Fault Reason and Diagnosis of Electronic Control Automatic Transmission of Modern

The mechanical transmission of automobile is very effi cient, reliable and simple structure, but it is easy to wear the parts prematurely because of its dynamic load. In the case of complex external conditions, the frequent operation of the clutch, shift lever and throttle, increasing the burden on the driver is not conducive to safe driving. In recent decades, automatic transmission has been an unprecedented development; electronic control automatic transmission has become the development direction of modern car transmission. But the electronic control automatic transmission structure complex production cost is high, its repair and troubleshooting put forward the harsh requirements of the maintenance personnel maintenance technology and understanding of the degree also constitutes a certain degree of difficulty, this article for the modern car electronic control automatic transmission development History and composition and function of the failure of the fi le is not up to speed to make a major study, discusses the modern car electronic control automatic transmission of the main components and functions and upshift is not speed. The cause and diagnosis of the exclusion of the automatic control of automotive electronic control and maintenance of great signifi cance.