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Home >> Lexus >> 2021 >> ES 250 F Sport >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Can Communication System (Except Hybrid) - Circuit Tests (1 Of 4) & Diagnostic Codes >> CAN COMMUNICATION SYSTEM (for Gasoline Model) >> ECM Communication Stop Mode [08/2020 - 08/2021] >> Description

ECM Communication Stop Mode [08/2020 - 08/2021]: Description

Detection Item Symptom Trouble Area
ECM Communication Stop Mode Any of the following conditions are met:
  • Communication stop for "ECM (Engine)" is indicated on the "Communication Bus Check" screen of the Techstream.

    Refer to PROBLEM SYMPTOMS TABLE [08/2020 - ]

  • Communication stop history for "ECM (Engine)" is indicated on the "Communication Bus Check (Detail)" screen of the Techstream. (The Lost Communication Time value for "ECM (Engine)" is 6 or more.)

    Refer to PROBLEM SYMPTOMS TABLE [08/2020 - ]

  • Communication system DTCs (DTCs that start with U) that correspond to "ECM Communication Stop Mode" in "DTC Combination Table" are output.

    Refer to DTC COMBINATION TABLE [08/2020 - 08/2021]

  • ECM main line or connector
  • Power source circuit of ECM
  • ECM ground circuit
  • ECM