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Home >> Lexus >> 2012 >> LS 460 AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Cruise Control Systems >> Lane Keeping Assist System (Diagnostic Codes & Circuit Tests) >> Lane-Keeping Assist System >> DTC U0122, U0123, U0131, U0155, U1104, U1112, U1113: Lost Communication with Vehicle Dynamics Control Module; Lost Communication with Yaw Rate Sensor Module; Lost Communication with Power Steering Control Module; Lost Communication with Combination Meter; Lost Communication with Driving Support ECU; Lost Communication with Combination Switch ECU; Lost Communication with Steering Pad ECU >> Procedure

DTC U0122, U0123, U0131, U0155, U1104, U1112, U1113: Lost Communication with Vehicle Dynamics Control Module; Lost Communication with Yaw Rate Sensor Module; Lost Communication with Power Steering Control Module; Lost Communication with Combination Meter; Lost Communication with Driving Support ECU; Lost Communication with Combination Switch ECU; Lost Communication with Steering Pad ECU: Procedure

  1. CHECK FOR DTC (CAN COMMUNICATION SYSTEM) 
    1. Select "Bus Check" from the "System Select" screen on the Techstream.
    2. Select "Communication Malfunction DTC" from the "Bus Check" screen, and then select "Enter".
      RESULT

      Result Proceed to
      CAN DTC is not output A
      CAN DTC is output B

    B → See step   3 

    A → See step   2 

  2. USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING 
  3. GO TO CAN COMMUNICATION SYSTEM. Refer to  DIAGNOSIS SYSTEM