To be fair, I'm not sure which positions select the different coils.
I can't find a manual online, maybe I can email Yamaha about it.
The sound does change though, increasingly noticable compared to a series/parallel switch you'd think it be.
I have one in blue.
The back of the headstock does say Made in Taiwan.
As far as I know the pickup has three split coils and the fiveway selector gives you options between these coils.
Good bass, the frets are a bit worn but it's my Precision bass of choice.