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Home >> Scion >> 2013 >> iQ Base >> Repair and Diagnosis >> Electrical >> Gauges >> Meter / Gauge / Display (Diagnostic Codes & Symptom Tests) (Except Electric) >> Meter / Gauge System >> DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0129: Lost Communication with Brake System Control Module; DTC U0131: Lost Communication with Power Steering Control Module; DTC U0151: Lost Communication with Airbag ECU >> Procedure

DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0129: Lost Communication with Brake System Control Module; DTC U0131: Lost Communication with Power Steering Control Module; DTC U0151: Lost Communication with Airbag ECU: Procedure

  1. CONFIRM DTC OUTPUT 
    1. Check DTC. Refer to DTC CHECK / CLEAR .
      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 
  3. USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING