GROUP
Campaign
DATE

Technical Service Bulletin

June, 2020

NUMBER
20-01-028H
MODEL(S)
Elantra (AD/ADa)

ECU & TCU UPDATE AND IVT REPLACEMENT
(SERVICE CAMPAIGN T5B)

SUBJECT:

 IMPORTANT

*** Dealer Stock and Retail Vehicles ***

Dealers must perform this Service Campaign on all affected vehicles prior to customer retail
delivery and whenever an affected vehicle is in the shop for any maintenance or repair.
When a vehicle arrives at the service department, access Hyundai Motor America’s “Vehicle
Information Screen (VIS)” via WEBDCS to identify open Campaigns.
Description: Certain vehicles may experience an illuminated warning light due to Diagnostic Trouble
Codes (DTC). Perform the ECU and TCU update, and, if necessary, replace the IVT (Intelligent Variable
Transmission) to resolve this condition.
 TCU DTC Codes: P0730, P0731, P0741, P0867, P1603
 ECU DTC Codes: P0106, P0068, P0101
Applicable Vehicles: Certain 20MY Elantra (AD/ADa)
Parts Information:
MODEL
Elantra (AD)
Elantra (ADa)

PART NAME
IVT

BEFORE

AFTER

48000-2H304

48000-2H304RM

48000-2H301

48000-2H301RM

GDS Information:
System Selection: ENGINE CONTROL UNIT (ECU)
Event #

Description

602.AD(A) PE 2.0MPI - P0068 DTC IMPROVEMENT
(*or use a later available event as listed in the GDS ECU Update screen if one is available.)
602

System Selection: TRANSMISSION CONTROL UNIT (TCU)
Event #
Description
601
601.AD(A) PE 2.0MPI - TCU ROM UPDATE
(*or use a later available event as listed in the GDS ECU Update screen if one is available.)

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

SUBJECT:

ECU & TCU UPDATE AND IVT REPLACEMENT (SERVICE CAMPAIGN T5B)

Warranty Information:
MODEL

Elantra
(AD/ADa)

OP CODE

OPERATION

OP
TIME

CAUSAL
PART

NATURE
CODE

CAUSE
CODE

00D031R1

Check TCU DTC - Update ECU/TCU Transmission Relearn - DTC Check

0.5
M/H

480002H301RM

I3A

ZZ3

00D031R2

Check TCU DTC – IVT Replacement
– Update ECU/TCU – Transmission
Relearn

3.5
M/H

480002H301RM

I3A

ZZ3

00D031R3

Check TCU DTC – Update ECU/TCU
– Transmission Relearn – IVT
Replacement -– Transmission Relearn

4.1
M/H

480002H301RM

I3A

ZZ3

Note 1: Submit Claim on Campaign Claim Entry Screen.
Note 2: If a part is found in need of replacement while performing Service Campaign T5B and the
affected part is still under warranty, submit a separate claim using the same Repair Order. If the affected
part is out of warranty, submit a Prior Approval Request for goodwill consideration prior to performing the
work.

NOTICE
Read and familiarize with Section C before starting ECU & TCU update process. Take a picture of the
IVT Pressure Compensation Code sticker located on top of the transmission bell housing for reference
when performing TCU learning.
ECU, TCU Update Flow (AD/ADa with IVT)
1.

Refer to the flowchart below to update the procedure.

TSB #: 20-01-028H

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SUBJECT:

SUBJECT:

ECU & TCU UPDATE AND IVT REPLACEMENT (SERVICE CAMPAIGN T5B)

NOTICE
1. Use the GDS-M to check the TCU DTC.
2. If one of the DTC(s) P0730, P0731, P0741, P0867 applies (History, Current, or Pending), replace
the IVT.
3. Replace the IVT according to the applicable vehicle shop manual.
4. After IVT replacement, perform ECU and TCU update first, then perform the IVT resetting auto
T/A values, oil-pressure characteristics input, TCU adaptive values learning procedure.

CAUTION

!
1.
2.
3.
4.
5.
6.

Verify the vehicle battery has reasonable charge.
Turn off all lamps (Do not leave head lamp switch in auto mode.), and all accessories.
Perform update with the ignition switch in the ON position.
Do not disconnect any cables connected to the vehicle or scan tool during update.
Do not start the engine during update.
Do not turn off the ignition switch during update.

NOTICE
You must initially perform GDS ECU Update in Auto Mode.
If the ECU Update starts but then fails in Auto Mode, perform the update in Manual Mode to recover.

!

WARNING

GDS-M Vehicle Battery Low Voltage Warning:
When the vehicle battery is lower than 12 volts, the GDS-M will trigger a Low Battery Voltage
Warning. If this Warning occurs,
A. Connect the battery to a fully charged battery jump pack or GR8 charger using “Power Supply
Mode” to continue the software update.
OR
B. Select “BACK” to exit the SW update. Then, start the engine and idle with the headlights on for
20 minutes. Return to the SW update after charging the battery.

TSB #: 20-01-028H

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SUBJECT:

SUBJECT:

ECU & TCU UPDATE AND IVT REPLACEMENT (SERVICE CAMPAIGN T5B)

Service Procedure:
A. Check DTC
1.
Scan the vehicle for any of the following DTC Codes:
P0730, P0731, P0741, P0867,
B. Update ECU and TCU
1.
Perform GDS Mobile software update per TSB 15-GI-001.
C. IVT, TCU Pressure Learning
1.

Perform IVT Resetting Auto T/A Values
and Oil-pressure Characteristics Input
procedures using the GDS-M.

NOTICE
IVT oil pressure characteristics label is
located on the IVT bell housing.

TSB #: 20-01-028H

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SUBJECT:

2.

ECU & TCU UPDATE AND IVT REPLACEMENT (SERVICE CAMPAIGN T5B)

Perform the TCU adaptive values learning
procedure.

NOTICE
Learning condition Intelligent Variable
Transmission Fluid (IVTF)
temperature: 86 - 194°F (30 - 90°C)
Start the engine after checking the IVTF
temperature with the Ignition ON.
Engine RPM will rise to approximately
1000 rpm after starting the engine.
After 30-120 seconds, the learning is
completed when the engine RPM reaches
the normal IDLE level.
Use the GDS-M to verify the IVT P-Range
learning is complete, and check TCU for
DTC P1603 (EOL P-Range Pressure
Learning Failed).
(1) If IVT- P Range learning is not
complete, and P1603 is present,
Replace the IVT (Refer to Section D.)
(2) If IVT-P Range is not complete, and
P1603 is not present, the learning
condition has not been met.
Re-perform Section C - IVT, TCU
Learning.

!

NOTICE
Learning completion can be confirmed by
using GDS-M to verify the IVT (“CVT”)
P-Range learning value is “ON”.
(“OFF” learning has not been completed)

CAUTION

Do not apply accelerator pedal and brakes, or operate shift levers during P
range, learning.
(If operated during learning, re-engage after shutting off)

TSB #: 20-01-028H

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SUBJECT:

SUBJECT:

ECU & TCU UPDATE AND IVT REPLACEMENT (SERVICE CAMPAIGN T5B)

D. IVT Replacement
1.

If transmission replacement is needed,
follow the applicable shop manual section:

Shop
Manual
2.

IVT System

Repair
Procedures

IVT

If IVT replacement is performed, refer to
Section C for IVT, TCU Learning.

ECU & TCU Update ROM information Tables
Use the applicable ROM information tables to determine if the vehicle is affected before attempting to
update the control unit software.
ECU
VEHICLE ENGINE

MY

EM

TM

ULEV
AD(A)
PE

2.0
ATK

IMMO

PCU P/No.

O

ROM ID
OLD

NEW

39171-2EFH5
39171-2EFK5

ADAUP2AS6B1A
ADAUP2AS6B1B

ADAUP2AS6B5A

X

39173-2EFH5
39173-2EFK5

ADAUP2US6B1A
ADAUP2US6B1B

ADAUP2US6B5A

O

39171-2EFG5
39171-2EFJ5

ADASP2AS6B1A
ADASP2AS6B1B

ADASP2AS6B5A

X

39173-2EFG5
39173-2EFJ5

ADASP2US6B1A
ADASP2US6B1B

ADASP2US6B5A

IVT

20MY
SULEV IVT

TCU
VEHICLE

ENGINE

PCU P/No.

2.0
ATK

39171-2EFG5
39173-2EFG5
39171-2EFH5
39173-2EFH5
39171-2EFJ5
39173-2EFJ5
39171-2EFK5
39173-2EFK5

AD PE

ADA PE

ROM ID
OLD

NEW

CAD0N20NL0
CAD0N20NL1
CAD0N20NL2
CAD0N20NL3

CAD0N20NL4

TSB #: 20-01-028H

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SUBJECT:

ECU & TCU UPDATE AND IVT REPLACEMENT (SERVICE CAMPAIGN T5B)

Manual Mode Password:
#602 ECU
Menu

Password

AD(A) PE 2.0MPI CVT -IMMO 39173-2EFH5/K5

7325

AD(A) PE 2.0MPI CVT +IMMO 39171-2EFH5/K5

7125

AD(A) PE 2.0MPI CVT -IMMO 39173-2EFG5/J5

7326

AD(A) PE 2.0MPI CVT +IMMO 39171-2EFG5/J5

7127

+IMMO = Start Stop Button
-IMMO = Key Start Button
#601 TCU
Menu

Password

AD(A) PE 2.0MPI 39171/3-2EFG5/H5, 39171/3-2EFJ5/K5

TSB #: 20-01-028H

3255

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