NHTSA ID Number: 11006103
Manufacturer Communication Number: 24-EV-004G
TSB/Document Date: 2024-08-07
Summary
This bulletin provides important special service instructions to properly repair a vehicle that has been diagnosed to require an Integrated Charge Control Unit (ICCU) replacement, such as required for DTC P1A9096 DC to DC related charging concern or for inoperative AC charging. • The ICCU fuse accessible from a rear side panel of the EV Battery, should NEVER be replaced by itself prior to receiving an ICCU replacement part. • The ICCU fuse should be replaced at the same time as replacing the ICCU part. o The ICCU fuse function is to protect the EV Battery from a damaged ICCU. o DTC P1B77 Power Relay Assy (PRA) damage in the EV Battery can occur when an ICCU fuse is first replaced without also replacing the ICCU together. o Vehicles with P1B77 require Techline approval for field staff involved EV Battery repair and can result in significant additional delay for customers. o Wait to receive ICCU replacement part first before also replacing the ICCU fuse on the rear side of the EV battery. This bulletin also covers how to handle a situation when the nut(s) at the rear of the ICCU fuse falls back into the battery.
EV SYSTEM
24-EV-004G
JULY 2024
SEE BELOW
ICCU SPECIAL SERVICE INSTRUCTIONS
Description: This bulletin provides important special service instructions to properly repair a vehicle
that has been diagnosed to require an Integrated Charge Control Unit (ICCU) replacement, such as
required for DTC P1A9096 DC to DC related charging concern or for inoperative AC charging.
•
The ICCU fuse accessible from a rear side panel of the EV Battery, should NEVER be
replaced by itself prior to receiving an ICCU replacement part.
•
The ICCU fuse should be replaced at the same time as replacing the ICCU part.
o The ICCU fuse function is to protect the EV Battery from a damaged ICCU.
o DTC P1B77 Power Relay Assy (PRA) damage in the EV Battery can occur when an ICCU fuse
is first replaced without also replacing the ICCU together.
o Vehicles with P1B77 require Techline approval for field staff involved EV Battery repair and
can result in significant additional delay for customers.
o Wait to receive ICCU replacement part first before also replacing the ICCU fuse on the rear
side of the EV battery.
This bulletin also covers how to handle a situation when the nut(s) at the rear of the ICCU fuse falls
back into the battery.
Applicable Vehicles:
• 2023-2024MY GV60 (JW1 EV)
• 2023-2024MY GV70 Electrified (JK1A EV)
• 2023-2024MY G80 Electrified (RG3 EV)
NOTICE
To avoid any potential damage to Genesis
EVs, Genesis EV repairs can only be performed by EV
certified Genesis retailers.
Warranty Information: Normal Warranty applies.
Circulate To: General Manager, Service Manager, Parts Manager, Warranty Manager, Service
Advisors, Technicians, Body Shop Manager, Fleet Repair
Service Procedure:
1.
Shut off the high-voltage circuit by pulling out
the service interlock connector (A) and waiting
at least 5 minutes for capacitors to discharge
voltage.
A
Refer to Shop Manual:
• Battery Control System > High
Voltage Shut-off procedures
2.
Remove and replace the ICCU assembly (B)
under the rear seat.
B
Refer to Shop Manual:
• Battery Control System > High
Voltage Charging System >
Integrated Charge Control Unit
(ICCU) > Removal / Installation
1.
Remove the rear under cover (A).
Refer to Shop Manual:
• Motor and Reduction Gear System >
Rear Motor and Reduction Gear
System > Rear Under Cover >
Removal and Installation
TSB #: 24-EV-004G
A
Page 2 of 5
SUBJECT:
2.
Disconnect the ICCU high-voltage connector
(B) from the rear side of the EV battery.
B
3.
Remove the ICCU high-voltage connector
assembly cover (C).
Tightening Torque:
lb-ft
7.4
lb-in
88.5
N.m
10.0
C
4.
Remove the ICCU fuse cover (D).
Tightening Torque:
D
TSB #: 24-EV-004G
Page 3 of 5
SUBJECT:
5.
Remove ICCU fuse (E).
NOTICE
Be very careful when removing or
reinstalling the bolts that hold the fuse in
place. Remove/install slowly and
carefully by hand tool.
The nut(s) on the rear side of the fuse
have been known to sometimes fall back
into the battery.
E
See SPECIAL INSTRUCTION on next
page if the nut(s) fall into the battery.
6.
Inspect the fuse condition for a blown condition
with an ohmmeter for open circuit.
7.
If open circuit is confirmed, replace with the
supplied ICCU fuse.
8.
Install in the reverse order of removal.
Tightening Torque for Bolts:
lb-ft
7.4
lb-in
88.5
N.m
10.0
TSB #: 24-EV-004G
Page 4 of 5
SUBJECT:
1.
Remove:
•
6 qty. 10mm bolts (circled in Green),
•
4 qty. bolts by Allen wrench (circled in
Red).
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.
TSB #: 24-EV-004G
Page 5 of 5
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TSB/Document ID: 24-EV-004G
Replacement Service Bulletin Number:
MFR Communication Date: 2024-07-12
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System:
MFR Component Subsystem:
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