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Home >> Lexus >> 2012 >> IS F >> Repair and Diagnosis >> Brakes >> Traction Control >> Vehicle Stability Control System (Diagnostic Codes & Symptom Tests) >> Vehicle Stability Control System >> DTC C1240: Yaw Rate Sensor Discrimination >> Procedure

DTC C1240: Yaw Rate Sensor Discrimination: Procedure

  1. CHECK PART NUMBER (YAW RATE AND ACCELERATION SENSOR) 
    1. Check that the part number of the installed yaw rate and acceleration sensor is correct.

      OK

      The yaw rate and acceleration sensor installed in the vehicle has the correct part number.

    NG → See step   3 

    OK: Go to next step 

  2. RECONFIRM DTC 
    1. Clear the DTCs. Refer to DTC CHECK / CLEAR .
    2. Check if the same DTC is recorded. Refer to DTC CHECK / CLEAR .

      Result

      Result Proceed to
      DTC (C1240) is not output A
      DTC (C1240) is output B

    B → See step   5 

    A → See step   4 

  3. REPLACE YAW RATE AND ACCELERATION SENSOR. Refer to  REMOVAL 
  4. CHECK FOR INTERMITTENT PROBLEMS. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING 
  5. REPLACE BRAKE ACTUATOR ASSEMBLY. Refer to  REMOVAL