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:

     Generator Position Sensor Circuit Voltage Below Threshold (P0A4B16,P0A4B1F)

    DTC SUMMARY MALFUNCTION DESCRIPTION These DTCs indicate that the resolver output signal is abnormal. The cause of this malfunction may be one of the following: Area Main Malfunction Description Inverter low-voltage circuit The connectors are not connected properly H

     Installation

    INSTALLATION CAUTION / NOTICE / HINT COMPONENTS (INSTALLATION) Procedure Part Name Code 1 LICENSE PLATE LIGHT ASSEMBLY 81270 - - - 2 BACK DOOR TRIM PANEL ASSEMBLY 64780A - - - 3 BACK DOOR SIDE GARNISH LH 67938A -

    © 2020-2025 Copyright www.tcorollacross.com PT NL