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Home >> Lexus >> 2021 >> IS 350 RWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Parking Assist Monitor System - Diagnostic Codes & Symptom Tests >> Parking Assist Monitor System >> DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0129: Lost Communication with Brake System Control Module; DTC U0130: Lost Communication with VGRS; DTC U0131: Lost Communication with Power Steering Control Module; DTC U0140: Lost Communication with Body Control Module; DTC U0163: Lost Communication with Navigation Control Module; DTC U1110: Lost Communication with Intuitive Parking Assist Module [06/2014 - 10/2016] >> Procedure
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DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0129: Lost Communication with Brake System Control Module; DTC U0130: Lost Communication with VGRS; DTC U0131: Lost Communication with Power Steering Control Module; DTC U0140: Lost Communication with Body Control Module; DTC U0163: Lost Communication with Navigation Control Module; DTC U1110: Lost Communication with Intuitive Parking Assist Module [06/2014 - 10/2016]: Procedure

  1. CHECK DTC OUTPUT 
    1. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [06/2014 - 09/2020]

      Chassis > Advanced Parking Guidance/Parking Assist Monitor > Clear DTCs 

    2. Recheck for DTCs and check that no DTCs are output.

      Refer to DTC CHECK / CLEAR [06/2014 - 09/2020]

      Chassis > Advanced Parking Guidance/Parking Assist Monitor > Trouble Codes 

      HINT: 

      Result

      Result Proceed to
      DTCs are output A
      No DTCs are output B

    Result: 

    GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [04/2013 - 10/2016] 

    Result: 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2014 - 08/2015]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2015 - 10/2016]