Intake Charge Pressure Check

INTAKE CHARGE PRESSURE CHECK





1. Disconnect the hose (black) from the turbocharger wastegate solenoid, and connect the pressure gauge to the hose. Cap the solenoid valve nipple after the hose (black) was disconnected.

CAUTION:
Two persons should be in the vehicle when the test is conducted;
the person in the passenger seat should read the indications shown by the pressure meter.

2. Drive at full-throttle acceleration in second gear and then measure the intake charge pressure when the engine speed is about 3,000 r/min or more.
Standard value: 68 - 122 kPa (9.9 - 17.6 psi)
3. If the intake charge pressure is lower than the standard value, check the following items for possible causes.

- Turbocharger wastegate actuator malfunction

- Turbocharger wastegate regulating valve malfunction

- Intake charge pressure leakage

- Turbocharger malfunction

- Turbocharger bypass valve malfunction
4. When the intake charge pressure is higher than standard value, the intake charge control may be faulty. Therefore check the followings:

- Turbocharger wastegate actuator malfunction

- Turbocharger wastegate regulating valve malfunction

- Rubber hose of turbocharger wastegate actuator disconnected or cracked