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Home >> Scion >> 2013 >> FR-S Standard Trans >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Smart Key System (For Start Function) (Diagnostic Codes & Symptom Tests) >> SMART KEY SYSTEM (for Start Function) >> DTC U0073: Control Module Communication Bus Off; DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0101: Lost Communication with TCM; DTC U0122: Lost Communication with Vehicle Dynamics Control Module; DTC U0140: Lost Communication with Body Control Module; DTC U0155: Lost Communication with Instrument Panel Cluster Control Module (Combination Meter); DTC U0401: Invalid Data Received from ECM/PCM "A"; DTC U0422: Invalid Data Received from Body Control Module >> Procedure
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DTC U0073: Control Module Communication Bus Off; DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0101: Lost Communication with TCM; DTC U0122: Lost Communication with Vehicle Dynamics Control Module; DTC U0140: Lost Communication with Body Control Module; DTC U0155: Lost Communication with Instrument Panel Cluster Control Module (Combination Meter); DTC U0401: Invalid Data Received from ECM/PCM "A"; DTC U0422: Invalid Data Received from Body Control Module: Procedure

  1. CHECK FOR DTC 
    1. Note any DTCs that are output. Refer to DTC CHECK / CLEAR [05/2013 - ] .

    NEXT → See step   2 

  2. GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [05/2013 - ] 
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