9-5 Aero Wagon (9600) L4-23L Turbo (B235) HO (2001) Compression Check TSB
4.
Only petrol engines: Connect the pressure/vacuum pump as well as a boost pressure gauge, in accordance with the illustration, to the wastegate
unit and create an overpressure/vacuum in order to check that there is no leakage in the unit. In addition, check that the lever is moving.
In the event of leakage: replace the wastegate unit.