MID 079 - CID 0418 - FMI 06
产生此代码的情况:
当 ECM 检测到接地故障时,指示该故障。 如果存在该故障,没有迹象表明主转向的失效。 没有迹象表明辅助转向系统内存在故障。 接头触点 34 与该故障相关。
注: 以下步骤可能会产生其他指示故障。 排除原始故障后,清除这些故障。
测试步骤 1. 检查继电器。
- 将起动开关转到断开位置。
- 检查有无烧毁的继电器。
预期结果:
继电器未烧毁。
结果:
- 否 -
修复: 更换继电器。
停止
- 是 - 继电器看来正常。 测量继电器线圈的电阻。 转至测试步骤 2。
测试步骤 2. 检查线束电路
- 清理继电器端子。
- 清理插座。
- 安装继电器。
- 从控制装置上断开线束接头。
- 测量触点 34 和触点 39 之间的电阻。
预期结果:
电阻应与步骤 1 中的测量值相等。
结果:
- 否 - 电阻小于 5 欧姆。 存在短路。
修复: 修理或更换线束。
停止
- 是 - 电阻等于步骤 1 中的测量值。 转至步骤 3。
测试步骤 3. 检查是否仍存在故障
- 检查接头。 重新连接接头。
- 将钥匙起动开关转到接通位置。
- 进入维修模式。
- 操作机器。
- 检查原始故障是否为激活状态。
预期结果:
该故障未激活。
结果:
- 否 - 该故障没有排除。
修复: 执行之前的步骤。 如果没有找到故障原因,则更换控制装置。
停止
- 是 - 该故障已排除。 故障可能是电气连接不良的结果。 使机器恢复正常运转。停止
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