Symptom Troubleshooting
发动机的某些故障现象可能与电子控制系统无关。 收集描述故障现象的抱怨信息。 确认抱怨不是由发动机正常运转引起的。
执行以下步骤来确定故障。
- 修理所有激活的诊断代码。
- 收集操作员信息。
- 确认抱怨不是由发动机正常运转引起的。
- 对发动机执行目视检查。 检查下列各项：
- 导线
- 接头
- 燃油油位
- 燃油供给
- 发动机机油油位
- 发动机机油供给
- 冷却液液位
- 进气系统
- 排气系统
- 导线
- 检查配线和接头有无以下问题：
- 损坏
- 磨蚀
- 腐蚀
- 安装不正确
- 损坏
- 检查有无记录的诊断代码。
- 确定记录的诊断代码是否与可能原因相关。
- 确定记录的诊断代码是否与故障现象同时出现。
- 确定记录的诊断代码是否被重复记录。
- 确定记录的诊断代码是否与可能原因相关。
如果这些检查不能揭示问题，则应使用最能描述故障现象的程序。
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