Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: ECU Malfunction (B1003)

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual / Power Source, Network / Networking / Can Communication System(for Gasoline Model) / ECU Malfunction (B1003)

DESCRIPTION

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Note

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)

-

PROCEDURE

1.

RECONFIRM DTC OUTPUT

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(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)

    Air Conditioning Amplifier Communication Stop Mode

    Blind Spot Monitor Sensor Communication Stop Mode

    See More:

    Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Sfi System: Definition Of Terms
    DEFINITION OF TERMS Term Definition Monitor Description Description of what the ECM monitors and how it detects malfunctions (monitoring purpose and details). Related DTCs Group of diagnostic trouble codes that are output by the ECM based on the same malfunction detection logic. Typical Enabling Con ...

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