Measure the Basic Boost Pressure
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.
Remove the turbo control valve wiring connector and carry out the same test drive as when measuring boost pressure, see Measure the Boost Pressure .
NOTE:
These values are the basic values in "limp home" mode.
If no repairs are required then continue with Remove the Special Tool