Importance

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Abstract

A method of checking the functioning of a driving wheel slip control system installed in a vehicle. Driving wheels are placed on support rollers and rotatably supported thereby. The driving wheels are driven by the engine. False signals indicative of tentative rotational speeds of trailing wheels are supplied to an ECU which in turn outputs a control signal for controlling the engine. Predetermined monitoring signals including at least the control signal output from the ECU are taken out from the driving wheel slip control system. It is determined whether the predetermined monitoring signals show values falling within respective predetermined allowable ranges. Further, a steering handle of the vehicle may be turned at the same time of rotation of the driving wheels, the steering angle of which is detected by a steering angle sensor. Further, instead of using the false signals, the trailing wheels may be placed on second support rollers for rotatably supporting the trailing wheels thereby. The second support rollers are capable of rotatively driving the trailing wheels.

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First Claim