As long as i understand, on todays modern jetliners the pilots just do the takeoff and land by hand, that's it, a few minutes hand flying per trip, the computers do the rest on a normal flight. But they are responsible for all the programming and manage any unexpected situation due to failures or flight plan changes (weather, traffic, etc). As others mentioned, as per your FMC, you should be at 3000 feet while intercepting the ILS. Could you please screen capture -NAV RAD- FMC display while there? ILS should be configured there in PARK mode and change automatically to active. Maybe the whole front panel screen capture will be great as well to understand your aircraft configuration and screens information while you are on top PISAS Also watch your speed, the aircraft will not be able to stabilize properly on the ILS if you are coming too hot, you are changing heading 076 to 229 PISAS to OM23