Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Central Gateway ECU System Internal Failure (B102004)

Toyota Corolla Cross (2022-2025) Service Manual / Power Source & Network / Networking / Can Communication System (for Gasoline Model) / Central Gateway ECU System Internal Failure (B102004)

DESCRIPTION

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

DTC Output from

Priority

Note

B102004

Central Gateway ECU System Internal Failure

A malfunction in the non-volatile storage of the central gateway ECU (network gateway ECU) is detected.

Central gateway ECU (network gateway ECU)

Central Gateway

A

DTC Output from

  • Central gateway ECU (network gateway ECU)

PROCEDURE

1.

RECONFIRM DTC OUTPUT
Body Electrical > Central Gateway > Trouble Codes

Result

Proceed to

B102004 is output

A

B102004 is not output

B
A

REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)

B

USE SIMULATION METHOD TO CHECK

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