Leon Mk2
| Schematic diagram of turbocharging system: engine code AWC |
| 1 - | Activated charcoal filter |
| 2 - | Activated charcoal filter solenoid valve 1 -N80- |
| q | When engine is warm, valve will be actuated (pulsed) by engine control unit. |
| q | Checking → Chapter. |
| q | Checking activation: → Rep. Gr.01. |
| 3 - | Breather line |
| q | From pressure retention valve on fuel tank → Item. |
| 4 - | Pressure regulating valve |
| q | For crankcase breather |
| 5 - | Non-return valve |
| q | For activated charcoal filter system |
| q | Grey connection points to junction. |
| 6 - | Overrun shut-off valve |
| 7 - | Turbocharger |
| q | The charge pressure regulating valve and charge pressure regulating valve pressure actuator are integral parts of turbocharger and cannot be individually replaced. |
| 8 - | Charge pressure control solenoid valve -N75- |
| q | Vacuum hoses on solenoid valve → Fig.. |
| q | When engine is warm, valve will be actuated (pulsed) by engine control unit. |
| q | Checking → Chapter. |
| q | Checking activation: → Rep. Gr.01. |
| 9 - | Pressure actuator |
| q | For charge pressure control valve. |
| q | Integral part of turbocharger and cannot be replaced. |
| 10 - | Exhaust gas recirculation valve -N18- with exhaust gas recirculation potentiometer -G212- |
| q | Checking exhaust gas recirculation potentiometer -G212- → Chapter. |
| q | Checking exhaust gas recirculation valve -N18- → Rep. Gr.01. |
| 11 - | Cylinder head |
| 12 - | Throttle valve module -J338- |
| 13 - | Charge air pressure sender -G31- |
| q | Checking → Chapter. |
| 14 - | Charge air cooler |
| 15 - | T-piece |
| q | With non-return valve. |
| 16 - | Crankcase breather |
| 17 - | Fuel pressure regulator |
| 18 - | Intake manifold |
| 19 - | Air mass meter -G70- |
| 20 - | Air filter housing |
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