TSBCHA074_R2

GROUP
CHA
MODEL
Multiple Models
NUMBER
074 (Rev 2, 04/29/2019)
DATE
August 2016
TECHNICAL SERVICE BULLETIN
MDPS FLEXIBLE COUPLING REPLACEMENT
SUBJECT:
 NOTICE
This bulletin has been revised to include additional information. New/revised
sections of this bulletin are indicated by a black bar in the margin area.
This bulletin is issued to provide information about the replacement of the flexible coupling in
the MDPS motor of some vehicles which might experience a “knock” noise originating from the
MDPS, when moving the steering wheel to right or left when the vehicle is stopped. This is
caused by premature wear of the flexible coupling in the MDPS motor. If any “knock” noise from
the MDPS occurs, replace the affected flexible coupling only with an improved one, following
the Replacement Procedure below.
Please note that Replacement Procedures 1, 2 and 3, as shown below, vary depending on the
model. Calibration Procedures only apply to Replacement Procedures 1 and 3. For reference,
there are 2 types of torque sensors to detect revolution and torque in the MDPS system. One is
the optical type which detects when light is transmitted and the other is the magnetic type which
detects changes in polarity.
Replacement
Part
Procedure
Model/Year
Applicable Production Range
1
Forte (TD) / 2012~2013
From Jun. 1, 2011 ~ Mar. 18, 2013
Soul (AM) / 2010~2013
From Jan. 8, 2009 ~ Oct. 2, 2013
Forte (YD) / 2014
From Nov. 7, 2012 ~ Apr. 26, 2014
Cadenza (VG) / 2014
From Feb. 1, 2013 ~ Apr. 19, 2014
2
3
File Under: 
Circulate To:
x General Manager

x Service Advisor(s)

x Service Manager

x Parts Manager

x Fleet Repair
x Technician(s) 
x Body Shop Manager 

Page 2 of 15
SUBJECT:
MDPS FLEXIBLE COUPLING REPLACEMENT
Replacement Procedure 1: This procedure applies to Forte (TD) models.
1. Remove the MDPS unit by referring to the applicable procedure on KGIS.
 NOTICE
Before removing the MDPS unit,
make sure to align the steering
wheel to the center position.
2.
A
Locate the steering column guide
bracket (A) and remove four (4) Torx®
head screws (B/C) securing it to the
steering column.
Tightening torque:
B: 3.6 lb.ft (4.9 Nm)
C: 2.2 lb.ft (2.9 Nm
B
3.
C
Lift the steering column guide bracket
(D) and remove the plastic spacer
(E). Retain all parts as they will be
reused.
D
E
TSB: CHA074 (Rev 2) Multiple Models August 2016
Page 3 of 15
SUBJECT:
4.
MDPS FLEXIBLE COUPLING REPLACEMENT
Remove the steering column guide
bracket hinge bolt (F)
Tightening torque:
13~14.5lb-ft (17.7~19.6 Nm)
F
5.
6.
Remove the steering column guide
bracket (G) from the steering
column.
G
Hold the MDPS upright and loosen
four Torx® head screws (H) securing
the column to the motor housing.
Tightening torque:
6.5 – 9.4 lb.ft (8.8 – 12.7 Nm)
H
TSB: CHA074 (Rev 2) Multiple Models August 2016
Page 4 of 15
SUBJECT:
7.
MDPS FLEXIBLE COUPLING REPLACEMENT
Separate the upper half (I) of the
motor housing from the lower half
(J).
I
J
8.
Remove the washer-gasket (K) and
connector (L) from lower portion of
the MDPS.
K
CAUTION
To avoid damage, use caution
when removing the connector.
9.
Remove the 3 Torx® head screws
(M) securing the MDPS ECU cover.
Tightening torque:
3.6 – 5.1 lb.ft (4.9 – 6.9 Nm)
TSB: CHA074 (Rev 2) Multiple Models August 2016
L
M
Page 5 of 15
SUBJECT:
10.
MDPS FLEXIBLE COUPLING REPLACEMENT
Remove the 4 Torx® head screws (N)
securing the MDPS motor cover.
N
Tightening torque:
3.6 – 5.1 lb.ft (4.9 – 6.9 Nm)
11.
Remove the MDPS motor cover.
CAUTION
To avoid damage, use caution
when removing the connector
and the wiring harness.
12.
Remove the original flexible coupling
(O) from the housing. In addition, use
an air gun to remove any foreign
matter from the motor and/or the
housing.
O
TSB: CHA074 (Rev 2) Multiple Models August 2016
Page 6 of 15
SUBJECT:
13.
MDPS FLEXIBLE COUPLING REPLACEMENT
Install the new improved flexible
coupling onto the steering column.
 NOTICE
Before installing the new part,
make sure it has “HNBR”
embossed on the surface.
The position of the flexible
coupling is not specific and can
be installed facing upward or
downward.
14.
Reinstall all removed components by reversing the order of removal. Perform the
Calibration Procedure found on page 13.
 NOTICE
Before reinstalling the MDPS unit, make sure the front wheels are pointing
straight ahead.
TSB: CHA074 (Rev 2) Multiple Models August 2016
Page 7 of 15
SUBJECT:
MDPS FLEXIBLE COUPLING REPLACEMENT
Replacement Procedure 2: This procedure applies to Soul (AM), and Forte (YD) models.
NOTE: Images shown are for general information and not representative of each model’s
actual configuration.
1.
Remove the crash pad lower panel
(A) by referring to “Body (Interior and
Exterior) → Interior → Crash Pad →
Repair procedures” on KGIS.
A
2.
Loosen three (3) steering column
shroud retaining screws (B) and then
remove the steering column upper
and lower shrouds.
B
 NOTICE
When loosening the steering
wheel column shroud fixing
screws, turn the steering wheel
90° to the left/right from aligned
position.
3.
Disconnect the
connectors (C).
MDPS
electrical
C
TSB: CHA074 (Rev 2) Multiple Models August 2016
Page 8 of 15
SUBJECT:
MDPS FLEXIBLE COUPLING REPLACEMENT
4.
Disconnect the multifunction switch,
wiper and washer switch, airbag, and
heated steering wheel electrical
connectors.
5.
Loosen both steering column retaining
bolts (D) and rear bolt (E) and lower
the steering column assembly.
E
Tightening torque:
9.4 – 13.0 lb.ft (12.7 – 17.7 Nm)
TSB: CHA074 (Rev 2) Multiple Models August 2016
D
Page 9 of 15
SUBJECT:
6.
MDPS FLEXIBLE COUPLING REPLACEMENT
Loosen the three MDPS motor
retaining bolts (F) and lift the MDPS
motor and set it to the side.
Tightening torque:
5.8~8.7 lb.ft (7.8~11. 8 Nm)
F
7.
Remove the original flexible coupling
(G) from the motor. In addition, use an
air gun to remove any foreign matter
from the motor and/or the housing.
G
TSB: CHA074 (Rev 2) Multiple Models August 2016
Page 10 of 15
SUBJECT:
8.
MDPS FLEXIBLE COUPLING REPLACEMENT
Install the new improved flexible
coupling onto the steering column.
 NOTICE
Before installing the new part,
make sure it has “HNBR”
embossed on the surface.
The position of the flexible
coupling is not specific and can
be installed facing upward or
downward.
9.
Reinstall all removed components by
reversing the order of removal.
TSB: CHA074 (Rev 2) Multiple Models August 2016
Page 11 of 15
SUBJECT:
MDPS FLEXIBLE COUPLING REPLACEMENT
Replacement Procedure 3: This procedure applies to Cadenza (VG) models.
NOTE: Images shown are for general information and not representative of each model’s
actual configuration.
 NOTICE
Before removing the MDPS unit, make sure to align the steering wheel to the center
position and verify the steering wheel tilt lever is in the locked position.
1.
Remove the MPDS unit by referring to
the applicable procedure on KGIS.
2.
Remove 3 bolts (A) securing the
MPDS motor to the housing.
A
3.
Separate the MDPS motor (B) from
the housing (C), as shown.
B
C
TSB: CHA074 (Rev 2) Multiple Models August 2016
Page 12 of 15
SUBJECT:
4.
5.
MDPS FLEXIBLE COUPLING REPLACEMENT
Remove the original flexible coupling
(D) from the motor. In addition, use an
air gun to remove any foreign matter
from the motor and/or the housing.
D
Install the new improved flexible
coupling onto the steering column.
 NOTICE
Before installing the new part,
make sure it has “HNBR”
embossed on the surface.
The position of the flexible
coupling is not specific and can
be installed facing upward or
downward.
 NOTICE
Before re-installing the MDPS unit, make sure the steering wheel is aligned to the
center position, with the front wheels pointing straight ahead.
6.
Reinstall all removed components by
reversing the order of removal.
Perform Calibration Procedure.
TSB: CHA074 (Rev 2) Multiple Models August 2016
Page 13 of 15
SUBJECT:
MDPS FLEXIBLE COUPLING REPLACEMENT
Calibration Procedure used after procedure 1 and 3 ONLY – Forte (TD) & Cadenza (VG):
1.
Connect the VCI-II to the OBD-II
connector, located under the driver’s
side of the instrument panel.
 NOTICE
The ECU upgrade function on
KDS operates wirelessly. It is
not necessary to perform the
upgrade via USB cable.
2.
With the ignition ON, turn ON the
KDS tablet. Select KDS from the
home screen.
3.
Confirm communication with VCI (A)
and then configure the vehicle (B)
using the AUTO VIN (C) feature.
B
A
C
4.
Select S/W Management.
TSB: CHA074 (Rev 2) Multiple Models August 2016
Page 14 of 15
SUBJECT:
MDPS FLEXIBLE COUPLING REPLACEMENT
5.
Select
Motor
Driven
Power
Steering → Steering Angle Sensor
(SAS) Calibration and follow the
instructions on the KDS.
6.
Once the SAS calibration is
completed, return to the KDS home
screen and select Data Analysis.
7.
Select EPS and then with the
steering wheel centered, verify the
Steering Angle Sensor is at 0.0 ± 5.0
degrees.
TSB: CHA074 (Rev 2) Multiple Models August 2016
Page 15 of 15
MDPS FLEXIBLE COUPLING REPLACEMENT
SUBJECT:
AFFECTED VEHICLE PRODUCTION RANGE:
Model
Applicable Production Range
Forte (TD)
June 1, 2011 through March 18, 2013
Forte (YD)
November 7, 2012 through April 26, 2014
Soul (AM)
January 8, 2009 through October 2, 2013
Cadenza (VG)
February 1, 2013 through April 19, 2014
PART INFORMATION:
Part Name
Part No.
Qty.
Flexible Coupling
56315 2K000FFF
1
Replacement Part
WARRANTY INFORMATION:
N Code: N29 C Code: C63
Model
Claim
Type
Causal
P/N
Soul (AM)
56310
2K625
Forte (TD)
56310
1M550
W
Cadenza (VG)
56310
3R561
Forte (YD)
56310
A7410
Qty.
0
Repair
Description
MDPS
Flexible
Coupling
Replacement
Labor Op
Code
Op
Time
56315F00
0.8 M/H
1.6 M/H
56315F02
Replacement
P/N
Qty.
56315
2K000FFF
1
1.0 M/H
0.8 M/H
 NOTICE
The repair procedure to replace the flexible coupling of the MDPS Soul (AM) and Forte
(YD) has been modified from the original repair procedure outlined in KGIS and
previously in TSB CHA044 (removal of certain parts as currently shown in the service
procedure on KGIS is not necessary to complete the replacement of the flexible
coupling). As a result, the labor time for the repairs for these models (includes
inspection) have been adjusted.
TSB: CHA074 (Rev 2) Multiple Models August 2016