Inspection Procedure

1. Perform zero point calibration of the yaw rate and acceleration sensor (See CALIBRATION  ).

   HINT:

   • When the stored zero point of the yaw rate and acceleration sensor is erased, steering angle sensor zero point will also be erased.
   • 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.

1. Drive the vehicle straight ahead at 35 km/h (22 mph) or more for at least 5 seconds.
2. Check that the centered position of the steering wheel is correctly set while driving straight ahead.

   HINT:

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

   OK: The centered position of the steering wheel is correctly set. 

NG: ADJUST FRONT WHEEL ALIGNMENT OR STEERING POSITION 

OK: Go to Next Step 

1. Turn the engine switch off.
2. Clear the DTC (See DTC CHECK/CLEAR  ).
3. Start the engine.
4. Drive the vehicle and turn the steering wheel to the right and left at the speed of 35 km/h (22 mph) or more.
5. Check if the same DTC is recorded (See DTC CHECK/CLEAR  ).

   Result 

   RESULT REFERENCE
   
   

   Condition	Proceed to
   DTC (C1290/66) is not output	A
   DTC (C1290/66) is output	B

B: REPLACE BRAKE ACTUATOR ASSEMBLY 

A: END