E255 Diagnostic Reset
产生此代码的情况:
电子控制模块(ECM)可检测以下状况:
- 运转 / 停机开关位于 STOP(停机)位置。
- 发动机不在运转。
- 导致出现诊断代码或事件代码的状况已经不再存在。
- ECM 检测到 ECM 的诊断复位输入上对接地短路。
系统响应:
ECM 会在不对 ECM 断电的情况下清除所有处于锁定状态的诊断代码和事件代码。
如果发动机减额为激活状态但对应代码已不再存在,减额将会取消。
测试步骤 1. 确认 "Diagnostic Reset"(诊断复位)开关按下
- 确保发动机不在运转。
- 确认运转 / 停机开关位于 STOP(停机)位置。
- 确认 "Diagnostic Reset"(诊断复位)开关按下。
预期结果:
"Diagnostic Reset"(诊断复位)开关按下。
结果:
- 正常 - "Diagnostic Reset"(诊断复位)开关按下。
修复: ECM 已经清除了所有处于锁定状态的诊断代码和事件代码。
停止
- 不正常 - "Diagnostic Reset"(诊断复位)开关未按下。
修复: 请参阅诊断功能测试故障诊断与排除, "开关电路 - 测试"以便确定 ECM 的诊断复位输入给出错误信号的原因。
停止
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