Hyundai Santa Cruz: Engine Control System / Electric Waste Gate Actuator (EWGA)

- Description The Electric Waste Gate Actuator (EWGA) installed on the turbocharger.EWGA operates the vane in the Waste Gate Turbocharger (WGT) and regulates the compressed air amount based on the PWM signal from the ECM.

1.Turn the ignition switch OFF and disconnect the battery negative (-) terminal.

2.Disconnector EWGA connector.

3.Measure resistance between the EWGA terminals 1 and 2.

4.Check that the resistance is within the specification.

Specification : Refer to "Specification"

1.Turn the ignition switch OFF.

2.Connect the diagnostic tool on the Data Link Connector (DLC).

3.Check the output voltage at each position of the EWGA position sensor on current data item within the specification.

Specification : Refer to "Specification"

• When DTC P2562 / 2563/2565 is set, perform the rod adjustment procedure first and check again that the same fault code is detected before replacing the Electric WGT Control Actuator.

1. Switch "OFF" the ignition and disconnect the battery negative (-) terminal.

2. Remove the intercooler inlet hose.(Refer to Engine Mechanical System - " Intercooler")

3. Remove the air cleaner assembly.(Refer to Engine Mechanical System - "Air Cleaner")

4. Disconncet the EWGA connecter (A).

5.Remove the upper heat protector (A).

Tightening torque :7.8 - 11.8 N.m (0.8 - 1.2 kgf.m, 5.8 - 8.7 lb-ft)

6.After removing C-ring (A), remove the shift link assembly.

7.Remove the engine room under cover.(Refer to Engine Mechanical System - "Engine Room Under Cover")

8.Remove the lower heat protector (A).

Tightening torque :7.8 - 11.8 N.m (0.8 - 1.2 kgf.m, 5.8 - 8.7 lb-ft)

9.Remove the oil feed pipe (A).

Tightening torque :Eyebolt : 27.5 - 31.4 N.m (2.8 - 3.2 kgf.m, 20.3 - 23.1 lb-ft)Nut : 7.8 - 11.8 N.m (0.8 - 1.2 kgf.m, 5.8 - 8.7 lb-ft)Bolt : 9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft)

10.Remove the oil drain pipe (A).

Tightening torque :7.8 - 11.8 N.m (0.8 - 1.2 kgf.m, 5.8 - 8.7 lb-ft)

11. After remove the installing bolt, remove the EWGA (A).

Tightening torque :11.7 - 13.7 N.m (1.2 - 1.4 kgf.m, 8.6 - 10.1 lb-ft)

• When carrying the turbo charger, do not hold the rod of the turbo charge to prevent bending the rod.

• Perform load adjustment when exchanging EWGA.

• When installing EWGA, do not reuse the C-ring.

1. Install in the reverse order of removal.

1.Check that the waste gate turbocharger is cool enough to work on.

• Use an electric fan to help cool down fast.

• The area to be cooled (A) and the wind direction (B) are as shown below.

2.Switch "OFF" the ignition.

3.Connect the diagnostic tool to DLC connector.

4.Switch "ON" the ignition.

• Do not start the engine.

5.Select VIN or Vehicle on the initial screen.

6.Enter "Engine Control" menu after slelecting vehicleinformation (Vehicle model, Model year, Engine type)or entering the VIN number.

7.Access to diagnostic tool Engine > Current Data

8.Without starting the engine, repeatedly turn theignition ON for 5 seconds and OFF for 5 seconds,and then check the "Adaptation value for lowmechanical stop of EWGA" on the diagnostic tool.Repeat this step until the amount of difference in theadaptation value from the previous cycle is below0.05 V.

• Switch ON/OFF the ignition pausing for 5 seconds in each ignition status.

9.Check that the "Adaptation value for the lower mechanical stop of EWGA" is within the specified voltage range.

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) on the turbo side and remove the C-ring (B).

(2)Adjust the rod end (C) by rotating it clockwise (D) or counterclockwise (E) to satisfy the specification.For example, if the coolant temperature is below 25 °C (77 °F), adjust as follows.

• The lower limit of the adaptation value for themechanical stop of EWGA is between 3.2Vand 4.85V (based on the cooling watertemperature of 25°C). If the adaptation valueis below 3.2V or above 4.85V, the ECM willrecognize it as EWGA failure andadjustment of the previous adaptation valuebecomes impossible.

• When it becomesimpossible to make adjustments,replacement of EWGA is necessary. So, becareful not to exceed the limit value whenadjusting the load.

11.Install the rod end (B) to the turbocharger lever (A). But, do not tighten the locking nut (C) and do not install the C-ring (D).

12.Check " Adaptation value for the lower mechancal stop of EWGA" after selecting "Current Data" menu.Switch ON/OFF the ignition repeatedly until the change in "Adaptation value for the lower mechanical stop of EWGA" is within 0.05V.

• Switch ON/OFF the ignition pausing for 5 seconds in each ignition status.

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

14.Check that the "Adaptation value for the lower mechancal stop of EWGA" is within the specified voltage range.

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

(1)Temporarily install the load end (B) to the turbocharger lever (A).

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

(3)Install the C-ring (E).

• Be careful not to remove the washer (D).