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Home >> Lexus >> 2017 >> LS 460 L, AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Lane Keeping Assist System (Diagnostic Codes & Circuit Tests) >> Lane-Keeping Assist System >> DTC U0122: Lost Communication with Vehicle Dynamics Control Module; DTC U0123: Lost Communication with Yaw Rate Sensor Module; DTC U0131: Lost Communication with Power Steering Control Module; DTC U0155: Lost Communication with Combination Meter; DTC U1104: Lost Communication with Driving Support ECU; DTC U1112: Lost Communication with Combination Switch ECU; DTC U1113: Lost Communication with Steering Pad ECU [09/2015 - ] >> Procedure
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DTC U0122: Lost Communication with Vehicle Dynamics Control Module; DTC U0123: Lost Communication with Yaw Rate Sensor Module; DTC U0131: Lost Communication with Power Steering Control Module; DTC U0155: Lost Communication with Combination Meter; DTC U1104: Lost Communication with Driving Support ECU; DTC U1112: Lost Communication with Combination Switch ECU; DTC U1113: Lost Communication with Steering Pad ECU [09/2015 - ]: 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

    Result:  A

    USE SIMULATION METHOD TO CHECK 

    (Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] )

    Result:  B

    GO TO CAN COMMUNICATION SYSTEM 

    (Refer to DIAGNOSIS SYSTEM [09/2015 - ] )