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ELECTRICAL FUNDAMENTALS
| 题名： | ELECTRICAL FUNDAMENTALS |
| 正文语种： | eng |
| 作者： | CHRIS REYNOLDS |
| 作者单位： | ASE-Education Foundation evaluation team automotive technology at Lewis & Clark Community College in Godfrey Ⅲ University of Missouri - St. Louis |
| 摘要： | In my Introduction to Electricity and Electronics course, I was asked by a campus security employee to diagnose and repair an inoperative/compromised air conditioning system. The vehicle in question was a 2003 Hemi-equipped Dodge Ram (Figure 1). We were told that a small repair facility in the region was unable to diagnose the reason for the complaint but used less-than-correct manners to make an interim repair. Being hungry to share how the skills we've presented and practiced in class, and in lab are of immediate importance in application. I decided to accept the diagnosis as a learning point for my class.Sure enough, when the engine is running and the air conditioning is requested by the operator (with the request of HVAC fan speed, cool air, and a quick press of the "snowflake" on the A/C control head), the A/C compressor does not engage. This triggers a major red flag, as the HVAC module responds by illuminating the snowflake indicator on the dash, but the A/C still does not engage. |
| 出版年： | 2022 |
| 期刊名称： | Motor age |
| 卷： | 141 |
| 期： | 4 |
| 页码： | 64-66,68 |
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