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1.Disconnect the hose (black) from the waste gate solenoid valve, and connect the pressure
gauge to the hose. Cap the nipple of the solenoid valve from which the hose (black) has been
disconnected.
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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.
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2.Drive at full-throttle acceleration in second and then measure the supercharging pressure
when the engine speed in about 3,000 r/min.
Standard value: 68 - 122 kPa
3.If the supercharging pressure deviates from the standard value, check the following
items for possible cause.
- Malfunction of the waste gate actuator
- Malfunction of waste gate valve
- Leakage of supercharging pressure
- Malfunction of the turbocharger
- Malfunction of the air by-pass valve
4.When the indicated supercharging is more than standard value, supercharging control
may be faulty, therefore check the followings.
- Malfunction of the waste gate actuator
- Malfunction of waste gate valve
- Disconnection or cracks of the waste gate actuator rubber hose
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