793F and 797F Off-Highway Trucks Braking System Caterpillar


Using Caterpillar Electronic Technician to Determine Diagnostic Codes

Usage:

793F D3T
执行以下步骤以使用 Cat® 电子技师(Cat ET)维修工具来确定诊断代码:

  1. 将 Cat ET 连接到机器上。

  1. 将钥匙开关转到 RUN(运转)位置。

  1. 启动 Cat ET。

    Cat ET 将触发与机器 ECM 的通信。

    通信建立后,Cat ET 将列出 ECM。

  1. 选择预期 ECM。

  1. 查看诊断代码的列表。

  1. 执行诊断代码的故障诊断与排除。

    请参阅特定诊断代码的测试步骤。

现行诊断代码




图 1g00859671

激活诊断代码的典型 Cat ET 屏幕

纠正步骤可能会导致记录新的诊断代码。 执行所有步骤前,先列出所有现行诊断代码的列表。 排除导致诊断代码的故障后,清除诊断代码。

Cat ET 显示以下现行的诊断代码信息:

  • 部件识别符(CID)

  • 故障模式识别符(FMI)

  • 故障的文本说明

记录的诊断代码




图 2g00859762

记录的诊断代码的典型 Cat ET 屏幕

Cat ET 显示以下记录的诊断代码信息:

  • 部件识别符(CID)

  • 故障模式识别符(FMI)

  • 故障的文本说明

  • 故障出现的次数

  • 故障首次出现时的时间标记

  • 故障最近一次出现时的时间标记

Cat ET 记录连续性诊断代码和间歇性诊断代码。

注: 诊断信息记录在非易失性存储器中。 通电时,ECM 会清除过去机器运作 150 小时内未检测到的或未激活的所有诊断代码。

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