CAN COMMUNICATION SYSTEM(w/ Toyota Safety Sense), Diagnostic DTC:B1003

DTC Code DTC Name
B1003 ECU Malfunction

DESCRIPTION

This DTC is stored when the central gateway ECU (network gateway ECU) detects an internal malfunction.

DTC No. DTC Detection Condition Trouble Area
B1003 The central gateway ECU (network gateway ECU) detects an internal malfunction Central gateway ECU (network gateway ECU)

PROCEDURE


  1. CHECK DTC


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Central Gateway / Trouble Codes.

      OK
      DTC B1003 is not output.

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

    REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) Click here