GROUP
Engine
DATE

Technical Service Bulletin

July, 2021

NUMBER
21-EM-009H
MODEL(S)
Santa Fe Sport (AN)
Santa Fe (TM)
Sonata (LF/YF)
Veloster N (JSN)

THETA-II 2.0T TURBOCHARGER EWGA DIAGNOSIS
AND SERVICE PART REPLACEMENT GUIDELINES

SUBJECT:

This bulletin supersedes TSB 12-EM-003 to update the contents with the latest information.

Description: This bulletin provides additional service diagnostic information and repair procedures
related to Electric Waste Gate Actuator (EWGA) equipped vehicles listed below.
Refer to the applicable Engine Control / Fuel System sections in the Shop Manual, and then follow
the procedures outlined in this bulletin whenever a vehicle with the following symptom(s) are being
diagnosed:
➢
➢
➢
➢

Check Engine Light illumination with EWGA related DTC.
Intermittently high/low turbocharger boost pressures.
Abnormal noise from the turbocharger.
Reduced engine power.

Component Overview:

Actuation Shaft
EWG Motor/Actuator

o The EWG Motor/Actuator is
connected to an actuation shaft that
controls a swing valve, releasing
excess exhaust gases from the
turbocharger.
o Diversion of exhaust gases
regulates the rotating speed of the
turbocharger compressor turbine.

(Figure Example: JSN Turbocharger – Exhaust Manifold)
Assembly
Applicable
• Certain
• Certain
• Certain
• Certain
• Certain

Vehicles:
2015-2019MY
2011-2014MY
2013-2018MY
2019-2020MY
2019-2022MY

Sonata (LF) vehicles with 2.0L Turbo engines.
Sonata (YF) vehicles with 2.0L Turbo engines.
Santa Fe Sport (AN) vehicles with 2.0L Turbo engines.
Santa Fe (TM) vehicles with 2.0L Turbo.
Veloster N (JSN) vehicles with 2.0L Turbo engines.

Circulate To: General Manager, Service Manager, Parts Manager, Warranty Manager, Service
Advisors, Technicians, Body Shop Manager, Fleet Repair

SUBJECT:

THETA-II 2.0T TURBOCHARGER EWGA DIAGNOSIS AND SERVICE PART REPLACEMENT GUIDELINES
AND SERVICE PART REPLACEMENT GUIDELINES

DTC Information:
DTC
P2562
P2563
P2565

DESCRIPTION
Turbocharger Boost Control Position Sensor Circuit
Turbocharger Boost Control Position Sensor Circuit Range/Performance
Turbocharger Boost Control Position Sensor Circuit High

Parts Information:
MODELS

PART NAME

PART NUMBER

FIGURE

2.0T
13-16MY Santa Fe
Sport (AN)
Sonata (YF)

EWGA

39400-2G700

Refer to page 3

Snap ring

28231-2G411

Stud

28233-2GTA1

EWGA

39400-2GTA0

Snap ring

28231-2G411

EWGA

39400-2GTA0

Snap ring

28231-2C601

2.0T
17-18MY Santa Fe
Sport (AN)
Santa Fe (TM)
Sonata (LF)
2.0T
Veloster N (JSN)

NOTES

Refer to page 3

Replace
According to
Inspection
Results

Refer to page 3

Warranty Information:
MODEL

OP CODE

OPERATION

Sonata (YF)

28248R1A

EWGA
Replacement

Sonata (LF)
Veloster N (JSN)

28248R00

EWGA
Replacement

28248RQ0

Diagnostic Tool
Operation

Santa Fe Sport (AN)
Santa Fe (TM)
All Models Above

OP TIME

CAUSAL
PART

Refer to Please see
WEBLTS applicable
EWGA
for
part
current
number
LTS time
above for
applicable
model
0.3

NATURE CAUSE
CODE CODE

I3T

ZZ5

NOTE: Normal Warranty Applies.

NOTICE
If the EWGA has an internal issue that requires replacement, replace with applicable service
part listed in parts information. Do not replace the entire turbocharger assembly.

TSB #: 21-EM-009H

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SUBJECT:

THETA-II 2.0T TURBOCHARGER EWGA DIAGNOSIS AND SERVICE PART REPLACEMENT GUIDELINES

Turbocharger Component Reference Information:
MODEL
PART NUMBER

FIGURE
28233-2GTA1

2.0T
Sonata (YF)
13-16MY Santa Fe
Sport (AN)

39400-2G700

28231-2G410

28231-2G411

2.0T
Sonata (LF)
Santa Fe (TM)
17-18MY Santa Fe
Sport (AN)

39400-2GTA0

28231-2GTA1

28231-2G411

39400-2GTA0

2.0T
Veloster N (JSN)

28231-2GTE0
28231-2C601

NOTE: Do not replace the entire turbocharger for an EWGA out of spec / inoperative condition.
EWG Motor Inspection Procedure:
1.

Turn ignition switch OFF.

2.

Disconnect the EWGA connector (A).

A

TSB #: 21-EM-009H

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SUBJECT:

SUBJECT:

THETA-II 2.0T TURBOCHARGER EWGA DIAGNOSIS AND SERVICE PART REPLACEMENT GUIDELINES

3.

AND SERVICEpreventing
PART REPLACEMENT GUIDELINES
Check that there are no obstructions
EWGA motor movement.

4.

Measure resistance between the (+) and (-) terminals
of the motor and check that it is within specification.

5.

If the EWGA motor resistance is not within
specification, replace the EWGA with the service
procedure on page 7.

EWGA Position Sensor Inspection Procedure:
1.

Prepare the GDS to begin the EWGA Position
Sensor inspection and adjustment.
a) Ensure ignition switch is OFF.
b) Connect the 16-pin DLC cable from the VCI into
the vehicle’s 16-pin connector under the driver
side instrument panel.
c) Turn on the VCI and diagnostic terminal with the
ignition key in the ON position.

NOTICE
Do NOT start the engine. The turbocharger and its actuation mechanism should be cold to
allow proper inspection and adjustment procedures.
d) Choose VIN or Vehicle on the initial screen.
e) Enter vehicle information by pressing the VIN
Auto Detect button; entering the VIN or selecting
the vehicle model, model year, engine type, and
Engine Control as the system, and then click
OK.
2.

Choose Current Data, and then select Battery
Voltage after Ignition Key and Voltage Value for
Boost Pressure Actuator Position Control.

TSB #: 21-EM-009H

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SUBJECT:

SUBJECT:

3.

THETA-II 2.0T TURBOCHARGER EWGA DIAGNOSIS AND SERVICE PART REPLACEMENT GUIDELINES

Choose the Graph and check the voltage.
➢ Turn ignition ON/OFF three times, and then
check the Max voltage value just as ignition ON
state is about to change to ignition OFF state and
vice versa. Refer to specified voltages on the
following page.
➢ If the EWGA position sensor is not within
specified voltage, perform the following EWGA
ADJUSTMENT PROCEDURE, and check that
the same fault code is detected again before
replacing the EWGA.

NOTICE
If the EWGA has an internal issue that requires replacement, replace with applicable
service part listed in parts information. Do not replace the entire turbocharger
assembly.

EWGA Adjustment Procedure:
1. Open the hood and securely support it.

!

CAUTION

B

Check that the engine is cool
enough to work on.

Loosen the turbocharger upper cover bolt (B) and
remove cover.
2.

Loosen the shaft end lock nut (C) and remove the
retaining clip (D). Save the retaining clip for later
use.
D

!

CAUTION

C

When loosening lock nut (C)
securely hold the waste gate
arm to prevent shaft bending.

TSB #: 21-EM-009H

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SUBJECT:

3.

THETA-II 2.0T TURBOCHARGER EWGA DIAGNOSIS AND SERVICE PART REPLACEMENT GUIDELINES

AND SERVICE
PART REPLACEMENT
GUIDELINES
Adjust the shaft end by rotating
it clockwise
or
counterclockwise in ½ turn increments until voltage is
within specification range.

Then temporarily install the shaft end and tighten the
shaft end lock nut. Check the Voltage Value for
Boost Pressure Actuator Position Control by
using the inspection procedure with the GDS.
The EWGA must be in the fully closed position while
applying pressure on the EWGA lever to accurately
measure the output voltage while the engine is
cold.
➢ If output voltage > Max. specified Voltage:
Turn shaft ends clockwise (to shorten the
ends)

E

➢ If output voltage < Min. specified Voltage:
Turn shaft ends counterclockwise (to
lengthen the ends).
If unable to achieve proper voltage specification
when the engine is cold, it may be necessary to
rotate both EWGA shaft ends (E) to achieve proper
voltage.

4.

If the output voltage is not within specification, repeat step 3 in EWGA adjustment procedure
until voltage is within specification range.

5.

If output voltage is still not within specification after EWGA adjustment, replace EWGA with the
service procedure on the following page.

6.

If output voltage is within specification, reinstall all
the removed parts in reverse
order of removal.
Start engine and let run for a few minutes
while cycling the throttle, then shut off
engine.
Recheck voltage while applying
pressure on the EWGA lever to accurately
measure output voltage as indicated in the
photo on the right.

!

CAUTION

Engine components are hot and
can cause burns.

TSB #: 21-EM-009H

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SUBJECT:

THETA-II 2.0T TURBOCHARGER EWGA DIAGNOSIS AND SERVICE PART REPLACEMENT GUIDELINES

Service Procedure:
1.

Turn off the engine and remove the negative terminal
from the battery.

NOTICE
➢ Be sure to record the radio presets prior to battery disconnection.
➢ For service on 2011-2014MY Sonata (YF) Vehicles, proceed to service
procedure step 4 and steps 6-10.

2.

Remove the air cleaner (F).
Refer to the shop manual section for complete
service procedure on pertaining vehicle:
Engine Mechanical System > Intake And Exhaust
System > Air Cleaner

NOTICE

F

Location and components of air
cleaner will vary depending on
engine specifications.

3.

Remove the intercooler inlet pipe and hose
assembly.
Refer to the shop manual section for complete
service procedure on pertaining vehicle:
Engine Mechanical System > Intake And Exhaust
System > Intercooler

4.

Disconnect the EWGA connector (G).
Refer to the shop manual section for complete
service procedure on pertaining vehicle:
Engine Control / Fuel System > Intake Engine
Control System > Electric WGT Control Actuator

G

TSB #: 21-EM-009H

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5.

THETA-II 2.0T TURBOCHARGER EWGA DIAGNOSIS AND SERVICE PART REPLACEMENT GUIDELINES

AND SERVICE
PARTinstallation
REPLACEMENT GUIDELINES
Remove the exhaust manifold
heat shield
bolt (H).

H

6.

Remove the snap-ring (I) and remove the shaft
linkage assembly (J).
J

NOTICE

I

Do not reuse snap-ring from EWGA
assembly.

7.

Remove EWGA mounting bolts (K) and replace
EWGA.

!

K

CAUTION

Do not carry EWGA by the actuation shaft
as permanent deformation can occur.

NOTICE
Tightening Torque: 9.4 lb-ft (12.75 Nm)

8.

Reinstall parts in reverse order of disassembly.

NOTICE
Reprogram the radio presets recorded from service procedure step #1 on page 7.

9.

Perform the EWGA shaft adjustment procedure on page 5 until EWGA voltage is within
acceptable range.

10. The service procedure is now complete.

TSB #: 21-EM-009H

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