What was found
IR 2 FAULT DISPLAYED ON UPPER ECAM SCREEN. NAV CONFIRMED IR 2 AT FAULT BY SWAPPING PROBLEM FOLLOWS, INSTALLED INTO ORIGINAL NR 2 POS. ACFT DOWNGRADED TO AUTOLAND LIMIT, CAT II. PLACARD CAT II INSTALLED. IR 2 NAV MODE INOP. ACFT OK TO CONTINUE.