TSBCHA084_R2

GROUP
CHA
MODEL
Multiple Models
NUMBER
084 (Rev 2, 06/21/2019)
DATE
November 2018
TECHNICAL SERVICE BULLETIN
SUBJECT:
REPLACEMENT 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 the Kia models listed on
the chart below with a column mounted 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 per DTC(s).
In cases of no DTC(s) with symptoms of binding/sticking steering feel, refer to TSB CHA060.
Model
Model Year
Optima (TF)
2011 – 2015
Optima (QF)
2012 – 2015
Optima (TF HEV)
2011 – 2016
Sorento (XMa)
2014 – 2015
Optima (JF, JFa)
2016~
Sorento (UMa)
2016~
Optima (JF P/HEV)
2017~
 NOTICE



This bulletin does NOT cover or outline the replacement of the complete C-MDPS
steering column assembly.
MDPS Repair Flowchart is 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 5
SUBJECT:
REPLACEMENT OF C-MDPS MOTOR, ECU AND/OR
STEERING COLUMN HOUSING
MDPS Repair Flowchart
Vehicle in for
MDPS related complaint.
NOISE:
Refer to shop manual
on KGIS for common
MDPS noise repairs.



MIL is ON:
DTC(s) Present / CAN
Line Error.
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
Replace Column and
Housing Assy
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 2) 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 5
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
Steering Angle Sensor
Signal Error
C1261
Zero-Setting Error
C1290
Torque Sensor Error
C1112
Torque Sensor Voltage Error
C1704
ECU Fail-Safe Relay Fault
C1705
ECU Hardware Error
C1604
ECU Over/Discharge Error
C2413
ECU Hardware Error
C2400
Motor Signal Error
C2401
Motor Circuit Error
C2412
Motor Voltage Supply Error
C1623
C1687
C1688
Inspection Procedure
Recommendation
Check battery voltage condition.
Recharge battery voltage.
Investigate driving conditions if DTC
is set. This DTC protects the motor
from overheating.
No replacement necessary.
Check GDS condition.
Check wiring and connector condition.
Check ECU CAN line.
Check MDPS ground.
Check EMS Can line.
Check the chassis CAN line.
Check the EMS
Check SPAS and associated wiring.
Repair as necessary.
Erase DTC(s).
MDPS Assy is not to be replaced.
Reset steering angle sensor calibration
and erase DTC(s).
Check wiring and connector condition.
If DTC returns, replace column
and housing assembly.
Reset steering angle sensor calibration.
If DTC returns, inspect wiring and
connector condition.
First, erase DTC, then check wiring
And connector condition.
If DTC returns, replace column
And housing assembly.
Check wiring and connector condition
Between torque sensor and ECU.
If DTC returns, replace the
MDPS ECU.
First, erase DTC.
Then check the wiring and connector
at the ECU.
If DTC returns, replace the
MDPS motor.
First, erase DTC.
Then check the wiring and connector
between the ECU and motor.
First replace MDPS ECU.
If DTC returns, replace the
MDPS motor.
CAN Time Out SAS
1.
CAN Time Out VSM
2.
3.
4.
If DTC returns, replace the
MDPS ECU.
VSM Signal Error
5.
Check MDPS power connector
and fuse.
Check MDPS ground line.
Check MDPS ECU/VSM CAN line.
Check communication status
with GDS.
Check for DTC C1259.
If present, replace the column and
housing assembly.
If DTC returns and MDPS is
inoperable, replace MDPS ECU.
If DTC returns and MDPS
operation is normal, continue
investigation into wiring issues.
TSB: CHA084 (Rev 2) Multiple Models November 2018
Page 4 of 5
SUBJECT:
REPLACEMENT OF C-MDPS MOTOR, ECU 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.
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.
Replacement Procedure for Steering Column & Housing:
1. Replace the MDPS motor by referring to
the “Steering System → Motor Driven
Power Steering → MDPS Column and
Housing → Repair Procedures” chapter
in the applicable Shop Manual on KGIS.
 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.
TSB: CHA084 (Rev 2) Multiple Models November 2018
Page 5 of 5
REPLACEMENT OF C-MDPS MOTOR, ECU AND/OR
STEERING COLUMN HOUSING
SUBJECT:
AFFECTED VEHICLE RANGE:
Model
Model Year Range
Optima (TF)
2011 through 2015
Optima (QF)
Optima (TF HEV)
Sorento (XMa)
Optima (JF, JFa)
Sorento (UMa)
Optima (JF P/HEV)
2012 through 2015
2011 through 2016
2014 through 2015
2016~
2016~
2017~
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
WARRANTY INFORMATION:
N Code: D61 C Code: ZZ4
Model
TF, QF,
TF HEV
JF, JFa,
JF
P/HEV
XMa
UMa
Claim
Type
W
W
W
W
Causal
P/N
Refer to
EPC
Refer to
EPC
Refer to
EPC
Refer to
EPC
Refer to
EPC
Refer to
EPC
Refer to
EPC
Refer to
EPC
Refer to
EPC
Refer to
EPC
Refer to
EPC
Refer to
EPC
Qty.
1
1
1
1
Repair
Description
C-MDPS Motor
Replacement
C-MDPS ECU
Replacement
Steering Column
Housing Replacement
C-MDPS Motor
Replacement
C-MDPS ECU
Replacement
Steering Column
Housing Replacement
C-MDPS Motor
Replacement
C-MDPS ECU
Replacement
Steering Column
Housing Replacement
C-MDPS Motor
Replacement
C-MDPS ECU
Replacement
Steering Column
Housing Replacement
Labor
Op Code
56330F01
56340F01
56391R00
56330F01
56340F01
56391R00
56330F01
56340F01
56391R00
56330F01
56340F01
56391R00
Op
Time
0.8
M/H
0.6
M/H
1.3
M/H
0.8
M/H
0.8
M/H
1.2
M/H
0.8
M/H
0.5
M/H
1.4
M/H
0.7
M/H
0.7
M/H
1.3
M/H
Replacement
P/N
Qty.
N/A
0
N/A
0
N/A
0
N/A
0
TSB: CHA084 (Rev 2) Multiple Models November 2018