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STREAMLINING ELECTRONIC DIAGNOSIS
| 题名： | STREAMLINING ELECTRONIC DIAGNOSIS |
| 正文语种： | eng |
| 作者： | ROY DENNIS RIPPLE |
| 作者单位： | shop foreman at a Ford dealership |
| 摘要： | Electronics use devices to manipulate the flow of electricity. Most of the actions performed by today's vehicles are commanded by an Electronic Control Module (ECM) using inputs from numerous sensors and switches. An ECM is only as dependable as the information it receives. When an ECM makes a bad call, it's generally because the module received wrong information from an input or attempted to command a faulty output. In some cases, an ECM will recognize an erroneous input and report it to the user in the form of a malfunction indicator lamp and a Diagnostic Trouble Code (DTC). Other times it will believe the inaccurate input and continue to output invalid commands.This article will offer tips and pointers that will be helpful when diagnosing an ECM-controlled system. This isn't about the inner workings of transistors, diodes, and thermistors. There will be no in-depth discussion about the movement of electrons between atoms, nor will we dive into electrical theory formulas. The purpose of this column is to help you diagnose the vehicle that's sitting in your shop. It's always crucial that theory, description, and operation are studied and understood for the system you're servicing before the onset of diagnosis. |
| 出版年： | 2022 |
| 期刊名称： | Motor age |
| 卷： | 141 |
| 期： | 2 |
| 页码： | 54,56,58,60-61 |
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