The air intake system function is described in the schematic diagram below.
Schematic Diagram
| 1. | Air intake |
|---|---|
| 2. | Air cleaner assembly |
| 3. | Mass air flow meter and temperature sensor |
| 4. | Turbocharger |
| 5. | Breather valve 1) |
| 6. | Intercooler |
| 7. | Charge pressure sensor |
| 8. | Cooled exhaust gas to EGR valve |
| 9. | EGR valve |
| 10. | Air flap |
| 11. | To intake manifold 2) |
• Service: When an EGR valve has been replaced, the new EGR valve must be programmed using Tech 2.
1
) During idling, the valve remains open under internal spring pressure. Under load conditions, the valve closes by the vacuum created in the turbocharger intake hose.
2
) Cylinder No. 1 is located at the timing end of the engine.