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 Hev Model) / Central Gateway ECU System Internal Failure (B102004)

DESCRIPTION

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

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)

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

    READ NEXT:

     Lost Communication with Drive Motor Control Module "A" (U011000,U111A87,U115087,U115487,U115887,U117008,U117087)

    DESCRIPTION DTC No. Detection Item DTC Detection Condition Trouble Area Note U011000 Lost Communication with Drive M

     Lost Communication with Hybrid/EV Battery Energy Control Module "A" Missing Message (U011187,U01BD87,U115087,U117B87)

    DESCRIPTION DTC No. Detection Item DTC Detection Condition Trouble Area Note U011187 Lost Communication with Hybrid/

     Check CAN Communication Connection

    DESCRIPTION Symptom Trouble Area Check CAN Communication Connection CAN main bus line, CAN branch line or connector Power source circuit of

    SEE MORE:

     Removal

    REMOVAL CAUTION / NOTICE / HINT COMPONENTS (REMOVAL) Procedure Part Name Code 1 FAN WITH MOTOR ASSEMBLY - - - - 2 INLET HYBRID RADIATOR HOSE G922H - - - 3 NO. 1 WATER BY-PASS HOSE 16261G - - -

     Purge Valve

    RemovalREMOVAL CAUTION / NOTICE / HINT COMPONENTS (REMOVAL) Procedure Part Name Code 1 NO. 2 FUEL VAPOR FEED HOSE 23827A - - - 2 NO. 1 FUEL VAPOR FEED HOSE 23826 - - - 3 PURGE VALVE (PURGE VSV) 25860 -

    © 2020-2025 Copyright www.tcorollacross.com