| 摘要 |
<P>PROBLEM TO BE SOLVED: To easily check a driving state of an engine, in a working vehicle such as a tractor. Ž<P>SOLUTION: A working machine controller performs interruption diagnostic processing for checking a driving state of a diesel engine at its time at a proper time interval when performing an ordinary mode of performing travel on a rod and various works, and displays information for urging an engine diagnosis on a liquid crystal monitor, when detecting an attention range Am2 (or Am2') in an fuel injection diagnostic map MP by a preset warning frequency Walm in the interruption diagnostic processing. The warning frequency Walm is changeably set so as to reduce when a cumulative injection quantity Qacc of a common rail type fuel injection device increases. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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