XC90 FWD L6-3.2L VIN 98 B6324S (2007)

Close the cock on the pressure line. Open a nipple and close it again.
Checking for air in the brake system and for brake fluid leakage
See Brake pipe master cylinder / ABS unit, replacing See: Brakes and Traction Control/Hydraulic System/Brake Hose/Line/Service and Repair/Brake
Pipe Master Cylinder/ABS Unit, Replacing.