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 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 an off-centered steering wheel, acquire yaw rate and acceleration sensor zero point again after adjusting front wheel alignment and steering position again.

   OK: 

   The centered 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