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Home >> Lexus >> 2019 >> GS 350 Base, RWD >> Repair and Diagnosis >> Restraints >> Restraints Control Systems >> Pre-Collision System - Diagnostic Codes & Circuit Tests >> Pre-Collision System >> DTC B2090: Driving Support System Malfunction [09/2014 - 10/2015] >> Procedure
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DTC B2090: Driving Support System Malfunction [09/2014 - 10/2015]: Procedure

  1. CHECK FOR DTC (CRUISE CONTROL SYSTEM) 
    1. Check for DTCs (Refer to DTC CHECK / CLEAR [09/2014 - 10/2015] ).

      OK

      Cruise control system DTCs are not output.

    Result: 

    NG 

    GO TO CRUISE CONTROL SYSTEM 

    (Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2014 - ] )

    Result: 

    OK 

    See step  2

  2. CHECK FOR DTC (DYNAMIC RADAR CRUISE CONTROL SYSTEM) 
    1. Check for DTCs (Refer to DTC CHECK / CLEAR [09/2014 - 10/2015] ).

      OK

      Dynamic radar cruise control system DTCs are not output.

    Result: 

    NG 

    GO TO DYNAMIC RADAR CRUISE CONTROL SYSTEM 

    (Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2014 - 10/2015] )

    Result: 

    OK 

    See step  3

  3. CHECK FOR DTC (LANE-KEEPING ASSIST SYSTEM) 
    1. Check for DTCs (Refer to DTC CHECK / CLEAR [09/2014 - 10/2015] ).

      OK

      Lane-keeping assist system DTCs are not output.

    Result: 

    NG 

    GO TO LANE-KEEPING ASSIST SYSTEM 

    (Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2014 - 10/2015] )

    Result: 

    OK 

    See step  4

  4. CHECK FOR DTC (PRE-COLLISION SYSTEM) 
    1. Check the DTCs (Refer to DTC CHECK / CLEAR [09/2014 - 10/2015] ).

      OK

      DTCs for Pre-Collsion 2 are not output.

    Result: 

    NG 

    GO TO DIAGNOSTIC TROUBLE CODE CHART 

    (Refer to DIAGNOSTIC TROUBLE CODE CHART [09/2014 - 10/2015] )

    Result: 

    OK 

    See step  5

  5. ADJUST LANE RECOGNITION CAMERA SENSOR ASSEMBLY 
    1. Adjust the lane recognition camera sensor assembly (Refer to ADJUSTMENT [09/2014 - 10/2015] ).

    Result: 

    NEXT 

    See step  6

  6. CHECK FOR DTC (PRE-COLLISION SYSTEM) 
    1. Clear the DTCs (Refer to DTC CHECK / CLEAR [09/2014 - 10/2015] ).
    2. Check for DTCs (Refer to DTC CHECK / CLEAR [09/2014 - 10/2015] ).

      OK

      DTC B2090 is not output.

    Result: 

    OK 

    END 

    Result: 

    NG 

    REPLACE SEAT BELT CONTROL ECU 

    (Refer to REMOVAL [09/2014 - 10/2015] )