Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM100000001FYQJ
Model Year Start: 2019 Model: RAV4 Prod Date Range: [11/2018 -           ]
Title: NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model): B1003; ECU Malfunction; 2019 - 2024 MY RAV4 [11/2018 -        ]

DTC

B1003

ECU Malfunction

DESCRIPTION

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

DTC Output from

B1003

ECU Malfunction

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

PROCEDURE

1.

RECONFIRM DTC OUTPUT

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Central Gateway / Trouble Codes.

Body Electrical > Central Gateway > Trouble Codes

Result

Proceed to

DTC B1003 is not output from the central gateway ECU (network gateway ECU)

A

DTC B1003 is output from the central gateway ECU (network gateway ECU)

B
A

USE SIMULATION METHOD TO CHECK

B

REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) 2019 MY RAV4 RAV4 HV [11/2018 - 02/2019]; NETWORKING: NETWORK GATEWAY ECU: REMOVAL 2019 MY RAV4 RAV4 HV [02/2019 - 10/2019]; NETWORKING: NETWORK GATEWAY ECU: REMOVAL 2020 MY RAV4 RAV4 HV [10/2019 - 08/2020]; NETWORKING: NETWORK GATEWAY ECU: REMOVAL 2021 MY RAV4 RAV4 HV [08/2020 - 12/2021]; NETWORKING: NETWORK GATEWAY ECU: REMOVAL 2022 MY RAV4 RAV4 HV [12/2021 - 10/2022]; NETWORKING: NETWORK GATEWAY ECU: REMOVAL 2023 MY RAV4 RAV4 HV [10/2022 - 10/2023]; NETWORKING: NETWORK GATEWAY ECU: REMOVAL 2024 MY RAV4 RAV4 HV [10/2023 -        ]; NETWORKING: NETWORK GATEWAY ECU: REMOVAL