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 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, a correct steering angle sensor zero point cannot be acquired even if the vehicle is driven straight ahead at 35 km/h (22 mph) or more

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 position are adjusted as a result of an off-centered steering wheel, acquire the yaw rate and acceleration sensor zero point again after adjusting front wheel alignment and steering center position again.

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

NG: ADJUST FRONT WHEEL ALIGNMENT OR STEERING POSITION  (See ADJUSTMENT )

OK: Go to next step 

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

   Result 

   RESULT REFERENCE
   
   

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

B: REPLACE SKID CONTROL ECU  (See REMOVAL  )

A: END