Automotive companies are applying mechanical / electronic technologies to various automotive parts for decreasing vehicle vibration. One of the ways to reduce engine vibration is to apply an active engine control mount(ACM). In this paper, to decrease design errors by predicting and correcting signal malfunction and electromagnetic compatibility(EMC) [1][2] in the design process of ACM electronic control module. To do this process, we analyzed the power integrity(PI) analysis which is one of Computer Aided Engineering(CAE) methods. In addition, we introduce ways to secure SI and PI using various methods. So, by applying the analysis results to the design stage, we improved the electromagnetic wave performance. Also, we can reduce the PCB design cost, and improved the reliability of the electromagnetic wave.