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)

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

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

REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)

USE SIMULATION METHOD TO CHECK

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

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