LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2020 >> LS 500 Base, AWD >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Electronically Controlled Brake System (W/ Vacuum Brake Booster) - Diagnostic Codes (2 Of 4) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/ Vacuum Brake Booster) >> DTC C1290: Steering Angle Sensor Zero Point Malfunction [12/2017 - 09/2018] >> Procedure

DTC C1290: Steering Angle Sensor Zero Point Malfunction [12/2017 - 09/2018]: Procedure

  1. PERFORM ZERO POINT CALIBRATION OF YAW RATE AND ACCELERATION SENSOR 
    1. Perform zero point calibration of the acceleration sensor (yaw rate sensor).

      Refer to CALIBRATION [12/2017 - 09/2018]

      HINT: 

      • When the stored zero point of the acceleration sensor (yaw rate sensor) is cleared, steering angle sensor zero point will also be cleared.
      • If the zero point and output value of the acceleration sensor (yaw rate sensor) and the output value of the speed sensors are not normal, the steering angle sensor zero point cannot be acquired normally even if the vehicle is driven straight ahead at 35 km/h (22 mph) or more.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  2

  2. CHECK STEERING ANGLE SENSOR ZERO POINT CALIBRATION 
    1. Turn the engine switch off.
    2. Start the engine.
    3. Drive the vehicle straight ahead at 35 km/h (22 mph) or more for at least 5 seconds.
    4. Check that the center position of the steering wheel is correctly set while driving straight ahead.

      HINT: 

      If front wheel alignment and steering are adjusted as a result of an off-center steering wheel, acquire the acceleration sensor (yaw rate sensor) zero point again after the adjustments are completed.

      OK

      The steering wheel is centered correctly.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    END 

    Result: 

    NG 

    ADJUST FRONT WHEEL ALIGNMENT OR STEERING POSITION 

    For AWD: Refer to ADJUSTMENT [12/2017 - 09/2018]

    For 2WD: Refer to ADJUSTMENT [12/2017 - 09/2018]