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Home >> Toyota >> 2017 >> Mirai >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Electronically Controlled Brake System - Diagnostic Codes (2 Of 2) & Circuit Tests >> Electronically Controlled Brake System >> DTC C1290-66: Steering Angle Sensor Zero Point Malfunction [06/2015 - ] >> Procedure

DTC C1290-66: Steering Angle Sensor Zero Point Malfunction [06/2015 - ]: Procedure

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

      Refer to CALIBRATION [06/2015 - ]

      Chassis > ABS/VSC/TRAC > Utility 

      Tester Display
      Test Mode

      HINT: 

      • When the stored zero point of the yaw rate and acceleration sensor is cleared, steering angle sensor zero point will also be cleared.
      • If the zero point and output value of the yaw rate and acceleration sensor and the output value of the speed sensors are not normal, 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 power switch off.
    2. Turn the power switch on (READY).
    3. Drive the vehicle straight ahead at 35 km/h (22 mph) or more for at least 5 seconds.
    4. Check that the steering wheel is centered correctly while driving straight ahead.

      HINT: 

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

      OK

      The steering wheel is centered correctly.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    ADJUST FRONT WHEEL ALIGNMENT OR STEERING POSITION. Refer to  ADJUSTMENT [06/2015 - 11/2018]  , or refer to  ADJUSTMENT [11/2018 - ] 

    Result: 

    OK 

    See step  3

  3. RECONFIRM DTC 
    1. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [06/2015 - ]

      Chassis > ABS/VSC/TRAC > Clear DTCs 

    2. Turn the power switch off.
    3. Turn the power switch on (READY).
    4. Drive the vehicle at a speed of 35 km/h (22 mph) or more and turn the steering wheel to the right and left.
    5. Check if the same DTC is output.

      Refer to DTC CHECK / CLEAR [06/2015 - ]

      Chassis > ABS/VSC/TRAC > Trouble Codes 

      Result

      Result Proceed to
      DTC C1290/66 is not output. A
      DTC C1290/66 is output. B

    Result: 

    END 

    Result: 

    REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY. Refer to  REMOVAL [06/2015 - 11/2018]  , or refer to  REMOVAL [11/2018 - ]