

| Item | Description | 
| 1 | Turbo boost pressure controller | 
| 2 | from exhaust manifold | 
| 3 | Pilot pressure | 
| 4 | Wastegate control valve Refer to Component Description: (page 7) Comments: closed when de-energised | 
| 5 | PWM (pulse width modulation) signal Comments: from PCM (powertrain control module) | 
| 6 | Atmospheric pressure | 
| 7 | Turbocharger boost pressure. | 
| 8 | from air filter | 
| 9 | Intake air | 
| 10 | Recirculated air valve Refer to Component Description | 
| 11 | Vacuum line, recirculated air valve | 
| 12 | to intake manifold | 
| 13 | Throttle plate | 
| 14 | Compressor | 
| 15 | Turbine |