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Home >> Toyota >> 2023 >> GR86 Base, Automatic Trans >> Repair and Diagnosis (Single Page) >> Brakes >> Mechanical - Hydraulic >> Electronically Controlled Brake System - Diagnostic Codes, Symptom Tests & Circuit Tests >> Electronically Controlled Brake System >> DTC U0073: Control Module Communication Bus Off; DTC U0079: Control Module Communication Bus "G" Off; DTC U0100: Lost Communication With ECM/PCM "A"; DTC U0101: Lost Communication With TCM; DTC U0126: Lost Communication With Steering Angle Sensor Module; DTC U0140: Lost Communication With Body Control Module; DTC U0146: Lost Communication With Serial Data Gateway Module "A"; DTC U0155: Lost Communication With Instrument Panel Cluster (IPC) Control Module; DTC U0401: Invalid Data Received From ECM/PCM "A"; DTC U0402: Invalid Data Received From TCM; DTC U0422: Invalid Data Received From Body Control Module; DTC U0423: Invalid Data Received From Instrument Panel Cluster Control Module; DTC U0428: Invalid Data Received From Steering Angle Sensor Module; DTC U1235: Lost Communication With EyeSight; DTC U1433: Invalid Data Received From EyeSight; DTC U1C00: Invalid Authentication Data Received From Gateway; DTC U1C07: Invalid Authentication Data Received From ECM/PCM PU-Bus; DTC U1C0C: Invalid Authentication Data Received From Eyesight PU-Bus; DTC U1C0F: Invalid Authentication Data Received From Steering Angle Sensor Module CH-Bus; DTC U1E00: Lost Communication of Authentication Data With Gateway "A" PU-Bus [11/2021 - ] >> Procedure
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DTC U0073: Control Module Communication Bus Off; DTC U0079: Control Module Communication Bus "G" Off; DTC U0100: Lost Communication With ECM/PCM "A"; DTC U0101: Lost Communication With TCM; DTC U0126: Lost Communication With Steering Angle Sensor Module; DTC U0140: Lost Communication With Body Control Module; DTC U0146: Lost Communication With Serial Data Gateway Module "A"; DTC U0155: Lost Communication With Instrument Panel Cluster (IPC) Control Module; DTC U0401: Invalid Data Received From ECM/PCM "A"; DTC U0402: Invalid Data Received From TCM; DTC U0422: Invalid Data Received From Body Control Module; DTC U0423: Invalid Data Received From Instrument Panel Cluster Control Module; DTC U0428: Invalid Data Received From Steering Angle Sensor Module; DTC U1235: Lost Communication With EyeSight; DTC U1433: Invalid Data Received From EyeSight; DTC U1C00: Invalid Authentication Data Received From Gateway; DTC U1C07: Invalid Authentication Data Received From ECM/PCM PU-Bus; DTC U1C0C: Invalid Authentication Data Received From Eyesight PU-Bus; DTC U1C0F: Invalid Authentication Data Received From Steering Angle Sensor Module CH-Bus; DTC U1E00: Lost Communication of Authentication Data With Gateway "A" PU-Bus [11/2021 - ]: Procedure

  1. GO TO CAN COMMUNICATION SYSTEM. 

    HINT: 

    Refer to "CAN COMMUNICATION SYSTEM" for diagnostic procedure.

    Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - ]

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    END