Dtc C1290/66 Steering Angle Sensor Zero Point Malfunction


DESCRIPTION

INSPECTION PROCEDURE

PERFORM ZERO POINT CALIBRATION OF YAW RATE AND ACCELERATION SENSOR

CHECK STEERING ANGLE SENSOR ZERO POINT CALIBRATION

RECONFIRM DTC

DTC C1290/66 Steering Angle Sensor Zero Point Malfunction


DESCRIPTION

The skid control ECU acquires the steering angle sensor zero point every time the ignition switch is turned to ON and the vehicle is driven at 35 km/h (22 mph) or more for approximately 5 seconds. The ECU also stores the previous zero point.
If the front wheel alignment or steering wheel position is adjusted without disconnecting the negative battery terminal, or if the yaw rate and acceleration sensor zero point is not acquired after the adjustments have been completed, the skid control ECU detects the difference between the previous zero point and newly acquired zero point and outputs this DTC to indicate a poor adjustment.
The steering angle sensor zero point malfunction warning will be canceled by turning the ignition switch off.

DTC Code
DTC Detection Condition
Trouble Area
C1290/66
The steering angle sensor zero point calibration position vastly differs from the recorded value.
  1. Yaw rate and acceleration sensor zero point calibration incomplete
  2. Poor adjustment of centered position of steering wheel
  3. Poor adjustment of front wheel alignment

INSPECTION PROCEDURE

NOTICE:
When replacing the brake actuator assembly, perform zero point calibration (Toyota Fortuner RM000000XHR02TX.html).
1.PERFORM ZERO POINT CALIBRATION OF YAW RATE AND ACCELERATION SENSOR

  1. Perform zero point calibration of the yaw rate and acceleration sensor (Toyota Fortuner RM000000XHR02TX.html).

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

NEXT


2.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.

  1. Check that the centered position of the steering wheel is correctly set while driving straight ahead.

    HINT:
    If the front wheel alignment and steering position are adjusted as a result of an abnormal centered position of the steering wheel, acquire the 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


3.RECONFIRM DTC

  1. Turn the ignition switch off.

  1. Clear the DTC(s) (Toyota Fortuner RM000000XHV03YX.html).

  1. Start the engine.

  1. Drive the vehicle and turn the steering wheel to the right and left at a speed of 35 km/h (22 mph) or more.

  1. Check if the same DTC is recorded (Toyota Fortuner RM000000XHV03YX.html).

    Result
    Result
    		Proceed to
    DTC not output
    		A
    DTC output
    		B



B
REPLACE BRAKE ACTUATOR ASSEMBLY
A

END