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Home >> Toyota >> 2016 >> 4Runner Limited, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 12 (Touch Select 2-4 And High-Low System (VF2CM) - Diagnostic Codes & Circuit Tests) >> Touch Select 2-4 And High-Low System >> DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0122: Lost Communication With Vehicle Dynamics Control Module [08/2019 - ] >> Procedure

DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0122: Lost Communication With Vehicle Dynamics Control Module [08/2019 - ]: Procedure

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  1. PERFORM DTC 
    1. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [08/2019 - ]

    2. Check if the same DTCs are output.

      Refer to DTC CHECK / CLEAR [08/2019 - ]

      Result

      Result Proceed to
      DTC is output A
      DTC is not output B

    Result: 

    A 

    CHECK CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - ] 

    Result: 

    B 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - ] 

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