Intake Charge Pressure Control System Check
- After the diagnostic trouble code of MFI system is read, turn off the ignition switch.
- Disconnect the hose (black) from the turbocharger wastegate actuator control boost nipple at the air outlet fitting and plug this nipple.
- Connect a hand vacuum pump to the hose (black).
- Use the vacuum pump to apply negative pressure, and check the negative pressure condition while the engine is stopped and while it is idling.
INTAKE CHARGE PRESSURE CONTROL SYSTEM CHECK
| Engine state | Normal state |
|---|---|
| Stop (Ignition switch: "ON" position) | Negative pressure is maintained |
| Idle (after warm-up) | Negative pressure leaks |
NOTE:
If this check indicates an abnormal condition, the turbocharger wastegate solenoid, the turbocharger wastegate actuator, or the hose is broken.