Cal. Civ. Proc. Code § 222

(a) Except as provided in subdivision (b), when an action is called for trial by jury, the clerk shall randomly select the names of the jurors for voir dire, until the jury is selected or the panel is exhausted.

(b) When the jury commissioner has provided the court with a listing of the trial jury panel in random order, the court shall seat prospective jurors for voir dire in the order provided by the panel list.