Kia Stinger CK Quiz
Engine Control System/Fuel System

Electric Wastegate Actuator (EWGA)

In this manual: Engine Control System/Fuel System
General Information — 8Maintenance — 27Engine Mechanical System — 47Engine Electrical System — 19Emission Control System — 12Engine Control System/Fuel System — 51Automatic Transmission System — 34All-Wheel Drive (AWD) System — 7Drive Shaft and Axle — 15Suspension System — 25Steering — 8Restraints — 19Brake System — 22Body (Interior and Exterior) — 47Front Seat Belt — 63Body Electrical System — 99Windshield Wiper/Washer — 11Heating, Ventilation, and Air Conditioning — 32
15steps
~90min
4/5difficulty
Done 0 of 15

Description and Operation

Description

The Electric Waste Gate Actuator (EWGA), mounted on the turbocharger, operates the waste gate (WGT) valve in the turbocharger and regulates the amount of compressed air based on the PWM signal from the ECM. The actuator consists of a DC motor that drives the valve, a two-stage gear reduction that increases the DC motor torque, a position sensor that detects the valve position, and an electronic control unit that controls the DC motor.

Circuit Diagrams

Wiring Diagram

Harness Connector

Repair Procedures

Removal

Installation

Adjustment

[EWGA Rod Adjustment Procedure Flow Chart]

  1. Make sure the turbocharger wastegate has cooled sufficiently before working on it.

  2. Turn the ignition off.

  3. Connect the diagnostic tool to the DLC (16-pin) connector under the driver's side instrument panel.

  4. Turn the ignition on.

  5. Select VIN or Vehicle on the initial screen.

  6. Enter the Engine Control menu after selecting the vehicle information (Vehicle Model, Model Year, Engine Type) or entering the VIN.

  7. Access KDS Engine > Current Data.

  8. Without starting the engine, turn the ignition ON for 5 seconds, then OFF for 5 seconds, and check the "EWGA Low Mechanical Stop Adaptation Value" on the KDS.

    Repeat this step until the adaptation value no longer changes compared with the previous cycle, or is below 0.05 V.

  9. Make sure the "EWGA Low Mechanical Stop Adaptation Value" is within the specified voltage range.

    Coolant Temperature (°C) Specified voltage range (V)
    41 - 60 3,8 - 4,0
    26 - 40 3,85 -4,05
    Below 25 3,9 - 4,1

  10. If the measured voltage is not within the specified voltage range, adjust the EWGA rod length. Otherwise, no further procedure is required.

    1. Loosen the rod end lock nut (A) and remove the C-clip (B).

    2. Adjust the rod end (C) by turning it clockwise (D) or counterclockwise (E) to meet the specification.

      For example, if the engine coolant temperature is below 25 °C, adjust as follows.

      EWGA Lower Mechanical Stop Adaptation Value (V) Rod end adjustment direction Change in rod length (after adjustment)
      > 4,1 Clockwise shorter
      < 3,9 counterclockwise longer

  11. Temporarily install the rod end (B) onto the turbocharger lever (A). Do not tighten the rod end lock nut (C) and the C-clip (D).

  12. Check the "EWGA Low Mechanical Stop Adaptation Value" after selecting the "Current Data" menu.

    Turn the ignition ON and OFF several times until the "EWGA Low Mechanical Stop Adaptation Value" is within 0.05 V.

  13. If the measured voltage is not within the specified voltage range, repeat steps 9 through 11 until the voltage is within the specified range.

  14. Make sure the "EWGA Low Mechanical Stop Adaptation Value" is within the specified voltage range.

  15. If the voltage is within the specified range, install the rod end onto the turbocharger lever.

    1. Install the rod end (B) onto the turbocharger lever (A).

    2. Tighten the rod end lock nut (C).

    3. Install the C-clip (E).

Troubleshooting

Signal Waveform

Test yourself

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