on my 2007 R1200R w/68,000 + miles i have the same brake failure problem. GS911 shows intermittent power to ABS pump. i am a bit Leary about removing and sending the pump to modules masters, not because of the quality of there work but because i have never bleed the brakes on a linked system before. so for now i am just riding it as is but i have positioned my GPS so it blocks my view of the warning light on the dash, thus making me think all is good
Not the issue the earlier R/RT's had with multi-point bleed whizzy brakes, the pump from '07 R's and up bleed at the calipers only. I replaced one about a year back and it went very smoothly. Mentioned in another thread about needing a long shank torx to remove the bracket and pump.
Is this the code you have seen? it was the brush issue and MM sent the unit back, bench tested and sealed. Installed, bled,rode. Light and fault gone,