Last Modified: 07-31-2024 6.11:8.1.0 Doc ID: RM100000001AUMN
Model Year Start: 2019 Model: GR Corolla Prod Date Range: [06/2018 - 09/2022]
Title: LIGHTING (EXT): LIGHTING SYSTEM (for Gasoline Model with AFS): B2450; Height Sensor Initialization Incomplete; 2019 - 2022 MY Corolla Corolla Hatchback GR Corolla [06/2018 - 09/2022]

DTC

B2450

Height Sensor Initialization Incomplete

DESCRIPTION

The headlight ECU sub-assembly LH stores this DTC if initialization has not been performed after it was replaced.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

DTC Output from

B2450

Height Sensor Initialization Incomplete

Detection condition:

  • The engine switch is on (IG).

Malfunction status:

  • Headlight ECU sub-assembly LH initialization not completed

Malfunction duration:

  • -

Headlight ECU sub-assembly LH

AFS

CAUTION / NOTICE / HINT

NOTICE:

  • If the headlight ECU sub-assembly LH has been replaced, it is necessary to synchronize the vehicle information and initialize the headlight ECU sub-assembly LH.

    Click here 2019 - 2021 MY Corolla Corolla Hatchback GR Corolla [06/2018 - 06/2021]; LIGHTING (EXT): LIGHTING SYSTEM (for Gasoline Model with AFS): INITIALIZATION 2022 MY Corolla Corolla Hatchback GR Corolla [06/2021 - 09/2022]; LIGHTING (EXT): LIGHTING SYSTEM (for Gasoline Model with AFS): INITIALIZATION

  • When replacing the headlight ECU sub-assembly LH, always replace it with a new one. If a headlight ECU sub-assembly LH which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.

PROCEDURE

1.

INITIALIZATION HEADLIGHT ECU SUB-ASSEMBLY LH

(a) Perform initialization of the headlight ECU sub-assembly LH.

Click here 2019 - 2021 MY Corolla Corolla Hatchback GR Corolla [06/2018 - 06/2021]; LIGHTING (EXT): LIGHTING SYSTEM (for Gasoline Model with AFS): INITIALIZATION 2022 MY Corolla Corolla Hatchback GR Corolla [06/2021 - 09/2022]; LIGHTING (EXT): LIGHTING SYSTEM (for Gasoline Model with AFS): INITIALIZATION

NEXT

2.

CLEAR DTC

(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 / AFS / Trouble Codes.

(e) Clear the DTCs.

Body Electrical > AFS > Clear DTCs

NEXT

3.

CHECK FOR DTC

(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 / AFS / Trouble Codes.

(e) Check for DTCs.

Body Electrical > AFS > Trouble Codes

OK:

DTC B2450 is not output.

HINT:

If the headlight ECU sub-assembly LH stores DTC B2450 even though the ECU has been initialized, there may be a malfunction in the headlight ECU sub-assembly LH.

OK

END (INITIALIZATION WAS NOT COMPLETED)
NG

REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH