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TESTING THE ECM: READ THIS BEFORE YOU ORDER A REPLACEMENT
| 题名： | TESTING THE ECM: READ THIS BEFORE YOU ORDER A REPLACEMENT |
| 正文语种： | eng |
| 作者： | PETE MEIER |
| 作者单位： | Endeavor Business Media |
| 摘要： | Ever use an OEM flow chart as part of your drive-ability diagnostic process? I'm betting you have. And when the next step tells you to replace the engine control module, there is always some hesitation, isn't there? After all, a new ECM can cost a lot of money and you want to be sure that replacing it is going to resolve your customer's concern. what does the ECM do, and how does it do it? The engine control module (ECM) is the computer that manages every system on the vehicle related to emissions. When something goes wrong, the ECM will hopefully record a diagnostic trouble code and turn on the check engine light. But the ECM all by itself can do nothing. It first must be programmed. These are the instructions the engineers have given it so it can perform its primary function - maintain the vehicle's emissions levels. |
| 出版年： | 2022 |
| 期刊名称： | Motor age |
| 卷： | 141 |
| 期： | 8 |
| 页码： | 45-47 |
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