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Home >> Lexus >> 2010 >> LS 600hL >> Repair and Diagnosis (Single Page) >> Steering >> Manual Steering >> Power Steering (Diagnostic Codes & Circuit Tests) >> Power Steering System >> DTC U0129: Lost Communication with Brake System Control Module; DTC U0130: Lost Communication with Steering Effort Control Module; DTC U1104: Lost Communication with Driving Support ECU; DTC U1105: Lost Communication with Parking Assist ECU >> Procedure
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DTC U0129: Lost Communication with Brake System Control Module; DTC U0130: Lost Communication with Steering Effort Control Module; DTC U1104: Lost Communication with Driving Support ECU; DTC U1105: Lost Communication with Parking Assist ECU: Procedure

  1. CHECK DTC 
    1. Using the Techstream, check for DTCs. Refer to DTC CHECK / CLEAR .
      RESULT

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

    B → See step   2 

    A → See step   3 

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