DIR to RNAV point directs a 90 degree turn when the waypoint is straight ahead?

[Lauramks2]

I was setting up for the RNAV Y Rwy 20R at KSNA (John Wayne).  As I got close I went used the DIR button to HUKEM (a point on the approach) which was basically straight ahead of me. The PFD showed the magenta line on a heading of 197 (the final approach course) but Hukem was straight ahead of me. I flipped it into heading mode based on the MFD plan view and waited until I got close before manually turning to final and then engaging the autopilot. Attached is a screenshot of the aircraft about 5 miles prior to final intercept. For some reason I have the hardest time with the approaches to KSNA. Is this because HUKEM is not an IAF? 

I fly into KPSP all the time and intercept at a midpoint on the approach. It seems to work in other areas. 

 

This is the only airport where the FMS goes bonkers. I flew the ILS Rwy 20R yesterday and when I intercepted final at SNAKE it started into a right 360. Since I wasn't on Pilotedge, I waited to see what it would do and it just kept flying in circles until I manually intercepted final and stepped to the then waypoint HUKEM. 

[Pils]

On 5/4/2025 at 10:26 PM, Lauramks2 said:

As I got close I went used the DIR button to HUKEM (a point on the approach) which was basically straight ahead of me.

What was your flight plan at the time? Looks like it was at least FRETS?

On 5/4/2025 at 10:26 PM, Lauramks2 said:

I flew the ILS Rwy 20R yesterday and when I intercepted final at SNAKE it started into a right 360.

This sounds like a false localizer capture, were you intercepting the approach course from an angle larger than 30 degrees?