ABNORMALITY DIAGNOSIS DEVICE

PROBLEM TO BE SOLVED: To suppress a wrong determination about a state of an acceleration sensor.SOLUTION: When a size of a difference between an acceleration estimation value and an acceleration actual measurement value is equal to or less than a threshold A (YES in S100), or the size of the difference between the acceleration estimation value and the acceleration actual measurement value is not equal to or less than the threshold A (NO in S100), and the number of switch times of an output value of a level sensor during a period of abnormality diagnosis is equal to or less than a threshold B (YES in S104), a control device is configured to execute control processing including: a step (S102) of diagnosing that a G sensor is in a normal state; and a step (S106) of, when the size of the difference between the acceleration estimation value and the acceleration actual measurement value is not equal to or less than the threshold A (NO in S100), and the number of switch times of the output value of the level sensor during the period of the abnormality diagnosis is equal to or greater than the threshold B (NO in S104), diagnosing that the G sensor is in an abnormal state.SELECTED DRAWING: Figure 6 【課題】加速度センサの状態について誤判定することを抑制する。【解決手段】制御装置は、加速度の推定値と加速度の実測値との差の大きさがしきい値Ａ以下である場合（Ｓ１００にてＹＥＳ）、または、加速度の推定値と加速度の実測値との差の大きさがしきい値Ａ以下でなく（Ｓ１００にてＮＯ）、異常診断期間でのレベルセンサの出力値の切り替わり回数がしきい値Ｂ以下である場合（Ｓ１０４にてＹＥＳ）、Ｇセンサが正常状態であると診断するステップ（Ｓ１０２）と、加速度の推定値と加速度の実測値との差の大きさがしきい値Ａ以下でなく（Ｓ１００にてＮＯ）、異常診断期間でのレベルセンサの出力値の切り替わり回数がしきい値Ｂよりも大きい場合（Ｓ１０４にてＮＯ）、Ｇセンサが異常状態であると診断するステップ（Ｓ１０６）とを含む、制御処理を実行する。【選択図】図６