Patent ID: 6289271
Filing Date: 2001-09-11
Classification: B60T

Abstract:
An apparatus for diagnosing a booster of a braking system for an automotive vehicle, said braking system including a brake operating member operated with a brake operating force, a master cylinder for producing a hydraulic pressure on the basis of an output force of said booster produced as a result of boosting of said brake operating force by said booster, and a wheel brake cylinder which is activated by the hydraulic pressure produced by said master cylinder, to brake a wheel of the automotive vehicle, said apparatus comprising:a determining device for making a provisional decision as to whether said booster is abnormal or not, on the basis of a relationship between an input quantity relating to an input of said booster and an output quantity relating to an output of said booster; andan optimizing device for determining said provisional decision as a final decision or rectifying said provisional decision.