What was found
NR 2 BLEED AIR SYS IN AUTO. NR 1 AND 2 PACKS CYCLE ON & OFF WITH CONTROLLER IN AUTO. IAW FIM 36-11-01, FIG 103, NO CURRENT FAULTS OR FAULTS LAST FLIGHT LEG IN PSC 1, PSC 2 OR ESC, NO SENSORS IN SENSOR READOUT X'ED OUT IN EITHER PSC. RAN NR 2 ENGINE PER JRH. OPERATED NR 2 BLEED & RAN PACKS, NR 2 BLEED CHECKED NORMAL AT IDLE. READINGS IN PSC 1 AS FOLLOWS PI2, 22 PSI, PE2, 20 PSI, PM, 18 PSI. PERFORMED A FAULT REVIEW OF PSC 2. THE PRESS REGULATOR PILOT VALVE WAS FAULTED ON THREE DIFFERENT LEGS. R & R NR 2 PRV PILOT VALVE PER MM36-12-20-4.