GROUP
CHA

NUMBER
084 (Rev 4, 11/26/2019)

MODEL
All Applicable
Models with
C-MDPS
DATE
November 2018

TECHNICAL SERVICE BULLETIN
SUBJECT:

PARTIAL REPAIR OF C-MDPS MOTOR, ECU
AND/OR STEERING COLUMN HOUSING

 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 provides information regarding the partial repair of the Motor Driven Power Steering
(MDPS) Motor, Electronic Control Unit (ECU) or Steering Column Housing on some 2010MY~ Kia
models listed on page 5 equipped with a Column Motor Driven Power Steering (C-MDPS) unit. Follow
the MDPS Flowchart (page 2) along with the MDPS DTC Table (page 3) procedure outlined in this
bulletin before replacing the C-MDPS Motor, ECU or Steering Column Housing.

 NOTICE




This bulletin does NOT cover or outline the replacement of the complete C-MDPS
steering column assembly.
MDPS Repair Flowchart and Common Noise Flowchart are meant to be used as a
reference guide only. See MDPS DTC table for more details.
Note that some DTC(s) may be found in systems other than Electric Power Steering
(EPS) in KDS. They may be found in the Brake/ABS/ESC system. Check all systems
for DTC(s).

File Under:
Circulate To:

X General Manager


X Service Advisors


X Technicians


X Service Manager


X Parts Manager


X Body Shop Manager 
X Fleet Repair


Page 2 of 6
SUBJECT:

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

MDPS Repair Flowchart

Vehicle in for
MDPS related complaint.

NOISE:
Refer to
C-MDPS Common
Noise Concerns
flowchart on page 3.





MIL is ON:
DTC(s) Present / CAN
Line Error.
See DTC Table on page 4.

Check MDPS connectors and wiring.
Erace DTC(s) and re-check.
If DTC(s) are still present, follow the recommended
repair per DTC stored.

ECU Related:
C1112
C1604
C1623
C1687
C1688
C1704
C1705
C2412
C2413

NO MIL:
No DTC(s) Present
Sticking/Binding
Refer to CHA060 TSB

Motor Related:
C2400
C2401

Column and
Housing
Related:

Connectors/
Wiring
Related:

C1259
C1290

C1260, C1261,
C1611, C1612,
C1616, C1622,
C1628, C1646,
C1656, C1692,
C1693, C1696,
C1697

Replace the Column
and Housing Assy.

Check DTC(s) and Wiringat HECU/MDPS/EMS:

Replace the
MDPS ECU.

Replace the
MDPS Motor.






TSB: CHA084 (Rev 4) Multiple Models November 2018

Check connectors for poor connection.
Check for connector corrosion.
Check for connector damage or deformation.
Check the DTC Diagnostic Guide on KGIS.

Page 3 of 6
SUBJECT:

REPLACEMENT OF C-MDPS MOTOR, ECU AND/OR
STEERING COLUMN HOUSING
C-MDPS
Common Noise Concerns Flowchart
DAB

C-MDPS
Noise Inspection Steps

1. Check Steering Wheel
Inspect the condition of the (Driver’s Air bag)
DAB wiring (ex. DAB, clock spring,
multifunction switch-MFS )

Clock
Spring

Problem Found

Replace defective part

MFS

No problem found

C-MDPS Mounts
2. Check the C-MDPS Mounting Position
Inspect cowl mounting and cross member bolt
Inspect C-MDPS mounting bolts

Problem Found

Retighten bolt

Problem Found

Retighten U-joint bolt

No problem found
3. Check U-Joint Mounting Bolt
Inspect U-joint retaining bolt, check for noise
after disassembling/re-assemble.

U-Joint(s)

No problem found

Tie Rod End
4. Check Tire-Rod End Joint for Free Play

Problem Found

Replace defective part

Problem Found

Retighten bolt

No problem found

5. Check Steering Gear box Mounting Bolt

Steering Gear Box

No problem found

Mounts
6. Check Steering Gear Box Noise

Problem Found

Replace defective part

C-MDPS Motor

No problem found
7. Check C-MDPS
Noise present from the column and housing…
Noise present from C-MDPS motor...

Problem Found

Replace defective part:
Steering Column and Housing
or C-MDPS Motor assembly.

Steering Column
and Housing Assembly

TSB: CHA084 (Rev 4) Multiple Models November 2018

Page 4 of 6
SUBJECT:

REPLACEMENT OF C-MDPS MOTOR, ECU AND/OR
STEERING COLUMN HOUSING
MDPS DTC TABLE

DTC

Concern

C1102

Battery Voltage Problem

C1603

MDPS Thermal Protection

C1611

CAN Time Out EMS

C1616

CAN BUS OFF

C1622

Vehicle Speed Signal Error

C1696
C1697

SPAS Signal Error

C1612
C1646

TCU Signal Error

Check TCU and associated wiring.

C1628
C1656

Instrument Cluster
Signal Error

Check instrument cluster and
Associated wiring.

C1692
C1693

VSM Signal Error

Check VSM and associated wiring.

C1259

Steering Angle Sensor
Signal Error

C1260