Problem to be solved: to provide a function for diagnosing a function arbitrarily selected by an inspection person or an examiner, and to provide an operation function diagnosis device capable of simply connecting to a control system of each working vehicle.The work traveling function diagnostic apparatus includes a diagnostic command management unit 69 for designating a diagnostic command to a control system of a working vehicle based on a user operation, a diagnostic command output unit 65 for outputting a diagnostic command designated by the diagnostic command management unit 69, and a response de showing the response result of the working vehicle based on the diagnostic command On the basis of the controller, the command response judging unit 66 for judging whether the response to the diagnostic command is normal or the diagnostic command output by the diagnostic command output unit 65 is sent to the control system via the on-board LANAn input \/ output processing section 61 for capturing response data from an in vehicle LAN and an automatic travel support module for executing a part of the work traveling function during automatic running of the working vehicle.Diagram【課題】点検者や検査者によって任意に選択された機能の診断が可能であるとともに、各作業車の制御系に簡単に接続できる作業走行機能診断装置の提供。【解決手段】作業走行機能診断装置は、作業車の制御系に与える診断指令をユーザ操作に基づいて指定する診断指令管理部69と、診断指令管理部69で指定された診断指令を出力する診断指令出力部65と、診断指令に基づく作業車の応答結果を示す応答データに基づいて、診断指令に対する応答が正常か否かを判定する指令応答判定部66と、診断指令出力部65によって出力された診断指令を、車載LANを介して制御系に送り込むとともに、応答データを車載LANから取り込む入出力処理部61と、作業車の自動走行の際に、作業走行機能の一部を実行する自動走行支援モジュールを備える。【選択図】図3
