Last Modified: 07-31-2024 6.11:8.1.0 Doc ID: RM10000000294YY
Model Year Start: 2023 Model: GR Corolla Prod Date Range: [09/2022 -           ]
Title: THEFT DETERRENT / KEYLESS ENTRY: IMMOBILISER SYSTEM (w/o Smart Key System): B2794; Unmatched Encryption Code; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 -        ]

DTC

B2794

Unmatched Encryption Code

DESCRIPTION

This DTC is stored when a door control transmitter assembly with an incomplete key ID code is inserted into the ignition key cylinder.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Note

B2794

Unmatched Encryption Code

A door control transmitter assembly with an incomplete key ID code is inserted into the ignition key cylinder (1 trip detection logic*).

Door control transmitter assembly

DTC Output Confirmation Operation:

  • Insert the door control transmitter assembly into the ignition key cylinder.
  • *: Only output while a malfunction is present.

Vehicle Condition and Fail-safe Operation when Malfunction Detected

Vehicle Condition when Malfunction Detected

Fail-safe Operation when Malfunction Detected
  • Hybrid control system cannot be started*1
  • Engine cannot be started*2

-
  • *1: for HV Model
  • *2: for Gasoline Model

Related Data List and Active Test

DTC No.

Data List and Active Test

B2794

-

CAUTION / NOTICE / HINT

NOTICE:

  • If the door control transmitter assembly is replaced, refer to Registration.

    Click here 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - 11/2022]; THEFT DETERRENT / KEYLESS ENTRY: IMMOBILISER SYSTEM (w/o Smart Key System): REGISTRATION 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]; THEFT DETERRENT / KEYLESS ENTRY: IMMOBILISER SYSTEM (w/o Smart Key System): REGISTRATION

  • After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".

PROCEDURE

1.

REGISTRATION OF TRANSMITTER ID

(a) Register the door control transmitter assembly which caused the DTC to be stored.

NEXT

2.

CLEAR DTC

(a) Clear the DTCs.

Body Electrical > Immobiliser > Clear DTCs

NEXT

3.

CHECK FOR DTC

(a) Perform "DTC Output Confirmation Operation" procedure.

(b) Check for DTCs.

Body Electrical > Immobiliser > Trouble Codes

Result

Proceed to

B2794 is not output

A

B2794 is output

B
A

END (DOOR CONTROL TRANSMITTER ASSEMBLY WAS NOT REGISTERED)
B

REPLACE DOOR CONTROL TRANSMITTER ASSEMBLY THAT DTC IS OUTPUT