Passat L4-1.8L Turbo (AWM) (2004)
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For diagnostic pump
18
Charge Air Pressure Sensor -G31-*
19
Charge air cooler
20
Throttle valve control module
21
Intake manifold
22
Recirculating valve for turbocharger -N249-
23
Vacuum diaphragm
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For boost pressure regulator valve
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Part of turbocharger, cannot be replaced
24
Wastegate Bypass Regulator Valve -N75-*
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Valve is activated (pulsed) by the Engine Control Module (ECM)
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Closed when no voltage present, limits charge pressure
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Check activation
25
Deceleration shut-off valve
26
Pressure regulator valve
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For crankcase ventilation
27
Secondary Air Injection (AIR) Pump Motor -V101-*
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Checking function
28
Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-*.