The issiues of neural network based Auto Fault Diagnosis Expert System are discussed in depth, and some existed problems are settled, lastly some new theories and methods are advanced.

• 针对基于神经网络技术的汽车故障诊断专家系统开发中的问题进行深入研究,解决系统开发中的几个实际问题,提出一些新的理论与方法。