What was found
FAULT LIGHT ILLUMINATED ON CABIN ALTITUDE CONTROL PANEL. AFTER CONDUCTING CHECK LIST, LIGHT EXTINGUISHED. DIVERTED AND ACCOMPLISHED UNEVENTFUL LANDING. COMPLIED WITH FIM TASK 21-30-00-810-802. CDS SHOWS FAULTS; AFT OUTFLOW VALVE FAIL AND CPC/OF VALVE DATA FAIL ON CPCS PAGE. FAULTS CLEARED. COMPLIED WITH FUNCTIONAL TEST OF THE PRESSURIZATION CONTROL IAW AMM TASK 21-31-00-720-801. TESTED GOOD. OUTFLOW VALVE CHECKED GOOD IN MANUAL MODE. INSPECTED MAIN CABIN DOOR SEAL DURING PRESSURIZATION, NO LEAKS NOTED. ACFT OK FOR CONTINUED SERVICE.