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Home >> Lexus >> 2017 >> NX 200t Base, AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Lane Departure Alert System (W/ Steering Control) - Diagnostic Codes & Symptom Tests >> LANE DEPARTURE ALERT SYSTEM (w/ Steering Control) >> DTC U023A: Lost Communication with Front Camera Module [09/2017 - 05/2019] >> Procedure
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DTC U023A: Lost Communication with Front Camera Module [09/2017 - 05/2019]: Procedure

  1. CHECK FOR DTCs (POWER STEERING SYSTEM) 
    1. Check for DTCs.

      Chassis > EMPS > Trouble Codes 

      HINT: 

      When the lane departure alert system (w/ steering control) outputs DTC U023A, the power steering system may also output DTC U023A. If DTC U023A is output, perform diagnosis for the power steering system first.

      Result

      Result Proceed to
      DTC U023A is not output A
      DTC U023A is output B

    Result: 

    GO TO POWER STEERING SYSTEM 

    Result: 

    See step  2

  2. CHECK FOR DTCs 
    1. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [09/2017 - 05/2019]

      Chassis > LKA/LDA > Clear DTCs 

    2. Make sure that the DTC detection conditions are met.

      HINT: 

      If the conditions are not met, the system cannot detect the malfunction.

    3. Check for DTCs.

      Refer to DTC CHECK / CLEAR [09/2017 - 05/2019]

      Chassis > LKA/LDA > Trouble Codes 

      Result

      Result Proceed to
      DTC U023A is not output A
      DTC U023A is output B

    Result: 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2017 - 05/2019] 

    Result: 

    REPLACE FORWARD RECOGNITION CAMERA. Refer to  REMOVAL [09/2017 - 05/2019]