S80 T6 L6-2.9L Turbo VIN 91 B6294T (2002)
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: Brake Hose/Line/Service and Repair/Brake Pipe Master Cylinder / ABS Unit, Replacing