We've received no ASC bulletins that indicate the PS/3 electronics has been upgraded and these jumpers are changed. I'd be a bit surprised if they have changed them already.
Doubly so since the MTH website says these PS3 engines were delivered July 2013 so his SW-1500 has been out there 1 year.
I hooked up a Z4000 to a PS2-3V board doing nothing. With 16V on the track the Z4000 reads 0.1 Amps just as GRJ says.
Then I put a DCC power booster between the Z4000 and the track. The Z4000 reads 1.7 Amps with the same PS2-3V board still doing nothing.
"In a world that operates largely at random, coincidences are to be expected, but any one of them must always be mistrusted." Nero Wolfe (fictional detective)