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Home >> Lexus >> 2015 >> LS 600h >> Repair and Diagnosis (Single Page) >> Steering >> Manual Steering >> Variable Gear Ratio Steering System - Diagnostic Codes & Symptom Tests >> Variable Gear Ratio Steering System >> DTC U0122/56: Lost Communication with Vehicle Dynamics Control Module; DTC U0123/56: Lost Communication with Yaw Rate (Deceleration) Sensor Module; DTC U0126/56: Lost Communication with Steering Angle Sensor Module; DTC U0131/56: Lost Communication with Power Steering Control Module [10/2014 - ] >> Procedure

DTC U0122/56: Lost Communication with Vehicle Dynamics Control Module; DTC U0123/56: Lost Communication with Yaw Rate (Deceleration) Sensor Module; DTC U0126/56: Lost Communication with Steering Angle Sensor Module; DTC U0131/56: Lost Communication with Power Steering Control Module [10/2014 - ]: Procedure

  1. CHECK DTC 
    1. Check for DTCs. Refer to DIAGNOSIS SYSTEM [10/2014 - ] .
      RESULT

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

    NG → See step   3 

    OK → See step   2 

  2. USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2014 - ] 
  3. GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2014 - ]