Connect GDS with ‘DATA LINK CONNECTOR’(DLC).

Warm engine up to normal operating temperature.

Turn all the electrical devices including air conditioner OFF.

Monitor "VGT ACTUATOR" parameter on the GDS.

Fig.1) VGT Actuator operating duty at idle : operating duty 80%.

Fig.2) Accelerator pedal 100% open : operating duty 45%.

☞ Accelerating makes VGT Actuator duty decrease but pressure detected by boost pressure sensor increases. If the booster pressure increases more than certain level, the operating duty of VGT Actuator is no more decreased but keep certain level.