ICCU & FUSE REPLACEMENT (SC327Y)

SUBJECT:

ICCU
9.

Disconnect the front coolant green hose
connector (H).

H

Front Right Side of Battery
10.

Using shop air, blow out the ICCU coolant from
the blue rear disconnected coolant hose.

TECH TIP
Wearing a rubber glove, create a
tight seal using hand when blowing
into the blue hose connector end.
Note: Use a drain pan to collect the coolant
fluid from the front disconnected hose.

11.

Remove the rear seat assembly (I) by referring
to “Body Interior and Exterior → Rear Seat
Assembly → Removal and Installation” in the
applicable Shop Manual on KGIS.

I

12.

Remove the left (LH) and right (RH) side rear
door scuff trim (J).

J

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

TSB: SC327Y EV6, EV6 GT (CV) December 2024

Page 8 of 11

ICCU & FUSE REPLACEMENT (SC327Y)

SUBJECT:

13.

Remove both (LH and RH) the rear seat belt
lower anchor retaing bolts (K).

Tightening torque for bolt (N):
29.7 – 44.1 lb.ft (40.2 – 59.8 N.m)

K

14.

Detach the two (2) folding lever cables (L) from
the floor carpet.

L

15.

Disconnect the LDC cable by loosening the
retaining bolt (M).

16.

Remove the two (2) ICCU retaining bolts (N).

N

Tightening torque for bolt (P):
5.8 – 8.7 lb.ft (7.8 – 11.8 N.m)

M

17.

Disconnect the combo charge inlet wire
harness connector (O).

O

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

TSB: SC327Y EV6, EV6 GT (CV) December 2024

Page 9 of 11

ICCU & FUSE REPLACEMENT (SC327Y)

SUBJECT:

ICCU

18.

Disconnect the following:
•

HV power connector (P)

•

ICCU connector (Q)

•

LDC positive (+) cable (R)

Q
R

Tightening torque for bolt (U):

P

5.8 – 7.2 lb.ft (7.8 – 9.8 N.m)

+
19.

Remove the two (2) ICCU assembly retaining
bolts (S).

Tightening torque for bolts (V):
5.8 – 8.7 lb.ft (7.8 – 11.8 N.m)

S
+
20.

Disconnect the two (2) ICCU coolant hoses (T)
from the ICCU assembly.
Note: Place an absorbing towel to collect an
remaining

coolant

fluid

residue

when

detaching the coolant hoses.

T
+

21.

Replace the ICCU assembly (U) with a new part
in the reverse order or removal.
•

If the new ICCU part IS NOT marked
with an “O”, take a KDS Warranty
Attachment photo and submit with

U

claim. The software will need to be
installed after replacement.
•

If the ICCU is marked with an “O”, the
software was pre-installed.

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

TSB: SC327Y EV6, EV6 GT (CV) December 2024

Page 10 of 11

ICCU & FUSE REPLACEMENT (SC327Y)

SUBJECT:

22.

Remove the four (4) ICCU fuse service cover
retaining bolts (V).

Tightening torque for bolts (F):

V

5.8 – 8.7 lb.ft (7.8 – 11.8 N.m)

V

23.

Remove the three (3) ICCU fuse cover
retaining bolts (W).

Tightening torque for T3 hex bolts (G):
22.6 – 29.5 lb.in (2.5 – 3.3 N.m)

W

24.

Carefully and gently remove the two (2) ICCU
fuse (X) retaining allen head bolts (Y) using a
hand tool and replace the ICCU fuse (X) with a
new part.

Y

Tightening torque for T5 hex bolts (H):
39.1 -47.7 lb.in (3.3 – 4.0 N.m)

X
CAUTION
DO NOT use a power tool to remove

these bolts. There are two (2) securing
nuts inside the battery. If the nuts fall
inside the battery, additional time will
be required to extract them.

25.

Refill the coolant by by referring to “Cooling System → Coolant → Motor Coolant (Coolant Refilling
and Air Bleeding” in the applicable Shop Manual on KGIS.

26.

Confirm normal vehicle operation.

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

TSB: SC327Y EV6, EV6 GT (CV) December 2024

Page 11 of 11

ICCU & FUSE REPLACEMENT (SC327Y)

SUBJECT:

ICCU
AFFECTED VEHICLE RANGE:
Model

Production Date Range

EV6, EV6 (CV)

November 17, 2021 to July 22, 2024

REQUIRED TOOL:
Tool Name

Figure

Comments

KDS

Kia Diagnostic System

REQUIRED PART:
Part Name

Part Number

Figure

Qty.

ICCU Assembly

36400 1XFA0QQK

ICCU Fuse

375F2 GI040QQK

N/A

1

Coolant (Pink)

UM020 CH263

N/A

1

1

Note: The replacement QQK part numbers will require a VIN entry for parts ordering. DO NOT order these parts
for stocking purposes, related to this Campaign. Supply is very limited. Until supply stabilizes, please confirm part
availability before scheduling customers. Please be sure to expedite warranty claim filing.

WARRANTY INFORMATION:
N Code: N99 C Code: C99
Claim
Type

Causal P/N

Qty.

Repair

Labor Op

Op

Replacement

Description

Code

Time

P/N
36400 1XFA0QQK

(SC327Y)
ICCU + Fuse Replacement +
ICCU Software Upgrade

241195R3*

2.1
M/H

(Non-“O” marked)
R

36400 1XFA0

Qty.

375F2 GI040QQK

1

UM020 CH263

0
36400 1XFA0QQK

(SC327Y)
ICCU + Fuse Replacement
(“O” marked)

241195R4

1.9
M/H

375F2 GI040QQK

1

UM020 CH263

Note: Refer to Warranty Bulletin 2024-69 for claim submission procedures. A Vehicle Diagnosis Number (VDN)
must be created prior to ICCU replacement. *A KDS Warranty Attachment photo of the ICCU NOT marked with an
“O” MUST be attached to the claim using KDS Warranty Attachment type ‘XX – Other’ to claim labor op code
241195R3. When necessary, manually enter sublet code ‘X2’ for reimbursement of one roundtrip rideshare expense
or up to three (3) days of rental for ICCU replacement. Attach supporting documentation.

 NOTICE
VIN inquiry data for this repair is provided for tracking purposes only. Kia retailers should reference
SC327Y when accessing the KDealer+ system.
Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.

TSB: SC327Y EV6, EV6 GT (CV) December 2024