Kia Optima: Electric WGT Control Actuator. Description and OperationIt operates the vain in the Waste Gate Turbocharger (WGT) and regulates the compressed air amount by the ECM's PWM signal. This actuator consists of a DC motor which actuates the vane, a 2-step gear which increases torque of the DC motor, a position sensor which detects status of the vane, an electric control unit which drives the DC motor.

Installation
Electric WGT Control Actuator. Components and Components LocationEngine Coolant Temperature Sensor (ECTS). Schematic Diagrams
Circuit Diagram
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Inspection
1.
Turn the ignition switch OFF.
2.
Disconnect the injector connector.
3.
Measure resistance between the injector terminals
1 and 2.
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Repair procedures
If the there is lack of power, excessive oil consumption or poor fuel economy,
measure the compression pressure.
1.
W ...