Turbocharger Solenoid Valve
Disconnect small air tube from air hose. Disconnect solenoid valve connector. See Fig 1 . Blow through air tube and verify air does not flow. If air does flow, replace solenoid valve and turbocharger as an assembly. Apply 12 volts and ground to solenoid valve connector. Blow through air tube and verify air does pass. If air does not pass with 12 volts applied, replace solenoid valve and turbocharger as an assembly.