Automotive Electronic Control Unit Reprogramming Using Delta Method-A Review

With the growth of the population in urban areas, the number of vehicles is also increasing in the cities. There is a growth of electronic complexity inside an intelligent vehicle and the diagnosis and reprogramming methods have to be improved. With increasing complexity of electronic systems in vehicles, the need for frequent and extensive software updates are increasing. These updates are important for the maintenance and enhancement of the software components. There is also an increase in bugs in the vehicles. This calls for upgrades for the ECU software and improved security functions. As the upgrades increase, the time for updating the ECUs also increase. The software update time also depends on the size of the data update. This paper presents the overview on ECU reprogramming, different reprogramming methods, the delta method of reprogramming with its advantages and the ECU communication.