Klaus,
I checked out the link you provided. I noticed he bled the shortest line first and longest last. This is exactly opposite from how I was taught long ago prior to ABS. Do you think it matters? I don't but I sure don't know as much as a lot of other members here. I also noted he was using a 2 man operation (at least it sounded like it). One person to push the pedel and the other to open the bleed nipple. I was also taught to close the nipple at the bottom of the brake stroke, and then allow the assistant to raise the brake pedel. Lately I've been using a mighty vac on my other cars, but I've never done the breaks on my 2001 V70 T5 other than change pads and rotors. I let the dealer do it at the regular service last time. Can you use a vacum to make it a one person operation on Volvo ABS systems? My P1800 also had 2 bleed nipples per caliper if I'm remembering correctly and there was a recommended order that was different than I'd ever done before. Do the newer Volvo's have this or a single one?

Long Gone, great work in solving this!!!

Checksix