DTC B2790: ID BOX EEPROM Malfunction [11/2018 - ]: Procedure

WARNING: This page is about a different variant/trim than selected.

REPLACE ID CODE BOX (IMMOBILISER CODE ECU)

Replace the ID code box (immobiliser code ECU) with a new one.

Refer to REMOVAL [11/2018 - 02/2019] , or refer to REMOVAL [02/2019 - 10/2019] , or refer to REMOVAL [10/2019 - 08/2020] , or refer to REMOVAL [08/2020 - 12/2021] , or refer to REMOVAL [12/2021 - 10/2022] , or refer to REMOVAL [10/2022 - 10/2023] , or refer to REMOVAL [10/2023 - ]

HINT:

Refer to Registration.

Refer to REGISTRATION [11/2018 - 10/2019] , or refer to REGISTRATION [10/2019 - 12/2021] , or refer to REGISTRATION [12/2021 - ]

Result

Proceed to
NEXT

Result:

NEXT

See step 2

CLEAR DTC

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Turn the Techstream on.
Enter the following menus: Body Electrical / Smart Key / Clear DTCs.

Clear the DTCs.

Body Electrical > Smart Key > Clear DTCs

Result

Proceed to
NEXT

Result:

NEXT

See step 3

REGISTER RECOGNITION CODES

Register the recognition codes to the ECUs.

HINT:

Refer to Registration.

Refer to REGISTRATION [11/2018 - 10/2019] , or refer to REGISTRATION [10/2019 - 12/2021] , or refer to REGISTRATION [12/2021 - ]

Result

Proceed to
NEXT

Result:

NEXT

See step 4

REGISTER ECU COMMUNICATION ID (ID CODE BOX (IMMOBILISER CODE ECU) - HYBRID VEHICLE CONTROL ECU ASSEMBLY)

Register the ECU communication ID codes.

HINT:

Refer to Registration.

Refer to REGISTRATION [11/2018 - 10/2019] , or refer to REGISTRATION [10/2019 - 12/2021] , or refer to REGISTRATION [12/2021 - ]

Result

Proceed to
NEXT

Result:

NEXT

See step 5

CHECK FOR DTC

Enter the following menus: Body Electrical / Smart Key / Trouble Codes.

Check for DTCs.

Body Electrical > Smart Key > Trouble Codes

HINT:

Before checking for DTCs, perform the "DTC Output Confirmation Operation" procedure.

Result

Result	Proceed to
DTC B2790 is not output.	A
DTC B2790 is output.	B

Result:

A

END (ID CODE BOX (IMMOBILISER CODE ECU) WAS DEFECTIVE)

Result:

B

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to REMOVAL [11/2018 - 02/2019] , or refer to REMOVAL [02/2019 - 10/2019] , or refer to REMOVAL [10/2019 - 08/2020] , or refer to REMOVAL [08/2020 - 12/2021] , or refer to REMOVAL [12/2021 - 10/2022] , or refer to REMOVAL [10/2022 - 10/2023] , or refer to REMOVAL [10/2023 - ]