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Home >> Toyota >> 2017 >> Prius Prime Advanced >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Smart Key System (Keyless Start) - Diagnostic Codes & Symptom Tests >> SMART KEY SYSTEM (for Start Function) >> DTC U0100: Lost Communication with ECM / PCM; DTC U0103: Lost Communication with Gear Shift Module "A"; DTC U0129: Lost Communication with Skid Control ECU; DTC U0140: Lost Communication with Main Body ECU; DTC U0142: Lost Communication with Main Body ECU; DTC U0155: Lost Communication with Combination Meter; DTC U0164: Lost Communication with A/C ECU; DTC U0293: Lost Communication with Hybrid Vehicle Control System; DTC U1117: Lost Communication with Accessory Gateway; DTC U1135: Lost Communication with Plug-in Control Module [09/2016 - ] >> Procedure
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DTC U0100: Lost Communication with ECM / PCM; DTC U0103: Lost Communication with Gear Shift Module "A"; DTC U0129: Lost Communication with Skid Control ECU; DTC U0140: Lost Communication with Main Body ECU; DTC U0142: Lost Communication with Main Body ECU; DTC U0155: Lost Communication with Combination Meter; DTC U0164: Lost Communication with A/C ECU; DTC U0293: Lost Communication with Hybrid Vehicle Control System; DTC U1117: Lost Communication with Accessory Gateway; DTC U1135: Lost Communication with Plug-in Control Module [09/2016 - ]: Procedure

  1. CHECK FOR DTC 
    1. Check for DTCs and note any DTCs that are output.

      Refer to DTC CHECK / CLEAR [09/2016 - ]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2016 - 12/2018]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2018 - ] 

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