MID 124 - CID 0817 - FMI 04
产生此代码的情况:
当备用蓄电池的电压在 1.5 DCV 和 1.7 DCV 之间时，记录此诊断代码。 此诊断代码可导致以下情况出现：
- 保存的数据丢失
- 实时时钟丢失
测试步骤 1. 确认诊断代码。
- 将断路开关转到 ON 位置。
- 将 ET 连接到 ECM 后清除故障代码。
- 确定是否存在 CID 0817 FMI 12。
预期结果:
存在 CID 0817 FMI 12。
结果:
- 是 - 存在诊断代码。 MSS ECM 的内部蓄电池低电压。
修复: MSS ECM 内的蓄电池无法更换。 必须更换整个 ECM。 请参阅测试和调整部分, "电子控制模块（ECM）- 更换"。
停止
- 否 - 该编码不再存在。 MSS ECM 的内部蓄电池不再低电压。停止
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