I made another A320 flight today using SID/STAR/APP for KSAN-KSFO.
1. The AP followed the Lateral Nav very well. AP was turned on at +500 ft to see if it would capture the very close to airport SID waypoint.
Altitude was maintained at FL320 and speed was at expected value.
2. The AP failed to follow a sufficient descent to IF CEPIN and as such the aircraft was too high to capture the GS.
3. After ILS was alive on the MCDU I could then see both the Freq and Course on RAD/Nav page.
4. Using HDG a go-around was completed and a final at CEPIN resulted in ILS/GS capture.
Aircraft near CEPIN waypoint (too high) should be about 2000ft