Inspection Procedure

WARNING: This page is about a different car, the 2009 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: When replacing the brake actuator assembly, perform zero point calibration (See CALIBRATION ).

PERFORM ZERO POINT CALIBRATION OF YAW RATE AND ACCELERATION SENSOR
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.
CHECK STEERING ANGLE SENSOR ZERO POINT CALIBRATION
1. Drive the vehicle straight ahead at 35 km/h (22 mph) or more for at least 5 seconds.
2. 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 position of the steering wheel, acquire yaw rate and acceleration sensor zero point again after the adjustments are completed.
  
  OK:
  
  The center position of the steering wheel is correctly set.
NG: ADJUST FRONT WHEEL ALIGNMENT OR STEERING POSITION (See FRONT WHEEL ALIGNMENT )

OK: Go to next step

RECONFIRM DTC

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

Result

RESULT CHART

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

B: REPLACE BRAKE ACTUATOR ASSEMBLY (See REMOVAL )

A: END