Dennis, I can't answer that question. I do not know that any solenoid operates during that brief run period. It may just be that the PCM is testing the electrical connections or checking for cutoff pressure. I do not know if any air is purged when that ABS pump operates during the DRB III testing.
You may have seen on youtube videos where the brake pedal actual moves up and down as the brake system is bled with the cars computer. That will not happen on the Crossfire as no such programming is incorporated into the systems. I know at Mercedes dealers they have a high dollar machine that applies pressure at the reservoir.