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Home >> Scion >> 2013 >> FR-S Standard Trans >> Repair and Diagnosis (Single Page) >> Electrical >> Gauges >> Meter / Gauge System (Diagnostic Codes & Symptom Tests) >> Meter / Gauge System >> DTC U0073: Control Module Communication Bus "A" Off; DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0122: Lost Communication with Vehicle Dynamics Control Module; DTC U0131: Lost Communication with Power Steering Control Module; DTC U0140: Lost Communication with Body Control Module; DTC U0151: Lost Communication with Restraints Control Module >> Procedure
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DTC U0073: Control Module Communication Bus "A" Off; DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0122: Lost Communication with Vehicle Dynamics Control Module; DTC U0131: Lost Communication with Power Steering Control Module; DTC U0140: Lost Communication with Body Control Module; DTC U0151: Lost Communication with Restraints Control Module: Procedure

  1. CONFIRM DTC OUTPUT 
    1. Check DTC. Refer to DTC CHECK / CLEAR [03/2012 - ] .
      Result Proceed to
      CAN communication DTC is not output A
      CAN communication DTC is output B

    B → See step   2 

    A → See step   3 

  2. GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - 05/2013] 
  3. USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - 05/2013]