What was found
AUTO FAIL LIGHT ILLUMINATED ON PRESSURIZATION PANEL. ACFT GROUNDED. ACCOMPLISHED FIM 21-31, TASK 827 AUTO FAIL LIGHT ON. NR 2 CPC FAULTED ON GROUND, CABIN PRESSURE CONTROL MODULE NR 1 NO FAULTS. SWITCHED TO MANUAL THEN BACK TO AUTO, FAIL LIGHT EXTINGUISHED. PERFORMED DCPC BITE AND TEST REF FIM 21-31, TASK 803, NO EXISTING FAULTS AND OPS CHECKED NORMAL. CABIN PRESS CONTROL MODULE FAULT CLEARED NR 2 CPC.