9-5 (9600) L4-2.3L Turbo (2007)
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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 pressure in the pressure regulator with the vacuum pump. The system pressure should now rise by the same amount indicated on the
pressure gauge. Disconnect the tool and reconnect the vacuum hose.
