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Home >> Lexus >> 2012 >> LS 460 AWD >> Repair and Diagnosis (Single Page) >> Steering >> Steering Gear >> Variable Gear Ratio Steering System (Diagnostic Codes & Symptom Tests) >> Variable Gear Ratio Steering System >> DTC U0100/56, U0122/56, U0123/56, U0126/56, U0131/56: Lost Communication with ECM/PCM "A"; Lost Communication with Vehicle Dynamics Control Module; Lost Communication with Yaw Rate (Deceleration) Sensor Module; Lost Communication with Steering Angle Sensor Module; Lost Communication with Power Steering Control Module >> Procedure

DTC U0100/56, U0122/56, U0123/56, U0126/56, U0131/56: Lost Communication with ECM/PCM "A"; Lost Communication with Vehicle Dynamics Control Module; Lost Communication with Yaw Rate (Deceleration) Sensor Module; Lost Communication with Steering Angle Sensor Module; Lost Communication with Power Steering Control Module: Procedure

  1. CHECK DTC 
    1. Check for DTCs. Refer to DTC CHECK/CLEAR .

      Result

      Result Proceed to
      DTC is not output OK
      DTC is output NG

    NG → See step   2 

    OK → END 

  2. GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to  HOW TO PROCEED WITH TROUBLESHOOTING