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该案例在处理过程中,作者最后通过察看数据流发现发动机令却液温度异常,就据此直接确定是发动机冷却液温度传感器损坏,更换了发动机冷却液温度传感器,这样的做法有些不妥。编者认为,在最后确定故障点之前,最起码要对发动机冷却液温度传感器及其线路进行相关检查,以确认是元件损坏还是线路接触问题,因为如果发动机冷却液温度传感器线路中存在接触不良的情况,接触电阻忽大忽小,也同样会导致发动机电控单元接收的发动机冷却液温度数据发生变化。作者的做法有司能会导致误判锚误。
In the process of this case, the author finally observed the data flow to find that the engine fluid temperature abnormalities, it is directly determined that the engine coolant temperature sensor is damaged, the replacement of the engine coolant temperature sensor, this approach is somewhat inappropriate. The editor believes that at the very least before the point of failure to determine the engine coolant temperature sensor and the line at least related checks to confirm the component damage or line contact problems, because if the engine coolant temperature sensor line in the case of poor contact , Contact resistance suddenly big small suddenly small, also can cause engine electronic control unit receives the engine coolant temperature data change. The author’s approach can lead to miscarriage of justice mistakes.