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Home >> Lexus >> 2017 >> GS 450h Base >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Air Conditioning System (Diagnostic Codes & Circuit Tests) >> Air Conditioning System >> DTC U0131: Lost Communication with Power Steering Control Module; DTC U0142: Lost Communication with Main Body ECU; DTC U0155: Lost Communication with Combination Meter; DTC U0163: Lost Communication with Navigation Control Module; DTC U0293: Lost Communication with Hybrid Control Module [09/2014 - ] >> Procedure
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DTC U0131: Lost Communication with Power Steering Control Module; DTC U0142: Lost Communication with Main Body ECU; DTC U0155: Lost Communication with Combination Meter; DTC U0163: Lost Communication with Navigation Control Module; DTC U0293: Lost Communication with Hybrid Control Module [09/2014 - ]: Procedure

  1. CHECK CAN COMMUNICATION SYSTEM 
    1. Use the Techstream to check if the CAN communication system is functioning normally (See page. Refer to DIAGNOSIS SYSTEM [09/2014 - 10/2015] Refer to DIAGNOSIS SYSTEM [10/2015 - ] ).
      RESULT

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

    Result:  A

    USE SIMULATION METHOD TO CHECK 

    (See page. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2014 - 10/2015] Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - ] )

    Result:  B

    GO TO CAN COMMUNICATION SYSTEM 

    (See page. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2014 - 10/2015] Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - ] )