发动机故障警示灯常亮的分析与解决

某车型在开发新的ABS控制模块时,因在设计初期对整车电气模块之间的匹配验证不充分,在批量装车后经动态路试检测,当点火开关置于ON挡时,仪表上发动机故障指示灯（EPC）常亮报警。文章主要是针对该故障现象,通过对整车的电气控制原理进行系统调查分析,从而得出该故障的具体产生原因,并根据具体原因对改进方案进行效果验证分析,制定出最终的改进方案。

Analysis and Solution of Engine Fault Alarm Light Stays on

During the development of a new ABS control module in a vehicle, the inadequate verification of the electrical module match in the initial stage of the design, after the batch assembly by the dynamic road test, the engine fault alarm light always stays on when the ignition switch is in ON. Aimed on this symptom, by investigating and analyzing the electrical control principle of complete vehicle, the specific cause of the failure is gained. And according to the specific reasons the improved solutions is veri...