Checking Fuses, Relays, Pressostat And Cable Harness
WARNING: This page is about a different car, the 2004 Volvo S40, 2003 Volvo S40, 2002 Volvo S40, 2001 Volvo S40, and 2000 Volvo S40. However, it is still accessible from the selected car via links, so may be relevant.
See Service Bulletin 3-39-4004 Wiring diagram, electric auxiliary pump.
After repair, recheck the function of the electric auxiliary pump.
- Reconnect the vacuum hose to the T-valve. See Connecting the Vacuum Hose To the T-Valve