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 LocationReassembly
1.
Install the hub bearing to the
knuckle assembly.
(1)
Lay the knuckle assembly
(A) on press.
(2)
Lay a new hub bearing
upon the k ...
Removal
1.
Disconnect the negative(-) battery
terminal.
2.
Remove the front door trim panel.
(Refer to the BD group - "Front door")
3.
Remove the ...
Inspection
[Motor]
1.
Turn ignition switch OFF.
2.
Disconnect the EWGA connector.
3.
Check that the EWGA is stuck by foreign material.
...