Secondary Turbocharger - Vehicles With Twin Turbocharger Only
| ITEM | DESCRIPTION |
|---|---|
| 1 | Vacuum connection |
| 2 | Electrical connector - Turbine intake shut-off valve position sensor |
| 3 | Turbine housing |
| 4 | Oil return connection |
| 5 | Turbine intake shut-off valve |
| 6 | Exhaust intake |
| 7 | Oil feed connection |
| 8 | Seal pressurizing air pipe |
| 9 | Charge air outlet |
| 10 | Clean air intake |
| 11 | Compressor housing |
| 12 | Exhaust outlet |
The secondary turbocharger is attached to the right exhaust manifold and is secured to three studs on a flange on the manifold with nuts.
Attached to the rear of the turbocharger is a turbine intake shut-off valve operated by a vacuum actuator. The Powertrain Control Module (PCM) operates the turbine intake shut-off valve solenoid to apply and release the vacuum in the actuator, which opens the turbine intake shut-off valve when a vacuum is present. The turbine intake shut-off valve is closed when the system is operating in mono-turbocharger mode, diverting exhaust gases from the right exhaust manifold, via the exhaust cross-over duct to the left exhaust manifold. A position sensor in the turbine intake shut-off valve allows the PCM to monitor the shut-off valve for correct operation. For additional information, Refer to: TURBOCHARGER