793F and 797F Off-Highway Trucks Power Train Electronic Control System Caterpillar


Using Caterpillar Electronic Technician to Determine Diagnostic Codes

Usage:

793F D3T



图 1g02615483

通信适配器总成和 Cat 电子技师(Cat ET)的连接。 以下所列为使用通信适配器总成和 Cat ET 所需的部件:

(1) 最新版本的 Cat ET 软件

(2) 317-7484 通信适配器总成

(3) 维修诊断电缆

(4) 电缆

将 Cat 电子技师 (Cat ET) 连接到机器上。 将钥匙起动开关转到运转位置。 启动 Cat ET。 检查软件版本,确保您的电脑中加载了最新版本。 如果电脑中未加载 Cat ET 的最新版本,则下载该软件的最新版本。 Cat ET 会发起与机器上的电子控制模块的通信。 通信建立起来之后,Cat ET 会列出电子控制模块。 选择所需的电子控制模块。 使用 Cat ET 检测到诊断代码后,参考相应诊断代码的测试程序。

参考故障排除, "维修工具"

现行诊断代码




图 2g01954080

激活诊断代码的 Cat ET 屏幕

下述步骤可能会导致记录新的诊断代码。 因此,执行任何步骤之前,先列出所有激活的诊断代码,以确定系统有无故障。 完成各个步骤后,清除步骤所引起的诊断代码。

注: 执行步骤之前,一定要先检查所有断路器。 排除跳闸断路器跳闸的原因。

Cat ET 中提供了显示现行诊断代码的屏幕。 该屏幕显示所有现行诊断代码。 现行诊断信息包括部件识别符(CID)、故障模式识别符(FMI)和故障的文字描述。

记录的诊断代码




图 3g00859762

记录的诊断代码的典型 Cat ET 屏幕

Cat ET 中提供了显示记录的诊断代码的屏幕。 该屏幕显示所有记录的诊断代码。 Cat ET 会记录间歇性诊断代码。 记录的诊断数据包括部件识别符(CID)、故障模式识别符(FMI)和故障的文字描述。 此外,记录的诊断数据还包括故障出现的次数和两个时间标记。 一个时间标记显示故障第一次出现的时间,另一个时间标记显示故障最近一次出现的时间。

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

Caterpillar Information System:

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