What was found
ISSUE WITH FMS, AUTOPILOT & FLT DIRECTOR. CLIMBING OUT OF SCL, IN VNAV/LNAV, RECEIVED A CLIMB VIA CLEARANCE FROM ATC. ACFT LEVELED OFF AT 9000 AT SEKSE, IAW DONTI5B SID OFF OF 17L. ACFT WENT INTO VNAV PATH AS ANTICIPATED. ONCE PAST SEKSE, ACFT WENT INTO TO VNAV CLB. SHORTLY, ACCELERATED TO BARBER POLE. VNAV PAGE SHOWED CRZ CLIMB, BELOW FL360. APPROACHING UIO, ON VECTORS IN HEADING SELECT, GIVEN DIRECT TO QIT. SELECTED DIRECT QIT & SELECTED LNAV. BANK WOULD NOT GO PAST 15 DEGREES FLYING THROUGH COURSE. WENT TO HEADING SELECT & AGAIN, WITH AUTOPILOT ENGAGED. IT WOULD NOT GO PAST 15 DEGREES, BANK LIMITER IN AUTO. TURNED OFF AUTOPILOT & FLEW TO GET ON COURSE. ONCE ESTABLISHED, REENGAGED AUTOPILOT IN LNAV/VNAV. THROUGHOUT APPROACH ON ILSZ 36, VNAV KEEPING ACFT HIGH EVEN THOUGH FLT DIRECTOR & PATH SHOWED ON PROFILE. R & R C FCC & TESTED NORMAL IAW AMM 22-11-01-4.