Patent ID: 6883496

Claim:
A control system for a throttle valve driving apparatus which comprises a driving unit for driving a throttle valve provided along an induction system of an internal combustion engine installed in a vehicle, a biasing unit for holding the throttle valve at a predetermined hold opening while the throttle valve is not driven by the driving unit, an accelerator operation amount detecting unit for detecting an operation amount of an accelerator pedal of the vehicle and a throttle valve position detecting unit for detecting an opening of the throttle valve, the control system comprising: a target opening setting unit for setting a target opening for the throttle valve opening-based on the accelerator pedal operation amount; a driving control unit for controlling the driving unit so that the throttle valve opening becomes the target opening; an abnormality determining unit for determining an abnormality of the throttle valve driving apparatus; a speed detecting unit for detecting a running speed of the vehicle; and a limiting unit for limiting the opening of the throttle valve according to the running speed of the vehicle when the abnormality of the throttle valve driving apparatus is determined by the abnormality determining unit.