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Home >> Lexus >> 2020 >> RC 350 Base, AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Collision/Avoidance >> Pre-Collision System - Diagnostic Codes (2 Of 2) & Circuit Tests >> Pre-Collision System >> DTC U0319-51: Software Incompatibility with Steering Effort Control Module Not Programmed; DTC U0319-57: Software Incompatibility with Steering Effort Control Module Invalid/Incompatible Software Component [10/2022 - ] >> Procedure
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DTC U0319-51: Software Incompatibility with Steering Effort Control Module Not Programmed; DTC U0319-57: Software Incompatibility with Steering Effort Control Module Invalid/Incompatible Software Component [10/2022 - ]: Procedure

  1. CHECK FOR DTC (VGRS) 
    1. Check the DTCs.

      Chassis > VGRS > Trouble Codes 

      HINT: 

      If the pre-collision system outputs U0319-51 or U0319-57, variable gear ratio steering system DTCs may also have been output. Check the variable gear ratio steering system first.

      OK

      Variable gear ratio steering system DTCs are not output.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE VGRS ECU (FRONT STEERING CONTROL ECU). Refer to  REMOVAL [09/2014 - ] 

    Result: 

    NG 

    GO TO VARIABLE GEAR RATIO STEERING SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2014 - ]