A

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SUBJECT:

SUBJECT DTC P1A9096 CHECK FOR ICCU & FUSE REPLACEMENT ICCU SOFTWARE UPDATE - (SERVICE CAMPAIGN 997)

C6.

Disconnect the ICCU AC connector (B).

B

C7.

Disconnect the ICCU DC connector (C) and
ICCU signal connector (D).
C
D

C8.

After loosening the mounting bolts, remove the
LDC plus (E).
Tightening Torque:
lb-ft

7

lb-in

84

N.m

9

E

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C9.

DTC P1A9096 CHECK FOR ICCU & FUSE REPLACEMENT ICCU SOFTWARE UPDATE - (SERVICE CAMPAIGN 997)

Disconnect the coolant tube quick connectors
(F).
F

C10. After removing the mounting bolts, remove the
ICCU (G).
Torque Tightening:
lb-ft

19

N.m

25

C10. Install the replacement ICCU and take STUI
photo for upload once installed.
Install in the reverse order of the removal.
Refill the motor cooling system with coolant
and then fully bleed out air using the GDS
diagnostic tool.

STUI

EXAMPLE

Using STUI, take a photo of the new
ICCU with the last 6 digits of the VIN
and the date of repair on a piece of
paper. Upload the photo to STUI.

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SUBJECT:

SUBJECT DTC P1A9096 CHECK FOR ICCU & FUSE REPLACEMENT ICCU SOFTWARE UPDATE - (SERVICE CAMPAIGN 997)

D. ICCU REPLACEMENT FOR THE IONIQ 6 (CE1)
D1.

Shut off the high voltage circuit.

i

Information

Refer to the shop manual:
Battery Control System > High Voltage
Shut-off Procedures

Drain the motor coolant.

i

Information

Refer to the shop manual:
Cooling System > Motor Cooling System
> Coolant

Remove the rear seat cushion cover assembly.

i

Information

Refer to the shop manual:
Body (Interior / Exterior / Electrical) >
Rear Seat > Rear Seat Cushion Cover
Assembly

Remove the rear wheel house trim.

i

Information

Refer to the shop manual:
A

Body (Interior / Exterior / Electrical) >
Interior Trim > Rear Wheel House Trim

Disconnect the V2L signal connector (A).and
V2L extension connector (B).
B

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D2.

DTC P1A9096 CHECK FOR ICCU & FUSE REPLACEMENT ICCU SOFTWARE UPDATE - (SERVICE CAMPAIGN 997)

After removing the bolts and nuts, remove the
upper frame (C).
Torque Tightening:

D3.

lb-ft

19

N.m

25

C

Disconnect the ICCU AC connector (D).

D

D4.

After removing the bolt, Remove the LDC
ground (E).
Torque Tightening:
lb-ft

10

N.m

13

E

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SUBJECT:

SUBJECT DTC P1A9096 CHECK FOR ICCU & FUSE REPLACEMENT ICCU SOFTWARE UPDATE - (SERVICE CAMPAIGN 997)

D5.

Disconnect the ICCU DC connector (F) and
ICCU signal connector (G).
G

F

D6.

After removing the bolt, remove the LDC (+)
(H).
Tightening Torque:

D7.

lb-ft

7

lb-in

84

N.m

9

H

Disconnect the coolant quick connector (I).

I

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DTC P1A9096 CHECK FOR ICCU & FUSE REPLACEMENT ICCU SOFTWARE UPDATE - (SERVICE CAMPAIGN 997)

SUBJECT:

D8.

After removing the bolt, remove the ICCU (J).
J

Torque Tightening:

D9.

lb-ft

19

N.m

25

Install the replacement ICCU and take STUI
photo for upload once installed.
Install in the reverse order of the removal.
Refill the motor cooling system with coolant
and then fully bleed out air using the GDS
diagnostic tool.

STUI

EXAMPLE

Using STUI, take a photo of the new
ICCU with the last 6 digits of the VIN
and the date of repair on a piece of
paper. Upload the photo to STUI.

TSB #: 23-01-060H

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SUBJECT:

SUBJECT DTC P1A9096 CHECK FOR ICCU & FUSE REPLACEMENT ICCU SOFTWARE UPDATE - (SERVICE CAMPAIGN 997)

E. EV BATTERY ICCU FUSE INSPECTION (Only applies after ICCU was replaced)

CAUTION
ONLY PERFORM THIS SECTION AFTER REPLACING THE ICCU.
Do not install fuse before the ICCU. DTC P1B77 EV Battery PRA damage will occur.
E1.

Shut off the high voltage circuit and wait 5
minutes for capacitors to discharge.

i

Information

Refer to the shop manual:
Battery Control System > High Voltage
Shut-off Procedures

E2.

Remove the rear under cover.

i

Information

Refer to the shop manual:
Motor and Reduction Gear System >
Rear Motor and Reduction Gear System
> Rear Under Cover
E3.

E4.

Disconnect the ICCU high voltage connector
(A).

A

Remove the ICCU high voltage connector
assembly cover (B).
Tightening Torque:
lb-ft

8

lb-in

96

N.m

10
B

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E5.

DTC P1A9096 CHECK FOR ICCU & FUSE REPLACEMENT ICCU SOFTWARE UPDATE - (SERVICE CAMPAIGN 997)

Remove the ICCU fuse cover (C).

C

E6.

Using a commonly available multimeter. Set at
the ohmmeter measuring mode and inspect
the fuse condition by checking the fuse’s
resistance value:
➢ Fuse is Good: Less than 1.0 ohm.
DO NOT REPLACE THE FUSE.
Do not follow the remaining steps to
replace the fuse.

➢ Fuse is Bad (Blown/Open):
Resistance greater than 1.0 ohm or OL.

CAUTION
ONLY REPLACE THE FUSE IF
FOUND TO BE BAD
(BLOWN/OPEN).
It can be difficult or with
complication removing the fuse,
which may include the nuts holding
the fuse holder falling back into the
battery.

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SUBJECT DTC P1A9096 CHECK FOR ICCU & FUSE REPLACEMENT ICCU SOFTWARE UPDATE - (SERVICE CAMPAIGN 997)

E7.

Remove the ICCU fuse (D).

CAUTION
Avoid using power driver to remove and
install the bolts. Use a hand tool only.
There can be difficulty removing the
fuse, which may include the nuts of the
at the back of the fuse holder falling
back into the battery.

D

See the below special instruction
should this occur.
E8.

Install the supplied new ICCU fuse.
Install back in the reverse order of removal.

SPECIAL INSTRUCTION: Only applies when ICCU Fuse rear nut(s) falls back into the battery.
1. Remove:
o 6 qty. 10mm bolts (Green marked),
o 4 qty. bolts by Allen wrench (Red marked).
2. Push in bottom area. Pull out top area.
3. Reach in and grab the nut behind the plate on the
bottom surface.
4. Hold the nut at the back side.
5. Install the fuse bolt at the place that the nut had
dropped.
6. Install all the other bolts in reverse order of
removal.
7. Install the rest of the fuse bolts.
NOTE: Contact Techline if the above procedure did
not resolve a dropped nut problem.

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