What was found
EWR - ABORTED TAKEOFF - FLT 0688 - DURING TAKEOFF ROLL AT EWR EN ROUTE PHX ECAM INDICATED A VENT SKIN VALVE FAULT, WITH ASSOCIATED AVIONICS SYSTEM FAULT. REJECTED TAKEOFF AT 70 KTS. MAINTENANCE PERFORMED PROCEDURES FOR MEL 21-26-04, COND 1, EXTRACT VALVE INOPERATIVE. PARTS ORDERED. VENDOR BENCH TEST OF SKIN AIR VALVE WAS NO FAULT FOUND, UNIT WAS FUNCTIONAL TESTED AND RETURNED TO SERVICE.