Importance

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Abstract

A vehicular steering condition detecting apparatus a position sensor and a pulse generator each of which operate to generate an output in conjunction with the operating condition of a steering wheel, and a microcomputer which makes a comparison between a change in the output of the position sensor due to the operation of the steering wheel by the driver and the number of pulses generated by the pulse generator for every sampling period of a predetermined length, and determines that a failure occurred in the position sensor or the pulse generator if there exists no proportional relationship therebetween. The microcomputer compares between a change in the output of the position sensor due to the operation of the steering wheel by the driver and the number of pulses generated by the pulse generator for every sampling period of a predetermined length, and determines, by utilizing the fact that there is a proportional relation between the change in the position sensor output and the nuber of output pulses of the pulse generator when the position sensor and the pulse generator are normal, that a failure in the position sensor or the pulse generator occurred if there no longer exists a proportional relation therebetween.

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First Claim