What was found
ON SHORT FINAL, WITH 3 GREEN ON SYS 1, RECEIVED A TOO LOW MLG AT 300 FT. SWITCHED TO SYS 2, SAME WARNING. GO AROUND. NO ECAM, NO QRH RELIEF. EMERGENCY DECLARED. NLG OVRHD PANEL IND INTERMIT. SWITCHED DET SYS, NO HELP. PERFORMED EGPWS LEVEL 1 & 2 SELF TEST. ONLY FAULT FOR NR 2 RADIO ALTIM, C/B PULLED. ALL OTHER TESTS PASSED IAW AMM 34-48-01-05. CORRECT DATABASE VERS 631 & SOFTWARE INSTALLED. TS IAW TSM 32-61-00, SHT 7. R & R RELAY 99GB IAW ESPM 20-46-50. R & R NLG SWITCH 79GB , OPS CHECKED GOOD IAW AMM 32-00-00-04.