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汽车诊断是指在不解体(或仅拆卸个别小件)的情况下,查明故障部位及原因的作业。汽车诊断方法有传统诊断方法和仪器诊断方法两种。传统诊断方法也称为人工直观诊断法,是通过原地或道路试验,凭借维修人员的经验(有时也借助简单工具),通过观察来确定汽车的技术状况和故障的方法。该方法机动灵活、投资少,但速度慢、准确性差(这主要取决于维修人员的经验),不能给出定量数据。所以,在现代汽车维修中,不应一味追求高科技的仪器诊断技术,而应适当地应用传统诊断技术,如此,才可能既提高故障诊断的效率,又降低维修成本。
Vehicle diagnosis is to disassemble (or disassemble only a few small pieces), identify the location of the fault and the reasons for the operation. There are two kinds of traditional diagnostic methods and diagnostic methods for vehicle diagnostic methods. The traditional diagnostic method, also known as manual visual diagnosis, is a method of determining the technical condition and breakdown of an automobile by observing it by means of maintenance personnel’s experience (and sometimes by simple tools) through in-situ or road tests. The method is flexible and low investment, but slow, poor accuracy (which depends mainly on the maintenance staff experience), can not be given quantitative data. Therefore, in modern vehicle maintenance, should not blindly pursue high-tech equipment diagnostic technology, but should be properly applied traditional diagnostic techniques, so that it can not only improve the efficiency of fault diagnosis, but also reduce maintenance costs.