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Home >> Lexus >> 2019 >> RX 450h Base >> Repair and Diagnosis (Single Page) >> Suspension >> Electronic Suspension >> Adaptive Variable Suspension System (Diagnostic Codes) >> Adaptive Variable Suspension System >> DTC U0101: Lost Communication With TCM; DTC U0122: Lost Communication With Vehicle Dynamics Control Module; DTC U0124: Lost Communication with Lateral Acceleration Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0293: Lost Communication with Hybrid Vehicle Control System [10/2015 - ] >> Procedure
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DTC U0101: Lost Communication With TCM; DTC U0122: Lost Communication With Vehicle Dynamics Control Module; DTC U0124: Lost Communication with Lateral Acceleration Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0293: Lost Communication with Hybrid Vehicle Control System [10/2015 - ]: Procedure

  1. CHECK FOR DTCS 
    1. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [10/2015 - ]

      Chassis > Air suspension > Clear DTCs 

    2. Turn the power switch off.
    3. Drive the vehicle at a speed of 30 km/h (19 mph) or more for 10 seconds or more.
    4. Check for DTCs.

      Refer to DTC CHECK / CLEAR [10/2015 - ]

      Chassis > Air suspension > Trouble Codes 

      Result

      Result Proceed to
      CAN DTCs are not output A
      CAN DTCs are output B

      HINT: 

      If a CAN communication malfunction DTC and a related sensor malfunction DTC are output at the same time, the CAN communication malfunction must be repaired before troubleshooting the sensor malfunction DTC.

    Result: 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - 08/2016]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2016 - 12/2017]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2017 - 03/2018]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [03/2018 - 08/2019]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - 07/2020]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [07/2020 - ] 

    Result: 

    GO TOx CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - 08/2019]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - ]