Last Modified: 07-31-2024 6.11:8.1.0 Doc ID: RM1000000028LVM
Model Year Start: 2023 Model: GR Corolla Prod Date Range: [11/2022 -           ]
Title: NETWORKING: LIN COMMUNICATION SYSTEM: B228787; LIN Communication Missing Message; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]

DTC

B228787

LIN Communication Missing Message

DESCRIPTION

When an internal malfunction is detected in the certification ECU (smart key ECU assembly), this DTC is stored.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

DTC Output from

B228787

LIN Communication Missing Message

An internal malfunction occurs in the certification ECU (smart key ECU assembly).

Certification ECU (smart key ECU assembly)

Power Source Control

CAUTION / NOTICE / HINT

NOTICE:

Before replacing the certification ECU (smart key ECU assembly), refer to Registration.

for HV Model: Click here 2023 - 2025 MY Corolla Corolla HV [09/2022 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, HV Model): REGISTRATION

for Gasoline Model, except TMMMS Made: Click here 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [11/2022 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): REGISTRATION

PROCEDURE

1.

CHECK FOR DTC

(a) Check for DTCs.

Body Electrical > Power Source Control > Trouble Codes

Result

Proceed to

DTC 278588 is not output

A

DTC 278588 is output

B
B

GO TO DTC CHART

A

2.

CLEAR DTC

(a) Clear the DTCs.

Body Electrical > Power Source Control > Trouble Codes

NEXT

3.

CHECK FOR DTC

(a) Check for DTCs.

Body Electrical > Power Source Control > Trouble Codes

Result

Proceed to

DTC 228787 is not output

A

DTC 228787 is output

B
A

USE SIMULATION METHOD TO CHECK

B

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)