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Home >> Lexus >> 2015 >> LS 460 Base, AWD >> Repair and Diagnosis (Single Page) >> Restraints >> Restraints Control Systems >> Pre-Collision System (Diagnostic Codes) (W/O Driver Monitor Camera) >> PRE-COLLISION SYSTEM (w/o Driver Monitor Camera) >> DTC B2090: Driving Support System Malfunction [10/2014 - ] >> Procedure

DTC B2090: Driving Support System Malfunction [10/2014 - ]: Procedure

  1. CHECK FOR DTC 
    1. Enter the following menus: Body Electrical / Pre-Collision 2, Radar Cruise / Trouble Code.
    2. Check for DTCs.
      RESULT

      Result Proceed to
      "Pre-Collision 2" or "Radar Cruise" DTC is not output A
      "Pre-Collision 2" or "Radar Cruise" DTC is output B

    B → GO TO RELEVANT FLOWCHART 

    A: Go to next step 

  2. CHECK FOR DTC 
    1. Enter the following menus: Body Electrical / Pre-Collision 1 / Trouble Code /
    2. Select "Clear" and clear the data.
    3. Recheck for DTCs.

      OK

      DTC B2090 is not output.

    NG → See step   3 

    OK → See step   4 

  3. REPLACE SEAT BELT CONTROL ECU. Refer to  REMOVAL [10/2014 - ] 
  4. USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2014 - ]