In County of Ventura v. Tillett (1982) 133 Cal.App.3d 105, the defendant brought a motion to vacate the judgment on the ground it violated his constitutional rights. The court's analysis bears quotation at length because it is both cogent and apposite: Defendant's "motion was based on the contention that the judgment is constitutionally invalid. Since a court of this state does not have jurisdiction to render a judgment that violates the California Constitution or the Constitution of the United States, the defendant's argument is, essentially, that the superior court's judgment was in excess of jurisdiction. A judgment is void on its face if the court which rendered the judgment lacked personal or subject matter jurisdiction or exceeded its jurisdiction in granting relief which the court had no power to grant. If the judgment is void, it is subject to collateral attack. One method of such an attack is a subsequent motion to vacate or set aside the judgment as void. That motion may be filed at any time after judgment." ( Id. at p. 110.)