773E, 773F, 775F, 777E, and 777F Off-Highway Truck Chassis Electronic Control System Caterpillar


MID 087 - CID 0533 - FMI 14

Usage:

773E DJS
产生此代码的情况:


图 1g01263505

数据链路示意图

当制动器 ECM 不以正确的速率向底盘 ECM 发送必要的参数时,记录此诊断代码。 制动器 ECM 生成参数的更新率不正确。 通信故障可能是由接头断开或导线线束故障引起。

产生此诊断代码的可能原因如下:

  • 制动器 ECM 安装了不正确的软件。

  • 底盘 ECM 安装了不正确的软件。

  • 可能安装了不兼容的软件。

  • 制动器 ECM 的保险丝可能已经熔断。

系统响应:

机器响应如下所示:

  • 一些机具功能可能无法正常工作。

测试步骤 1. 检查制动器 ECM 和底盘 ECM 有无正确的软件版本。

  1. 利用 Caterpillar 电子技师(ET)验证软件版本是否兼容。

预期结果:

制动器 ECM 和底盘 ECM 上安装了软件的正确版本。

结果:

  • 是 - 软件版本兼容。 转至测试步骤 2。

  • 否 - 未安装正确的软件。

    修复: 闪存相应 ECM 的合适软件。 循环钥匙开关以初始化新软件。 确保诊断代码不再为激活状态。

    停止

测试步骤 2. 重新检查是否有诊断代码。

  1. 确保 CID 0590 FMI 14 为激活状态。

预期结果:

诊断代码处于非激活状态。 诊断代码指示灯处于非激活状态。

结果:

  • 是 - 诊断代码指示灯和诊断代码都处于非激活状态。

    修复: 清除诊断代码。

    停止

  • 否 - 诊断代码处于激活状态。

    修复: 请在更换 ECM 之前确保安装了正确的软件。 如果软件正确,则更换底盘 ECM。 请参考测试和调整, "电子控制模块 (ECM) - 更换"。 如果刚更换了底盘 ECM,则安装新的制动器 ECM。 请参考测试和调整, "电子控制模块 (ECM) - 更换"。

    停止

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