engine switch, electrical key transmitter sub-assembly registration was not possible due to immobiliser function certification not being successful. |
|
J |
|
Confirmation Failed for All Registered Keys (Key Information Malfunction) |
All of the registered electrical key transmitter sub-assemblies were held near the engine switch, but key ID information was not stored by the certification ECU (smart key ECU assembly). |
Key registration failure |
K |
|
New Key ID Registration Failed (Immobilizer Certification Failed) |
Although an unregistered electrical key transmitter sub-assembly was held near the engine switch, electrical key transmitter sub-assembly registration is not possible due to immobiliser function certification not being successful. |
|
L |
|
New Key ID Registration Failed (Vehicle ID did not Match) |
Although an unregistered electrical key transmitter sub-assembly was held near the engine switch, electrical key transmitter sub-assembly registration is not possible due to the vehicle ID not being stored successfully. |
|
M |
|
New Key ID Registration Failed (Conditions Other than Vehicle ID not Met) |
After successful immobiliser function certification, time expired before smart recognition completion confirmation or a registration cancellation request was sent. |
|
M |
|
New Key ID Registration Failed (Key Already Registered) |
Although a registered electrical key transmitter sub-assembly was held near the engine switch, time expired or a registration cancellation request was sent. |
Certification ECU (smart key ECU assembly) |
N |
|
New Key ID Registration Failed (ID Code Writing Failed) |
Electrical key transmitter sub-assembly registration was not possible due to the certification ECU (smart key ECU assembly) not being able to store the information of the electrical key transmitter sub-assembly to EEPROM correctly. |
Certification ECU (smart key ECU assembly) |
B |
|
New Key ID Registration Failed (Key Information Malfunction) |
An unregistered electrical key transmitter sub-assembly was held near the engine switch, but key ID information was not stored by the certification ECU (smart key ECU assembly). |
Key registration failure |
K |
|
No Response from Connected ECUs when Registering L/S Codes |
The certification ECU (smart key ECU assembly), ID code box (immobiliser code ECU) or steering lock ECU (steering lock actuator or upper bracket assembly) was not connected. |
|
F |
|
S Code Registration Failed (Certification ECU, ID Code Box) |
The S code could not be stored by the certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU). |
|
C |
|
L Code Registration Failed (ID Code Box, Steering Lock ECU) |
The L code could not be stored by the steering lock ECU (steering lock actuator or upper bracket assembly) or ID code box (immobiliser code ECU). |
|
G |
|
ECU ID Verification Error |
The code received from the ID code box (immobiliser code ECU) when the S code is registered does not match the code of the certification ECU (smart key ECU assembly). |
|
C |
|
Key Number Write Error |
The certification ECU (smart key ECU assembly) could not store the number of electrical key transmitter sub-assemblies to EEPROM. |
Certification ECU (smart key ECU assembly) |
B |
|
ID Code BOX Write Error |
The certification ECU (smart key ECU assembly) could not store the information of whether the ID code box was provided in the vehicle to EEPROM. |
Certification ECU (smart key ECU assembly) |
B |
|
B Code Registration Failed (Certification ECU, Main Body ECU) |
B code was not stored by the certification ECU (smart key ECU assembly). |
|
O |
|
New Key ID Registration Stopped (Security Access Malfunction) |
Communication error |
Communication error between the Techstream and key registration server |
P |
|
New Key ID Registration Stopped (Certification ECU Type Malfunction) |
The electrical key transmitter sub-assembly is not compatible with the certification ECU (smart key ECU assembly). |
Certification ECU (smart key ECU assembly) |
B |
|
New Key ID Registration Stopped (Key Type Malfunction) |
The electrical key transmitter sub-assembly is not compatible with the registration mode. |
Electrical key transmitter sub-assembly |
Q |
| B |
|
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
|
| C |
|
| D |
|
| E |
|
| F |
|
| G |
|
| H |
|
REPLACE ID CODE BOX (IMMOBILISER CODE ECU)
|
| I |
|
| J |
|
| K |
|
PERFORM REREGISTRATION |
| L |
|
| M |
|
| N |
|
NEW KEY REGISTRATION FAILED, CHECK THE KEY (a) Check if a registered electrical key transmitter sub-assembly was held near the engine switch instead of an unregistered electrical key transmitter sub-assembly by mistake. (b) Perform registration again using an unregistered electrical key transmitter sub-assembly. If the same problem occurs again, replace the certification ECU (smart key ECU assembly). |
| O |
|
| P |
|
CHECK TECHSTREAM (a) Check communication between the GTS and the key registration server. |
| Q |
|
REREGISTRATION (a) Replace the electrical key transmitter sub-assembly, register the ID. Click here
|
|
|
4. |
CHECK REGISTRATION MODE |
(a) Make sure that another mode or different registration mode is not selected.
OK:
Another mode or a different registration mode is not selected.
HINT:
If any mode has been selected, it is necessary to cancel the mode.
| OK |
|
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
|
| NG |
|
PERFORM REREGISTRATION |
|
5. |
CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
(a) Temporarily replace the certification ECU (smart key ECU assembly) with a new one and register the electrical key transmitter sub-assemblies.
HINT:
-
For replacement.
Click here
-
For registration.
Click here
OK:
All of the electrical key transmitter sub-assemblies could be registered to the new certification ECU (smart key ECU assembly) successfully.
| OK |
|
END (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) WAS DEFECTIVE) |
| NG |
|
REPLACE ID CODE BOX (IMMOBILISER CODE ECU)
|
|
6. |
READ VALUE USING TECHSTREAM (VEHICLE SPEED METER) |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Combination Meter / Data List.
(e) Read the Data List according to the display on the Techstream.
Body Electrical > Combination Meter > Data List
|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Vehicle Speed Meter |
Vehicle speed |
Min.: 0, Max.: 255 |
Almost same as actual vehicle speed (Speedometer tester) |
- |
Body Electrical > Combination Meter > Data List
|
Tester Display |
|---|
|
Vehicle Speed Meter |
OK:
"0 km/h (0 mph)" is displayed when the vehicle is stationary.
| OK |
|
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
|
| NG |
|
|
7. |
CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
(a) Temporarily replace the certification ECU (smart key ECU assembly) with a new one and register the electrical key transmitter sub-assemblies.
HINT:
-
For replacement.
Click here
-
For registration
Click here
OK:
All of the electrical key transmitter sub-assemblies could be registered to the new certification ECU (smart key ECU assembly) successfully.
| OK |
|
END (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) WAS DEFECTIVE) |
|
|
8. |
CHECK STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY) |
(a) Replace the steering lock ECU (steering lock actuator or upper bracket assembly) with a new one and register the electrical key transmitter sub-assemblies.
Click here
OK:
All of the electrical key transmitter sub-assemblies could be registered to the new steering lock ECU (steering lock actuator or upper bracket assembly) successfully.
| OK |
|
END (STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY) WAS DEFECTIVE) |
| NG |
|
REPLACE ID CODE BOX (IMMOBILISER CODE ECU)
|
|
9. |
CHECK FOR DTC |
(a) Check for DTCs.
Body Electrical > Smart Key > Trouble Codes
NOTICE:
If a malfunction occurs, do not remove/install the vehicle battery before checking for DTCs.
OK:
DTC B278A or B2874 is not output.
| NG |
|
GO TO DTC B278A OR B2784
|
|
|
10. |
CHECK ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY |
(a) Make sure that a registered electrical key transmitter sub-assembly is being used.
OK:
A registered electrical key transmitter sub-assembly is being used.
| NG |
|
USE A REGISTERED ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY AND PERFORM REREGISTRATION |
|
|
11. |
CHECK NUMBER OF REGISTERED ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLIES |
(a) Check the number of registered electrical key transmitter sub-assemblies.
|
Result |
Proceed to |
|---|---|
|
Only one electrical key transmitter sub-assembly is registered |
A |
|
2 or more electrical key transmitter sub-assemblies are registered |
B |
| A |
|
|
|
12. |
REREGISTRATION |
(a) Reregister the electrical key transmitter sub-assemblies using different order combinations.
Click here
HINT:
If there are 2 or more electrical key transmitter sub-assemblies, make sure that the number of order combinations is the same as the number of electrical key transmitter sub-assemblies so that each transmitter can be checked first.
Example: When there are 3 registered electrical key transmitter sub-assemblies (A, B and C).
|
Combination |
Order* |
|---|---|
|
1 |
A → B → C |
|
2 |
B → C→ A |
|
3 |
C → A → B |
- *: Except for the first electrical key transmitter sub-assembly, the remaining electrical key transmitter sub-assemblies can be checked in any order.
OK:
"Key Verification: Read Error" is not displayed.
| OK |
|
REPLACE ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY (ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY HELD WHEN "Key Verification: Read Error" WAS DETECTED WAS DEFECTIVE) |
|
|
13. |
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
(a) Temporarily replace the certification ECU (smart key ECU assembly) with a new one and register the electrical key transmitter sub-assemblies.
HINT:
-
For replacement.
Click here
-
For registration.
Click here
OK:
All of the electrical key transmitter sub-assemblies could be registered to the new certification ECU (smart key ECU assembly) successfully.
| OK |
|
END (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) WAS DEFECTIVE) |
| NG |
|
REPLACE ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY |
|
14. |
CHECK FOR ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY |
(a) Check that all registered electrical key transmitter sub-assemblies are available.
OK:
No registered electrical key transmitter sub-assemblies are missing.
| NG |
|
ERASE ALL REGISTERED ELECTRICAL KEY TRANSMITTERS EXCEPT ONE, THEN REGISTER THE REMAINING ELECTRICAL KEY TRANSMITTERS |
|
|
15. |
REREGISTRATION |
(a) Register the electrical key transmitter sub-assemblies using different order combinations.
Click here
HINT:
If there are 2 or more electrical key transmitter sub-assemblies, make sure that the number of order combinations is the same as the number of electrical key transmitter sub-assemblies so that each transmitter can be checked first.
Example: When there are 3 registered electrical key transmitter sub-assemblies (A, B and C).
|
Combination |
Order* |
|---|---|
|
1 |
A → B → C |
|
2 |
B → C→ A |
|
3 |
C → A → B |
- *: Except for the first electrical key transmitter sub-assembly, the remaining electrical key transmitter sub-assemblies can be checked in any order.
OK:
"Key Verification: Read Error" is not displayed.
| OK |
|
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
|
| NG |
|
REPLACE ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY (ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY HELD WHEN "Key Verification: Read Error" WAS DETECTED WAS DEFECTIVE) |
|
16. |
CHECK FOR DTC |
(a) Check for DTCs.
Body Electrical > Smart Key > Trouble Codes
NOTICE:
If a malfunction occurs, do not remove/install the vehicle battery before checking for DTCs.
OK:
DTC B278A or B2874 is not output.
| NG |
|
GO TO DTC B278A OR B2784
|
|
|
17. |
REREGISTRATION |
(a) Using an unregistered electrical key transmitter sub-assembly, register the ID.
Click here
OK:
The key ID can be registered.
| OK |
|
END (ELECTRICAL KEY TRANSMITTER WAS DEFECTIVE) |
| NG |
|
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
|
|
18. |
REREGISTRATION |
(a) Using an unregistered electrical key transmitter sub-assembly, register the ID.
Click here
OK:
The key ID can be registered.
| OK |
|
END (ELECTRICAL KEY TRANSMITTER WAS DEFECTIVE) |
| NG |
|
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
|
|
19. |
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
(a) Temporarily replace the main body ECU (multiplex network body ECU) with a new one and register the electrical key transmitter sub-assemblies.
HINT:
-
For replacement.
Click here
-
For registration.
Click here
OK:
All of the electrical key transmitter sub-assemblies could be registered to the new main body ECU (multiplex network body ECU) successfully.
| OK |
|
END (MAIN BODY ECU (MULTIPLEX NETWROK BODY ECU) WAS DEFECTIVE) |
| NG |
|
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
|
|
|