Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: LIN Communication Missing Message (B228787)

Toyota Corolla Cross (2022-2024) Service Manual / Power Source & Network / Networking / Lin Communication System / LIN Communication Missing Message (B228787)

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

B228787

LIN Communication Missing Message

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

Certification ECU (smart key ECU assembly)

CAUTION / NOTICE / HINT

NOTICE:

  • When using the GTS with the ignition switch off, connect the GTS to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins. Then select Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Smart Key(CAN). While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.
  • Before replacing the certification ECU (smart key ECU assembly), refer to Registration.
    • for HEV Model: Click here
    • for Gasoline Model: Click here

PROCEDURE

1.

CHECK FOR DTC

(a) Check for DTCs.

Body Electrical > Smart Key > Trouble Codes

Result

Proceed to

B278588 is output

A

B278588 is not output

B
A

GO TO DTC CHART

B

2.

CLEAR DTC

(a) Clear the DTCs.

Body Electrical > Power Source Control > Clear DTCs
NEXT

3.

CHECK FOR DTC

(a) Check for DTCs.

Body Electrical > Power Source Control > Trouble Codes

Result

Proceed to

B228787 is output

A

B228787 is not output

B
A

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

B

USE SIMULATION METHOD TO CHECK

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    DESCRIPTION If the main body ECU (multiplex network body ECU) detects a communication error with an ECU connected to the door bus lines for 8 seconds or more, DTC B232588 will be stored.

     Communication between ECUs connected by LIN Bus off (B278588)

    DESCRIPTION If the certification ECU (smart key ECU assembly) detects a communication error with an ECU connected to the certification bus lines for 7 seconds or more, DTC B278588 will be stored.

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    DESCRIPTION This DTC is stored when LIN communication between the certification ECU (smart key ECU assembly) and ID code box (immobiliser code ECU) stops for 10 seconds or more. DTC N

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