Overview Plan of Exhaust Turbocharging System

Overview plan of exhaust turbocharging system (Vehicles with engine code AUG, AWM)







1 EVAP canister
2 Vent line
- From gravity valve at fuel tank, item 7
3 Check-valve
- For EVAP canister system
4 Turbocharger
- The boost pressure regulator valve and vacuum diaphragm for boost pressure regulator valve are part of the exhaust turbocharger and cannot be replaced individually.
5 Combination valve
- For Secondary Air Injection (AIR) system.
6 Fuel pressure regulator
7 To cylinder head cover
- Crankcase breather valve
8 To brake booster
9 Suction jet pump
10 Vacuum reservoir
- Two separate chambers
11 To diagnostic pump
12 Check-valve
- Bypass to vacuum booster
13 Check-valve
- For engine vacuum control
14 Crankcase ventilation
15 Secondary Air Injection (AIR) Solenoid Valve-N112-
16 Check-valve
- For EVAP canister system
17 Check-valve
- 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
- For boost pressure regulator valve
- Part of turbocharger, cannot be replaced
24 Wastegate Bypass Regulator Valve -N75-*
- Valve is activated (pulsed) by the Engine Control Module (ECM)
- Closed when no voltage present, limits charge pressure
- Check activation.
25 Deceleration shut-off valve
26 Pressure regulator valve
- For crankcase ventilation
27 Secondary Air Injection (AIR) Pump Motor -V101-*
- Checking function.
28 Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-*.