What was found
PIT - FLT 358 - ON CLIMB-OUT, THE ACFT WOULD NOT PRESSURIZE IN EITHER THE AUTO OR MANUAL MODE. CREW DECIDED TO DIVERT TO PIT. MAINTENANCE INSPECTED THE OUTFLOW VALVE, ALL DUCTING, DOORS, AND FRAMES. NO ABNORMALITIES WERE FOUND. THE ACFT WAS PRESSURIZED TO 7.5 PSI. OPERATIONS CHECKED GOOD. (W)