Power Supply Circuit of Electronic Control Module
系统运作描述:
电路过载导致保险丝被烧断或电路断路器跳闸。 例如，蓄电池正极接线接地短路。 如果 ECM 电源电路的保险丝被烧断或电路断路器跳闸，将不会记录诊断代码。 产生故障的电源电路会导致针对 MID 027 模块记录诊断代码 CID 0248 FMI 09。
测试步骤 1. 检查保险丝/电路断路器
只要机器的电子零部件失灵且没有提供诊断代码，即检查该零部件对应的保险丝/电路断路器。
- 检查所有保险丝和电路断路器。
预期结果:
所有保险丝和电路断路器均正常。
结果:
- 是 - 所有保险丝和电路断路器均正常。 退出并重新执行本测试步骤。停止
- 否 - 并非所有的保险丝和电路断路器都正常。
修复: 更换熔断的保险丝或使电路断路器复位。
停止
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