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NHTSA ID Number: 10187821

Manufacturer Communication Number: TSB_ENG228

TSB/Document Date: 2021-03-04


Summary

TECHNICAL SERVICE BULLETIN: 3.8L GDI MISFIRE DTC JUDGMENT LOGIC IMPROVEMENT - This bulletin provides the procedure to improve the logic of the Engine Control Module (ECM) on some 2020MY Telluride (ON) vehicles with 3.8 GDI ULEV engines, produced from January 9, 2019 through May 19, 2020, which may exhibit a cold start misfire with MIL ON for the misfire related DTC(s) listed below.


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TSB/Document ID: TSB_ENG228

Replacement Service Bulletin Number:

MFR Communication Date: 2021-02-01

MFR Internal Campaign ID/Software Version:

Communication Type: Service Bulletin/Repair Instructions

NHTSA Components: ENGINE AND ENGINE COOLING

MFR Component System:

MFR Component Subsystem:


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GROUP
ENG

MODEL
2020MY
Telluride (ON)

NUMBER
228

DATE
January 2021

TECHNICAL SERVICE BULLETIN
SUBJECT:

3.8L GDI MISFIRE DTC JUDGMENT LOGIC IMPROVEMENT

This bulletin provides the procedure to improve the logic of the Engine Control Module (ECM) on
some 2020MY Telluride (ON) vehicles with 3.8 GDI Atkinson ULEV engines, produced from
January 9, 2019 through May 19, 2020, which may exhibit a cold start misfire with MIL ON for
the misfire related DTC(s) listed below. To correct this concern, apply the improved logic to the
Engine system 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 Description:
P0300 – Random/Multiple Cylinder Misfire Detected
P0301, P0302, P0303, P0304, P0305, P0306 – Cylinder (1-6) Misfire Detected

 NOTICE
A Vehicle Diagnosis Number (VDN) must be created with DTC(s) P0300-P0306, prior to
performing the ECM Logic Improvement. If a VDN is not created, Warranty claim
submission issues WILL occur.

KiaeBay logo Diagnostic System (KDS)

Printed TSB copy is for reference only; information may be updated at any time.
Always refer to KGIS for the latest information.
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 8
SUBJECT:

3.8 GDI MISFIRE DTC JUDGMENT LOGIC IMPROVEMENT

ECU Upgrade Procedure:
To correct this condition, the ECU should be reprogrammed using the KDS
download, as described in this bulletin.
Upgrade Event Name
518. ON 3.8GDI ATKINSON ULEV AT MISFIRE DTC JUDGMENT LOGIC IMPROVEMENT

 NOTICE







Confirm a fully charged battery with 12.3 volts or higher is necessary or the use of
a fully charged jump starter box connected to the battery.
Ensure the KDS GDS is sufficiently charged at 60% or higher prior to reflash.
All ECU upgrades must be done with the ignition key in the ‘ON’ position unless
otherwise stated.
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 application.

 IMPORTANT
It is recommended to ALWAYS check the Electronic Parts Catalog (EPC) to locate the
ECU Part Number respective to Auto/Manual Mode ROM IDs. DO NOT reference the
parts label affixed to the ECU.

 NOTICE
Before attempting an ECU upgrade on any KiaeBay logo model, make sure to first determine
whether the applicable 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.

Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.

TSB: ENG228 Telluride (ON) January 2021

Page 3 of 8

3.8 GDI MISFIRE DTC JUDGMENT LOGIC IMPROVEMENT

SUBJECT:

ROM ID INFORMATION TABLE:
Upgrade Event #518
Model

ON
(3.8GDI
Atkinson)

EM

ULEV

TM

IMMO

ECU P/No.

ROM ID
Previous

New

Yes

39122 3LNN0

ONLN8GMS_J0B
ONLN8GMS_J0C
ONLN8GMS_K0A

ONLN8GMS_K0B

No

39132 3LNN0

ONLN8GSS_J0B
ONLN8GSS_J0C
ONLN8GSS_K0A

ONLN8GSS_K0B

AT

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

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

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 operates wirelessly. It is not
necessary to perform the
upgrade via USB cable.

2.

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

Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.

TSB: ENG228 Telluride (ON) January 2021

Page 4 of 8
SUBJECT:

3.

3.8 GDI MISFIRE DTC JUDGMENT LOGIC IMPROVEMENT
Confirm communication with VCI (A) and
then configure the vehicle (B) using the
AUTO VIN (C) feature.

B
A

C
4.

Select ECU Upgrade.

5.

The KDS will check the server for recently
uploaded Events and then automatically
download Upgrade Event #518.

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

6.

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

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.

Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.

TSB: ENG228 Telluride (ON) January 2021

Page 5 of 8
SUBJECT:

7.

3.8 GDI MISFIRE DTC JUDGMENT LOGIC IMPROVEMENT
Select the Engine system under the
System selection menu.

D

Touch ID Check (D) and confirm that the
latest update is available.
Select Upgrade Event #518 and select
Upgrade to continue.

8.

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 VCI-II.
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.

9.

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,
DO
NOT
disconnect
the
KDS/VCI-II.
Contact GIT America Help Desk
at (888) 542-4371 or Techline.

Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.

TSB: ENG228 Telluride (ON) January 2021

Page 6 of 8
SUBJECT:

3.8 GDI MISFIRE DTC JUDGMENT LOGIC IMPROVEMENT

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

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

12. 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.

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

Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.

TSB: ENG228 Telluride (ON) January 2021

Page 7 of 8
SUBJECT:

3.8 GDI MISFIRE DTC JUDGMENT LOGIC IMPROVEMENT

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.

Manual Mode ECU Upgrade Passwords
Menu

Password

ON 3.8GDI ATKINSON ULEV AT -IMMO: 39132-3LNN0
ON 3.8GDI ATKINSON ULEV AT +IMMO/SMK: 39122-3LNN0

2230
3230

1.

Within the ECU Upgrade screen displayed, select Manual Mode.

2.

Select the Engine system under the System selection menu. Select Upgrade Event #518
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.

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.

9.

Start the engine to confirm proper operation of the vehicle.

Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.

TSB: ENG228 Telluride (ON) January 2021

Page 8 of 8
SUBJECT:

3.8 GDI MISFIRE DTC JUDGMENT LOGIC IMPROVEMENT

AFFECTED VEHICLE RANGE:
Model

Production Date Range

Telluride (ON)

January 9, 2019 through May 19, 2020

WARRANTY INFORMATION:
N Code: I3A C Code: ZZ3
Claim
Type

Causal P/N

Qty.

Repair
Description

Labor Op
Code

Op
Time

Replacement
P/N

Qty.

W

39122 3LNN0

0

ECM Logic Improvement

39102F01

0.3
M/H

N/A

0

Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.

TSB: ENG228 Telluride (ON) January 2021

1


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