Toyota Corolla Cross: New Key cannot be Registered

1.

CHECK FOR DTC

GO TO DIAGNOSTIC TROUBLE CODE CHART

2.

READ VALUE USING GTS (NUMBER OF REGISTERED KEY CODES)

Number of Registered Key Codes

Number of registered electrical key transmitter sub-assemblies

0 to 4

Number of registered electrical key transmitter sub-assemblies

Up to 4 electrical key transmitter sub-assemblies can be registered.

Number of Registered Key Codes

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

3.

READ VALUE USING GTS (VEHICLE CONTROL HISTORY (ROB))

Vehicle Control History (RoB)

Cannot Enter Registration Mode

• A registration request was sent while in another mode.
• During registration a different registration request was sent.

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.

• Certification ECU (smart key ECU assembly)
• ID code box (immobiliser code ECU)

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.

• Certification ECU (smart key ECU assembly)
• ID code box (immobiliser code ECU)

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 ID code box (immobiliser code ECU) was not connected.

• Certification ECU (smart key ECU assembly)
• ID code box (immobiliser code ECU)

F

ECU Code Confirmation Failed (L Code Certification Failed)

The L code registered in the ID code box (immobiliser code ECU) is abnormal.

• Certification ECU (smart key ECU assembly)
• ID code box (immobiliser code ECU)

C

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.

• Certification ECU (smart key ECU assembly)
• ID code box (immobiliser code ECU)

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)

G

Confirmation Failed for All Registered Keys (Immobilizer Certification Failed)

All of the registered electrical key transmitter sub-assemblies were incorrectly held near the power switch and the certification ECU (smart key ECU assembly) could not complete verification.

• Certification ECU (smart key ECU assembly)
• Power switch

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 power switch, electrical key transmitter sub-assembly registration was not possible due to immobiliser function certification not being successful.

• Certification ECU (smart key ECU assembly)
• Electrical key transmitter sub-assembly

J

Confirmation Failed for All Registered Keys (Key Information Malfunction)

All of the registered electrical key transmitter sub-assemblies were held near the power switch, but key ID information was not stored by the certification ECU (smart key ECU assembly).

Key registration failure

H

New Key ID Registration Failed (Immobilizer Certification Failed)

Although an unregistered electrical key transmitter sub-assembly was held near the power switch, electrical key transmitter sub-assembly registration is not possible due to immobiliser function certification not being successful.

• Certification ECU (smart key ECU assembly)
• Electrical key transmitter sub-assembly

H

New Key ID Registration Failed (Vehicle ID did not Match)

Although an unregistered electrical key transmitter sub-assembly was held near the power switch, electrical key transmitter sub-assembly registration is not possible due to the vehicle ID not being stored successfully.

• Certification ECU (smart key ECU assembly)
• Electrical key transmitter sub-assembly

K

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.

• Certification ECU (smart key ECU assembly)
• Electrical key transmitter sub-assembly

K

New Key ID Registration Failed (Key Already Registered)

Although a registered electrical key transmitter sub-assembly was held near the power switch, time expired or a registration cancellation request was sent.

Certification ECU (smart key ECU assembly)

L

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 power 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/F Codes

The certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU) was not connected.

• Certification ECU (smart key ECU assembly)
• ID code box (immobiliser code ECU)

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).

• Certification ECU (smart key ECU assembly)
• 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 ID code box (immobiliser code ECU).

• Certification ECU (smart key ECU assembly)
• ID code box (immobiliser code ECU)

C

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).

• Certification ECU (smart key ECU assembly)
• ID code box (immobiliser code ECU)

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).

• Main body ECU (multiplex network body ECU)
• Certification ECU (smart key ECU assembly)

M

New Key ID Registration Stopped (Security Access Malfunction)

Communication error

Communication error between the GTS and key registration server

N

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.
• The electrical key transmitter sub-assembly is not compatible with the certification ECU (smart key ECU assembly).

Electrical key transmitter sub-assembly

O

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

GO TO STEP 5

CHECK FOR DTC B278987

GO TO STEP 6

CHECK FOR DTC B278588

REPLACE ID CODE BOX (IMMOBILISER CODE ECU)

CHECK FOR DTC B27841C, B278E87

GO TO STEP 7

GO TO STEP 11

GO TO STEP 13

NEW KEY REGISTRATION FAILED, CHECK THE KEY

(a) Check if a registered electrical key transmitter sub-assembly was held near the power 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).

GO TO STEP 14

PERFORM REREGISTRATION

(a) Replace the electrical key transmitter sub-assembly, register the ID.

Click here REPLACE ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY

4.

CHECK REGISTRATION MODE

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

PERFORM REREGISTRATION

5.

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

END (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) WAS DEFECTIVE)

REPLACE ID CODE BOX (IMMOBILISER CODE ECU)

6.

READ VALUE USING GTS (VEHICLE SPEED METER)

Vehicle Speed Meter

Vehicle speed

Min.: 0, Max.: 255

Almost same as actual vehicle speed (Speedometer tester)

-

Vehicle Speed Meter

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

GO TO METER / GAUGE SYSTEM

for 12.3 Inch Display: Click here

except 12.3 Inch Display: Click here

7.

CHECK ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY

USE A REGISTERED ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY AND PERFORM REREGISTRATION

8.

CHECK NUMBER OF REGISTERED ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLIES

Only one electrical key transmitter sub-assembly is registered

A

2 or more electrical key transmitter sub-assemblies are registered

B

GO TO STEP 10

9.

REREGISTRATION

1

A → B → C

2

B → C→ A

3

C → A → B

REPLACE ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY (ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY HELD WHEN "Key Verification: Read Error" WAS DETECTED WAS DEFECTIVE)

10.

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

END (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) WAS DEFECTIVE)

REPLACE ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY

11.

CHECK FOR REGISTERD ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY

ERASE ALL REGISTERED ELECTRICAL KEY TRANSMITTERS EXCEPT ONE, THEN REGISTER THE REMAINING ELECTRICAL KEY TRANSMITTERS

12.

REREGISTRATION

1

A → B → C

2

B → C→ A

3

C → A → B

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

REPLACE ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY (ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY HELD WHEN "Key Verification: Read Error" WAS DETECTED WAS DEFECTIVE)

13.

REREGISTRATION

END (ELECTRICAL KEY TRANSMITTER WAS DEFECTIVE)

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

14.

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

END (MAIN BODY ECU (MULTIPLEX NETWROK BODY ECU) WAS DEFECTIVE)

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)