Hello from BC BigGuyMDU,
just got mine back from the shop with the same diagnosis, 'replace ABS actuator and electric unit' , estimate $1900 +tax. When I asked if they were confident that was the issue the answer I got was ' we think so'. Ugh.
I'm going to spend a bit of time looking over wiring to make sure I don't have an issue there but likely going to do this repair myself.
How did you make out?