Check MDPS ECU/VSM CAN line.
Check communication status
with GDS.
Check for DTC C1259.
If present, replace the column and h
ousing assembly.

If DTC returns and MDPS is
inoperable, replace MDPS ECU.
If DTC returns and MDPS
operation is normal, continue
investigation into wiring issues.

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

TSB: CHA084 (Rev 7) Multiple Models November 2018

Page 5 of 9
SUBJECT:

REPLACEMENT OF C-MDPS MOTOR, ECU,
WORM GEAR ASSEMBLY AND/OR STEERING COLUMN HOUSING

Replacement Procedure for Worm Gear Assembly (Mobis Only):
1. Remove the MDPS column and housing
by referring to the “Steering System →
Motor Driven Power Steering → MDPS
Column and Housing → Repair
Procedures” chapter in the applicable
A
Shop Manual on KGIS.
Note: Be sure mark the steering column
shaft to the intermediate shaft for reassembly purposes.
*Refer to Clockspring Warning on page 1.

2.

Using the worm shaft plug SST (B) loosen
the worm shaft nut (C) and remove the
worm shaft.

C

Torque Specifications for nut (C) Refer
to page 8 for applicable model:
0K563 T9100FFF (34.9mm): 27.5 – 34.7
lb.ft (37.2 – 47.0 N.m (3.8 – 4.8 kgf·m)
0K563 Q2100FFF (42.0mm): 51.7 – 59.0
lb.ft (70.0 – 80.0 N.m (7.2 – 8.2 kgf.m)

B

0K563 D6100FFF (44.9mm): 81.2 –
103.2 lb.ft (110.0 – 140.0 N.m (11.3 –
14.3 kgf.m)
3.

Loosen the 5mm hex plug (D) and then
remove the anti-rattle plug assembly.
Torque Specifications for plug (D):
7.3 - 9.4 lb.ft (9.8 - 12.8 N.m,
1.0 - 1.3 kgf.m)

D

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

TSB: CHA084 (Rev 7) Multiple Models November 2018

Page 6 of 9
SUBJECT:

4.

REPLACEMENT OF C-MDPS MOTOR, ECU,
WORM GEAR ASSEMBLY AND/OR STEERING COLUMN HOUSING

Using a set of vise grips, remove the
worm shaft assembly (E).
Note: Reuse the flexible coupling unless
there is visible damage or wear. Replace
as needed.

E

5.

Apply grease to worm gear shaft (E)
portion only (OK). Grease should not be
applied to the bearing (NG).
Note: Grease is included (20g) with worm
gear assembly.

E

6.

Install the new worm shaft assembly (E)
in the reverse order of removal.

7.

Using a torque wrench and SST (B),
tighten the shaft nut (C).
Refer to torque specifications on step 2.

8.

Re-install all removed parts in the reverse
order of removal.
Note: Be sure to follow the SAS
Calibration, EPS Type Recognition as
outlined on KGIS.

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

TSB: CHA084 (Rev 7) Multiple Models November 2018

Page 7 of 9
SUBJECT:

REPLACEMENT OF C-MDPS MOTOR, ECU,
WORM GEAR ASSEMBLY AND/OR STEERING COLUMN HOUSING

Replacement Procedure for MDPS Motor:
1. Replace the MDPS motor by referring to
the “Steering System → Motor Driven
Power Steering → MDPS Motor → Repair
Procedures” chapter in the applicable
Shop Manual on KGIS.
Note: Be sure mark the steering column
shaft to the intermediate shaft for reassembly purposes if removing the
steering column and housing assembly.

Replacement Procedure for MDPS ECU:
1. Replace the MDPS ECU by referring to
the “Steering System → Motor Driven
Power Steering → MDPS ECU → Repair
Procedures” chapter in the applicable
Shop Manual on KGIS.
Note: Be sure mark the steering column
shaft to the intermediate shaft for reassembly purposes if removing the
steering column and housing assembly.

Replacement Procedure for Steering Column & Housing:
1. Replace the MDPS column and housing
by referring to the “Steering System →
Motor Driven Power Steering → MDPS
Column and Housing → Repair
Procedures” chapter in the applicable
Shop Manual on KGIS.
Note: Be sure mark the steering column
shaft to the intermediate shaft for reassembly purposes.
*Refer to Clockspring Warning on page 1.

 IMPORTANT
Ensure all steps are closely followed within the Service information as additional
KDS-related procedures are required. Ensure the Steering Angle Sensor (SAS) is
calibrated and there are no DTCs after replacement of the MDPS Motor and/or ECU.
Verify proper operation of the steering system and vehicle.
Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.

TSB: CHA084 (Rev 7) Multiple Models November 2018

Page 8 of 9
SUBJECT:

REPLACEMENT OF C-MDPS MOTOR, ECU,
WORM GEAR ASSEMBLY AND/OR STEERING COLUMN HOUSING

AFFECTED VEHICLE RANGE:
Model

MDPS Supplier

Model Year Range

Mobis

All Applicable Models
2010MY~
with C-MDPS

Soul (AM), Optima (QF, TF, TF HEV),
Cadenza (VG), and Forte (YD, YDm)
Forte (BD, BDm, YD, YDm), Niro (DE, DE HEV/PHEV/
EV), Optima (JF/JFa, JF HEV/PHEV) Soul (PS,
PS EV), Sorento (UMa) and Cadenza (YG)
Rio (UB, SC), Sportage (SL, QL)
and Sorento (XMa)

Mando

REQUIRED PART:
Part Name

Part Number

C-MDPS Motor

Refer to EPC

C-MDPS ECU

Refer to EPC

Steering Column Housing

Refer to EPC

Figure

REQUIRED TOOL AND WORM GEAR P/N (INCLUDES GREASE):
Model/ Model Year

MDPS Assy

2017-2018 YD(m)
2018-2019 PS/PS EV
2017-2018 JFa/UMa
2017 JF HEV

Refer to EPC

2019-2020 JFa, UMa
2018-2020 JF HEV
2017-2020 YG
2017 DE
See Note Below*
2019-2020 BD(m)
2017 DE
See Note Below*
2018-2020 DE/DE EV/
DE PHEV

Worm Shaft Kit Part
Number

SST Part Number
(Size)

56351 B3AAA FFF

0K563 T9100FFF
(34.9mm)

0K563 D6100FFF
(44.9mm)

56351 F2AAAFFF

Refer to EPC
56310-G5101
56310-G5301

(NonIntegrated)

56351 C5AAA FFF
56351 F6AAAFFF

56310-G5100
56310-G5300

Image

0K563 Q2100FFF
(42mm)

(Integrated)

56351 G3AAAFFF

Refer to EPC

*Note: DE requires the reference to MDPS assembly to ensure the proper part is installed;
Integrated vs. Non-Integrated.

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

TSB: CHA084 (Rev 7) Multiple Models November 2018

Page 9 of 9

REPLACEMENT OF C-MDPS MOTOR, ECU,
WORM GEAR ASSEMBLY AND/OR STEERING COLUMN HOUSING

SUBJECT:

WARRANTY INFORMATION:
N Code: D61 C Code: ZZ4

Replacement
P/N

Qty.

N/A

0

Op
Time

Replacement
P/N

Qty.

PS, PS
EV, YD

1.4
M/H

56351
B3AAAFFF

JF, JF
HEV, JFa

1.3
M/H

56351
C5AAAFFF

1.1
M/H

56351
F2AAAFFF

Model

All Models
Listed

Claim
Type

W

Causal
P/N

Refer to
EPC

Qty.

1

Repair
Description

Labor Op
Code

Op
Time

C-MDPS Motor
Replacement

56330R00
56331R00

Refer
to
LTS

C-MDPS ECU
Replacement

56345R00

Refer
to
LTS

Steering Column
Housing
Replacement

56391R00

Refer
to
LTS

Labor Op
Code

WARRANTY INFORMATION (WORM GEAR):
N Code: Q55 C Code: ZZ1
Model

Claim
Type

Causal
P/N

Qty.

DE

JF, JF
HEV, JFa,
YG

W

*Refer to
EPC

BD, BDm,
DE, DE
PHEV, DE
EV

0

Repair
Description

C-MDPS
Worm Gear
Replacement
(for applicable
models only)

56351F01

1
1.3
M/H

56351
F6AAAFFF

1.1
M/H

56351
G3AAAFFF

1.2
M/H

UMa

56351
C5AAAFFF
56351
F6AAAFFF

*Note: Refer to EPC for Steering Column and Housing Assembly.

WARNING*
To prevent personal injury and damage to the clockspring, keep the steering wheel in the
straight-ahead position whenever disconnecting any portion of the steering column.
Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.

TSB: CHA084 (Rev 7) Multiple Models November 2018