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Home >> Lexus >> 2016 >> GS 450h Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Cruise Control Systems >> Lane Keeping Assist System (Diagnostic Codes & Circuit Tests) >> Lane-Keeping Assist System >> DTC U0101: Lost Communication With TCM; DTC U0123: Lost Communication with Yaw Rate Sensor Module; 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 U0134: Lost Communication with DRS Module; DTC U0142: Lost Communication with Body Control Module "B"; DTC U0155: Lost Communication with Combination Meter; DTC U0293: HV ECU Communication [10/2015 - ] >> Procedure
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DTC U0101: Lost Communication With TCM; DTC U0123: Lost Communication with Yaw Rate Sensor Module; 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 U0134: Lost Communication with DRS Module; DTC U0142: Lost Communication with Body Control Module "B"; DTC U0155: Lost Communication with Combination Meter; DTC U0293: HV ECU Communication [10/2015 - ]: Procedure

  1. CHECK FOR DTCs 
    1. Clear the DTCs.

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

    2. Perform the following procedure.

      HINT: 

      If the following procedure is not performed, the previously output DTC cannot be detected.

      1. Turn the power switch on (IG) and wait 1 minute or more.
      2. Drive the vehicle at a speed of 1 km/h or 1 mph or more for 5 seconds or more.
    3. Check for DTCs.

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

      Result

      Result Proceed to
      DTC U0101, U0123, U0126, U0129, U0130, U0131, U0134, U0142, U0155 and U0293 are not output A
      DTC U0101, U0123, U0126, U0129, U0130, U0131, U0134, U0142, U0155 or U0293 is output B

    Result:  1

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - ] 

    Result:  2

    GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - ]