GROUP
TRA

NUMBER
068

MODEL
2011-2015MY
Optima Hybrid
(TF HEV)
DATE
October 2017

TECHNICAL SERVICE BULLETIN
SUBJECT:

HCU/TCU LOGIC IMPROVEMENT FOR DTC P1744
(400 MESH EQUIPPED TRANSMISSIONS ONLY)

This bulletin provides the procedure to improve the logic of the Hybrid Control Unit (HCU) on
some 2011-2012MY Optima Hybrid (TF HEV), produced from February 15, 2011 through
December 28, 2012, and both the Hybrid Control Unit (HCU) and the Transmission Control Unit
(TCU) on some 2013-2015MY Optima Hybrid (TF HEV) vehicles, produced from January 15,
2013 through March 27, 2015, which may experience a malfunction indicator lamp illumination
with DTC P1744. To correct this concern, apply the improved logic to the HCU only (11-12MY)
or HCU and TCU (13-15MY) using the KDS ECU Upgrade function as described in this bulletin.
For confirmation that the latest reflash has been applied to a vehicle you are working on, verify
the ROM ID using the table on page 3 of this bulletin.
DTC P1744 – Transmission Engine Clutch System Performance

 NOTICE
This TSB only applies to vehicles equipped with a 400 Mesh solenoid transmission.
For additional information about identifying 400 Mesh Transmissions and/or in the
case of an automatic transmission having been replaced with a 100 Mesh solenoid
valve equipped unit (from 400 Mesh to 100 Mesh), refer to TSB TRA059.
File Under:
Circulate To:

X General Manager


X Service Advisors


X Technicians


X Service Manager


X Parts Manager


X Body Shop Manager  Fleet Repair


Page 2 of 9
SUBJECT:

HCU/TCU LOGIC IMPROVEMENT FOR DTC P1744
(400 MESH EQUIPPED TRANSMISSIONS ONLY)

ECU Upgrade Procedure:
To correct this condition, the ECU(s) should be reprogrammed using the KDS
ECU Upgrade function, as described in this bulletin.
Upgrade Event Name
335.TF HEV HCU MIL ON DTC (P1744) LOGIC IMPROVEMENT (FOR 400MESH)
336.TF HEV TCU MIL ON DTC (P1744) LOGIC IMPROVEMENT (FOR 400MESH)

 NOTICE









A fully charged battery is necessary before ECU upgrade can take place. It is
recommended that the Midtronics GR8-1299 system be used in ECU mode during
charging. DO NOT connect any other battery charger to the vehicle during ECU
upgrade.
All ECU upgrades must be done with the ignition key in the ‘ON’ position.
Be careful not to disconnect the VCI-II connected to the vehicle during the ECU
upgrade procedure.
DO NOT start the engine during ECU upgrade.
DO NOT turn the ignition key ‘OFF’ or interrupt the power supply during ECU
upgrade.
When the ECU upgrade is completed, turn the ignition ‘OFF’ and wait 10 seconds
before starting the engine.
ONLY use approved ECU upgrade software designated for the correct model,
year.

 NOTICE
Before attempting an ECU upgrade on any Kia model, make sure to first determine
whether the particular model is equipped with an immobilizer security system.
Failure to follow proper procedures may cause the PCM to become inoperative after
the upgrade and any claims associated with this repair may be subject to
chargeback.

TSB: TRA068 Optima Hybrid (TF HEV) October 2017

Page 3 of 9

HCU/TCU LOGIC IMPROVEMENT FOR DTC P1744
(400 MESH EQUIPPED TRANSMISSIONS ONLY)

SUBJECT:

ROM ID INFORMATION TABLE:
Upgrade Event 335, 336 (TF HEV)
Model

MY

SYS

IMMO

ECU P/No.

39700-2G100
11-12MY
39700-2G101

HCU
TF
HEV

Yes

ROM ID
Previous
GYFEANEH HS0-C000
GYFEANEH HS1-C000
GYFEANEH HS4-C000
GYFECNEH HS0-C000
GYFEANEH HS5-C000
GYFECNEH HS1-C000
GYFECNEH HS2-C000
GYFEDNEH HS0-C000
GYFEDNEH HS1-C000
GYFEDNEH HS2-C000
GYFEDNEH HS3-C000
GYFEDNEH HS4-C000
GYFEDNEH HS5-C000
GYFEDNEH HS6-C000
GYFEDNEH HS7-C000
GYFEDNEH HS8-C000
GYFEDNEH HS9-C000

New

GYFECNEH HS3-C000

13MY

39700-2G104

14-15MY

39700-2G120

GYFEENEH HS0-C000

GYFEENEH HS1-C000

13MY

39108-2G912
39108-2G915

TTF2H24SA4
TTF2H24SA6

TTF2H24SA9

39108-2GAN0

TTF2H24SA7

TTF2H24SA9

TCU
14-15MY

-

GYFEDNEH HSA-C000

To verify the vehicle is affected, be sure to check the Calibration Identification of the vehicle's ECU ROM
ID and reference the Information Table as necessary.

 NOTICE
Prior to performing the ECU upgrade(s), be sure to check that the KDS is fully
charged.
1.

Prior to performing the ECU upgrade(s), verify that the vehicle is equipped with a 400
Mesh transmission by referring to page 2 of TSB TRA059.

2.

Connect the VCI-II to the OBD-II
connector, located under the driver’s side
of the instrument panel.

 NOTICE
The ECU upgrade function on
KDS is operating wirelessly. It is
not necessary to perform the
upgrade via USB cable.

TSB: TRA068 Optima Hybrid (TF HEV) October 2017

Page 4 of 9
SUBJECT:

HCU/TCU LOGIC IMPROVEMENT FOR DTC P1744
(400 MESH EQUIPPED TRANSMISSIONS ONLY)

3.

With the ignition ON, turn ON the KDS
tablet. Select KDS from the home
screen.

4.

Confirm communication with VCI (A) and
then configure the vehicle (B) using the
AUTO VIN (C) feature.

B
A

C
5.

Select ECU Upgrade.

6.

The KDS will check the server for
recently uploaded Events and then
automatically download Upgrade Events
#335 for 11-15MY and #336 for 1315MY.

 NOTICE
The vehicle must be identified in
Vehicle Selection to download
an Event for that vehicle.

TSB: TRA068 Optima Hybrid (TF HEV) October 2017

KDS
screenshot
shown
above is for
demonstration purposes only. Events shown in
screenshot are not applicable to this bulletin.

Page 5 of 9
SUBJECT:

7.

HCU/TCU LOGIC IMPROVEMENT FOR DTC P1744
(400 MESH EQUIPPED TRANSMISSIONS ONLY)

Select Auto Mode.

CAUTION
Do NOT attempt to perform a
Manual Mode upgrade UNLESS
Auto Mode fails. Always follow
the instructions given on the
KDS in either Auto or Manual
mode.
8.

Select the HCU system under the
System selection menu.
Touch ID Check (D) and confirm that the
latest update is available.

D

Select Upgrade Event #335 and select
Upgrade to continue.

9.

The ECU upgrade will begin and the
progress of the upgrade will appear on
the bar graph. Upgrade part (1/2) (E) will
download the upgrade event to the VCIII. Upgrade part (2/2) (F) will upgrade the
ECU.

CAUTION

E

F

Do not touch the system
buttons (like ‘Back’, ‘Home’,
‘etc.’) while performing ECU
Upgrade.
10. If a “Communication Fail” screen
appears, verify that the VCI-II and KDS
are communicating properly. Touch OK
and restart the procedure from step 4.

 NOTICE
If an error notice continues to
appear or if the upgrade cannot
be performed, contact Techline
or GIT America Help Desk.
TSB: TRA068 Optima Hybrid (TF HEV) October 2017

Page 6 of 9
SUBJECT:

HCU/TCU LOGIC IMPROVEMENT FOR DTC P1744
(400 MESH EQUIPPED TRANSMISSIONS ONLY)

11. When instructed on the KDS, turn the
ignition OFF for ten (10) seconds then
back on. Touch OK to continue.

12. Once the upgrade is complete, touch OK
to finalize the procedure.

13. For 11-12MY vehicles, when prompted,
select Yes to check for Diagnostic
Trouble Codes (DTC) and erase any
DTCs stored such as EPS, ESC, and
TPMS that may have been set during the
upgrade. Proceed to step 15.
For 13-15MY vehicles, when prompted,
select No for the Diagnostic Trouble
Codes (DTC) check, then return to the
KDS Home Page and proceed to the
next step.
14. For 13-15MY vehicles, repeat steps 4-12
and perform Upgrade Event #336 with
the A/T system selected under the
System selection menu.
When prompted, select YES to check for
Diagnostic Trouble Codes (DTC) and
erase any DTCs stored such as EPS,
ESC, and TPMS that may have been set
during the upgrade.

TSB: TRA068 Optima Hybrid (TF HEV) October 2017

11-12MY

13-15MY

Page 7 of 9
SUBJECT:

HCU/TCU LOGIC IMPROVEMENT FOR DTC P1744
(400 MESH EQUIPPED TRANSMISSIONS ONLY)

15. After completion of the upgrade(s), reset
the TCU adaptive values in S/W
Management → Automatic Transaxle →
Resetting Auto T/A Values.

16. Perform an Electronic Clutch Fluid
Pressure Calibration by returning to the
KDS home screen then selecting S/W
Management → HEV Control System →
E/C Pressure Adjustment.

17. Start the engine to confirm proper
operation of the vehicle.

 NOTICE
The TCM adaptive learning drive
procedure is not needed for this
update.

Manual Upgrade Procedure:

 NOTICE
The manual upgrade should ONLY be performed if the automatic upgrade fails.
If the automatic upgrade fails, turn the ignition OFF for about 10 seconds then place
it back in the ON position to reset the control unit BEFORE performing manual
upgrade.
See table below for Manual Mode passwords.
TSB: TRA068 Optima Hybrid (TF HEV) October 2017

Page 8 of 9
SUBJECT:

HCU/TCU LOGIC IMPROVEMENT FOR DTC P1744
(400 MESH EQUIPPED TRANSMISSIONS ONLY)
Manual Mode ECU Upgrade Passwords
Menu

Password

TF HEV 11~12MY HCU +IMMO/SMK : 39700-2G100/101

2101

TF HEV 13MY HCU +IMMO/SMK : 39700-2G104

2104
2120
2915

TF HEV 14~15MY HCU +IMMO/SMK : 39700-2G120
TF HEV TCU : 39108-2G912/915/AN0

1.

Within the ECU Upgrade screen displayed, select Manual Mode.

2.

Select the HCU system under the System selection menu. Select Upgrade Event #335
and select Upgrade to continue.

3.

Select the appropriate control unit part number with reference to the ROM ID Information
Table on page 3, and select OK.

4.

Enter the appropriate password from the Manual Mode password table above and select
OK.

5.

The upgrade will begin and the progress of the upgrade will appear on the bar graph.

6.

When instructed on the KDS, turn the ignition OFF for ten (10) seconds then back on.
Touch OK to continue.

7.

Once the upgrade is complete, touch OK to finalize the procedure.

8.

For 11-12MY vehicles, when prompted, select Yes to check for Diagnostic Trouble Codes
(DTC) and erase any DTCs stored such as EPS, ESC, and TPMS that may have been
set during the upgrade. Proceed to the step 9.
For 13-15MY vehicles, when prompted, select No for the Diagnostic Trouble Codes
(DTC) check, then return to the KDS Home Page and proceed to the next step.

9.

For 13-15MY vehicles, repeat steps 1-6 and perform Upgrade Event #336 with the A/T
system selected under the System selection menu.
When prompted, select YES to check for Diagnostic Trouble Codes (DTC) and erase any
DTCs stored such as EPS, ESC, and TPMS that may have been set during the upgrade.

10. After completion of the upgrade(s), reset the TCU adaptive values in S/W Management →
Automatic Transaxle → Resetting Auto T/A Values.
11. Perform an Electronic Clutch Fluid Pressure Calibration by returning to the KDS home
screen then selecting S/W Management → HEV Control System → E/C Pressure
Adjustment.
12. Start the engine to confirm proper operation of the vehicle.

 NOTICE
The TCM adaptive learning drive procedure is not needed for this update.
TSB: TRA068 Optima Hybrid (TF HEV) October 2017

Page 9 of 9
SUBJECT:

HCU/TCU LOGIC IMPROVEMENT FOR DTC P1744
(400 MESH EQUIPPED TRANSMISSIONS ONLY)

AFFECTED VEHICLE RANGE:
Model

Production Date Range

11-12MY Optima Hybrid (TF HEV)

February 15, 2011 through December 28, 2012

13-15MY Optima Hybrid (TF HEV)

January 15, 2013 through March 27, 2015

WARRANTY INFORMATION:
N Code: I14 C Code: ZZ3
Claim
Type

Causal P/N

Qty.

Refer to ROM ID
Information Table
W

0
Refer to ROM ID
Information Table

Repair
Description

Labor
Op Code

Op
Time

11-12MY 400 Mesh
Solenoid Valve Logic
Improvement
HCU Only Upgrade

39110FD2

0.3
M/H

13-15MY 400 Mesh
Solenoid Valve Logic
Improvement
HCU & TCU Upgrade

39110FD3

Replacement
P/N

Qty.

N/A

0

0.4
M/H

TSB: TRA068 Optima Hybrid (TF HEV) October 2017