Power Supply Circuit of Electronic Control Module
系统运作描述:
电路超载会导致保险丝熔断。 例如，蓄电池正极接线对接地短路。 如果 ECM 电源电路上的保险丝熔断，将不会记录任何诊断代码。 熔断的保险丝将导致记录 MID 027 的 CID 0248 FMI 09。
测试步骤 1. 检查保险丝
当机器的电子部件无法工作且诊断代码不可用时，应检查该部件相应的保险丝，并检查所有相关的断路器。
- 检查所有保险丝和断路器。
预期结果:
所有保险丝和断路器应正常。
结果:
- 是 - 所有保险丝和断路器应正常。 先退出本步骤，然后重新进行一次。停止
- 否 - 所有保险丝和断路器都不正确。
修复: 更换熔断的保险丝或使断路器复位。
停止
Caterpillar Information System:
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