What was found
LGCIU 2 FAULT DISPLAYED ON UPPER ECAM SCREEN. CYCLED CB LGCIU SYS 2 IAW FM RESET PROCEDURE, ECAM STILL DISPLAYED. REPLACED SW 23GA IAW AMM 32-31-73 ALL MESSAGES CLEARED, AC RETURNED TO NORMAL. ECRA 3231-01117 CREATED FOR FERRY FLT TO MAINT BAS FOR GEAR EXTENSION CHECK.