22-01-076H-1

GROUP
CAMPAIGN
DATE
Technical Service Bulletin
SUBJECT:
OCTOBER,
2022
NUMBER
22-01-076H-1
MODEL(S)
Elantra
(CN7, CN7a)
Elantra Hybrid
(CN7 HEV)
ICU (INTEGRATED CENTRAL CONTROL UNIT) SOFTWARE UPDATE
(SERVICE CAMPAIGN T8T)
This TSB supersedes TSB# 22-01-076H to include ROM ID 4.01 for Elantra (CN7a).
 IMPORTANT
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.
Access the “Vehicle Information" screen (VIS) via WEBDCS to identify open campaigns.
Description: Some 2021 ~ 2022MY Elantra (CN7, CN7a, CN7 HEV) vehicles may exhibit a condition
with multiple warning lights displayed on the instrument cluster and various symptoms; multiple DTCs
(Diagnostic Trouble Code), reduction in power steering assist, and not able to shift out of Park. Possible
DTCs set are:
•
C181287 – CAN Time-out Gateway
•
C181208 – CAN Time-out Gateway
•
C180581 – LKAS CAN Signal Error
•
C181887 – CAN Time-out BCA
•
B109052 – TCU Missing Error
This bulletin provides the service procedure to update the ICU (Integrated Central Control Unit) software
to resolve the conditions stated above.
Applicable Vehicles:
Certain 2021MY Elantra (CN7) vehicles produced from 9/12/2020 – 6/01/2021*.
Certain 2021~22MY Elantra (CN7a) vehicles produced from 9/25/2020 – 9/27/2021**.
Certain 2021~22MY Elantra Hybrid (CN7 HEV) vehicles produced from 12/15/2020 – 8/11/2021*.
*VIN starting with KMH
**VIN starting with 5NP
Circulate To: General Manager, Service Manager, Parts Manager, Warranty Manager, Service
Advisors, Technicians, Body Shop Manager, Fleet Repair
SUBJECT:
ICU (INTEGRATED CENTRAL CONTROL UNIT) SOFTWARE UPDATE
(SERVICE CAMPAIGN T8T)
Warranty Information:
MODEL
OP. CODE OPERATION OP. TIME
Elantra/ Elantra
Hybrid
(CN7/CN7 HEV)
20D073R0 ICU Upgrade
Elantra (CN7a)
20D073R1 ICU Upgrade
CAUSAL PART
NATURE CAUSE
0.3 M/H
91951-AA010
(CN7)
91950-BY110
(CN7 HEV)
I14
ZZ3
0.3 M/H
91950-AB060
I14
ZZ3
Note 1: Submit claim on Campaign Claim Entry Screen
Note 2: If a part that is not covered by this campaign is found in need of replacement while performing
this campaign 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.
ICU SOFTWARE UPDATE PROCEDURE
NOTICE
Check if the vehicle’s software version is affected:
• Check the current version of the ICU ROM ID and compare it to the ROM ID information table
listed below before attempting to perform the software update.
NOTICE
You must initially perform the GDS ICU Update in Auto Mode.
• Refer to the TSB 15-GI-001 for the tablet-based Mobile GDS ECU update procedures.
• If the ICU update starts but then fails in Auto Mode, perform the update in Manual Mode to
recover. Go to page 9 to complete the update in Manual Mode.
NOTICE
•
In the ECU Upgrade screen, select ICU as the system to update.
TSB #: 22-01-076H-1
Page 2 of 13
SUBJECT:
ICU (INTEGRATED CENTRAL CONTROL UNIT) SOFTWARE UPDATE
(SERVICE CAMPAIGN T8T)
GDS INFORMATION:
EVENT INFORMATION
EVENT DESCRIPTION
MODEL
Elantra (CN7)
"851.CN7 ICU LOGIC IMPROVEMENT"
Elantra (CN7a)
"852.CN7a ICU LOGIC IMPROVEMENT"
Elantra Hybrid
(CN7 HEV)
"864.CN7 HEV ICU LOGIC IMPROVEMENT"
ROM ID INFORMATION TABLE:
MODEL
SYSTEM
Elantra
(CN7)
Elantra
(CN7a)
ICU P/N
91950-AA010 ~ 91950-AA990
91951-AA010 ~ 91951-AA590
ICU
Elantra
Hybrid
(CN7 HEV)
91950-AB000 ~ 91950-AB060
91950-BY010 ~91950-BY240
OLD
1.02
1.03
1.04
1.05
4.01
4.02
4.03
3.03
3.04
3.05
3.06
ROM ID
NEW
1.06
4.04
3.07
MANUAL MODE PASSWORD INFORMATION TABLE:
Event #
#851 – CN7
#852 – CN7a
#864 – CN7 HEV
MENU
CN7 ICU 91950/91951-AAXXX
CN7a ICU 91950 - ABXXX
CN7 HEV ICU 91950-BY010~BY240
TSB #: 22-01-076H-1
PASSWORD
5051
5060
5019
Page 3 of 13
SUBJECT:
ICU (INTEGRATED CENTRAL CONTROL UNIT) SOFTWARE UPDATE
(SERVICE CAMPAIGN T8T)
SERVICE PROCEDURE:
!
CAUTION
Cautions During Control Unit Upgrade
• Confirm the vehicle's battery is above 12 volts. If the vehicle has been in storage for
days, run the engine to assure an adequate battery charge state for reliable upgrade
results.
• Turn off all lamps (Do not leave head lamp switch in auto mode) and all accessories
(heater, A/C, blower, radio, seat warmer, defroster, etc.); do not allow the battery to be
discharged during upgrade.
• Perform upgrade with the ignition switch in the ON position.
• Be careful not to disconnect any cables connected to the vehicle or scan tool during
upgrade.
• Do not start the engine during upgrade.
• Do not turn off the ignition switch during upgrade.
• Do not touch the systems buttons (like ‘BACK’, ‘HOME’, ‘etc.’) while performing upgrade.
■ CONTROL UNIT UPGRADE PROCEDURE USING THE GDS-Mobile
1. GDS (Global Diagnostic System)-Mobile INSTALLATION PROCEDURE
1.
Connect the VCI-II into the vehicle's
DLC connector under the driver side
instrument panel and check to turn the
VCI-II on.
Before starting the update, make
certain that the battery of the Table PC
is sufficiently charged.
NOTICE
ECU upgrade function on GDSMobile is basically operating in
wireless communication and Wi-Fi
direct. Also, it is possible to be
performing via USB cable between
Tablet PC and VCI-II.
NOTICE
You must initially perform GDS-M ICU Update in Auto Mode.
If the ICU Update starts but then fails in Auto Mode, perform the update in Manual Mode
to recover.
TSB #: 22-01-076H-1
Page 4 of 13
SUBJECT:
ICU (INTEGRATED CENTRAL CONTROL UNIT) SOFTWARE UPDATE
(SERVICE CAMPAIGN T8T)
2. AUTOMATIC UPGRADE PROCEDURE USING THE GDS-MOBILE
2.
Select ECU Upgrade on the initial screen
after entering the vehicle information and
select Auto Mode.
3.
Select ICU system.
TSB #: 22-01-076H-1
Page 5 of 13
SUBJECT:
4.
ICU (INTEGRATED CENTRAL CONTROL UNIT) SOFTWARE UPDATE
(SERVICE CAMPAIGN T8T)
Select ID Check and GDS will read the
current ROM ID in vehicle and check the
newest upgrade event.
NOTICE
Check the current version of the ICU
ROM ID and compare it to the ROM ID
Information Table before attempting to
perform the software update.
5.
Select Upgrade after confirming correct
Event is selected.
CN7: 851.CN7 ICU LOGIC IMPROVEMENT
CN7a: 852.CN7a ICU LOGIC
IMPROVEMENT
CN7 HEV: 864.CN7 HEV ICU LOGIC
IMPROVEMENT
6.
The vehicle battery voltage is checked to
make sure it is at least 12 voltages to assure
reliable upgrade results. Click OK if the
results indicate voltage is ok.
NOTICE
If battery voltage is below 12 voltages
as below, click BACK and then run the
engine to assure an adequate battery
charge state for reliable upgrade results.
TSB #: 22-01-076H-1
Page 6 of 13
SUBJECT:
7.
ICU (INTEGRATED CENTRAL CONTROL UNIT) SOFTWARE UPDATE
(SERVICE CAMPAIGN T8T)
Upgrade (1/2) will begin, and the progress of
the upgrade will appear on the bar graph.
Upgrade (1/2) will occur until 100% is
reached on the bar graph.
8.
Upgrade (2/2) will begin, and the progress of
the upgrade will appear in the bar graph.
Upgrade (2/2) will occur until 100% is
reached on the bar graph.
When upgrade reaches 100%, follow GDS
instructions to “Turn IG off for 10 seconds
and then back on. Click the OK button to
continue.”
TSB #: 22-01-076H-1
Page 7 of 13
SUBJECT:
ICU (INTEGRATED CENTRAL CONTROL UNIT) SOFTWARE UPDATE
(SERVICE CAMPAIGN T8T)
9.
Click OK on the final screen, which indicates
upgrade is complete.
10.
After upgrade, remove power connector of
indoor fuse box, and reconnect it after 5
seconds
Check if any incidental Diagnostic Trouble
Codes (DTC) have been created by the
upgrade and clear the DTC(s) present.
Start the engine to confirm proper operation
of the vehicle.
TSB #: 22-01-076H-1
Page 8 of 13
SUBJECT:
ICU (INTEGRATED CENTRAL CONTROL UNIT) SOFTWARE UPDATE
(SERVICE CAMPAIGN T8T)
3. MANUAL UPGRADE PROCEDURE USING THE GDS-MOBILE
NOTE:
• The manual upgrade should be performed only when the automatic upgrade fails.
• If automatic upgrade fails, turn the ignition key off for about 10 seconds, place it back in the on
position to reset the control unit before performing manual upgrade.
11.
Select ECU Upgrade on the initial screen
after entering the vehicle information and
select Manual Mode.
TSB #: 22-01-076H-1
Page 9 of 13
SUBJECT:
ICU (INTEGRATED CENTRAL CONTROL UNIT) SOFTWARE UPDATE
(SERVICE CAMPAIGN T8T)
12.
Select ICU system.
13.
Check that the newest event with reference
to the above ROM ID Information Table is
selected and tab Upgrade.
CN7: 851.CN7 ICU LOGIC IMPROVEMENT
CN7a: 852.CN7a ICU LOGIC
IMPROVEMENT
CN7 HEV: 864.CN7 HEV ICU LOGIC
IMPROVEMENT
14.
Enter the password from the below table then touch OK.
#851 - CN7
MENU
CN7 ICU 91950/51 -AAXXX
#852 - CN7a
CN7a ICU 91950 - ABXXX
#864 - CN7 HEV
MENU
MENU
CN7 HEV ICU 91950-BY010~BY240
TSB #: 22-01-076H-1
PASSWORD
5051
PASSWORD
5060
PASSWORD
5019
Page 10 of 13
SUBJECT:
15.
ICU (INTEGRATED CENTRAL CONTROL UNIT) SOFTWARE UPDATE
(SERVICE CAMPAIGN T8T)
The vehicle battery voltage is checked to
make sure it is at least 12 volts to ensure
reliable upgrade results. Click OK if the
results indicate voltage is OK.
NOTICE
If battery voltage is below 12
voltages as below, click BACK and
then run the engine to assure an
adequate battery charge state for
reliable upgrade results.
16.
Upgrade (1/2) will begin, and the progress of
the upgrade will appear on the bar graph.
Upgrade (1/2) will occur until 100% is
reached on the bar graph.
TSB #: 22-01-076H-1
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SUBJECT:
17.
ICU (INTEGRATED CENTRAL CONTROL UNIT) SOFTWARE UPDATE
(SERVICE CAMPAIGN T8T)
Upgrade (2/2) will begin, and the progress of
the upgrade will appear in the bar graph.
Upgrade (2/2) will occur until 100% is
reached on the bar graph.
When upgrade reaches 100%, follow GDS
instructions to “Turn IG off for 10 seconds
and then back on. Click the OK button to
continue.”
18.
Click OK on the final screen, which indicates
upgrade is complete.
NOTICE
Check the ICU ROM ID and
compare it to the ROM ID
Information Table to confirm latest
ROM ID was updated.
TSB #: 22-01-076H-1
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SUBJECT:
19.
ICU (INTEGRATED CENTRAL CONTROL UNIT) SOFTWARE UPDATE
(SERVICE CAMPAIGN T8T)
After upgrade, remove power connector of
indoor fuse box, and reconnect it after 5
seconds
Check if any incidental Diagnostic Trouble
Codes (DTC) have been created by the
upgrade and clear the DTC(s) present.
Start the engine to confirm proper operation
of the vehicle.
TSB #: 22-01-076H-1
Page 13 of 13