The outline of the Scrutiny is simple:
LITURGY OF THE WORD
Invitation to Silent Prayer
Intercessions for the Elect
Dismissal of the Elect
The rubrics on “Readings”
150. The texts and the readings for Mass are always those given for the first scrutiny in the Missal and the Lectionary for Mass among the ritual Masses, “Christian Initiation: The Scrutinies.”
It would seem that liturgists and pastors who prefer cycle B or C readings would be moving contrary to the rubrics here.
The rubrics on “Homily,” which gives the preacher a solid direction on how to handle the rite:
151. After the readings and guided by them, the celebrant explains in the homily the meaning of the first scrutiny in the light of the Lenten liturgy and of the spiritual journey of the elect.