9-5 Wagon (9600) L4-2.3L Turbo (B235) (1999)
4
Check the reading at barometric pressure. The reading should be 3 bar (43 psi).
5
Increase the negative pressure in the pressure regulator by means of the pressure/vacuum pump. System pressure should drop by the same amount
as indicated on the pressure gauge.
6
Pump up the pressure in the pressure regulator with the vacuum pump. System pressure should now increase by the same amount as indicated on
the pressure gauge.