I finally got consistent readings using a piece of 26 gauge wire to get into the back of the connector.Will try again this evening
Ignition on, plugged in, across pin 25:
6 (Green) : 4.82 V;
7 (Blue): 2.48 V;
8 (White): 2.48 V
Unplugged, readings were 0.0 V across pin 25, but I could get around 0.02 V from 6, 7, or 8 to ground.
The Connector View in the manual shows the Green Pin 8 as from the W phase, and that's the one that's different. What does that say to you ?