XC90 AWD L6-2.9L Turbo VIN 91 B6294T (2004)
There are 4 more balls in the control system housing. The balls will fall out when the valve housing is removed. Collect the balls in a clean container (the
balls will be reinstalled later). There are 2 balls which do not fall out when the valve housing is removed (these are in the control system, C1 and C2).
Removing the screws for the valve housing and pressure sensor