NHTSA ID Number: 10183333
Manufacturer Communication Number: TSB_CHA084_R6
TSB/Document Date: 2020-12-02
Summary
TECHNICAL SERVICE BULLETIN: PARTIAL REPAIR OF C-MDPS MOTOR, ECU, WORM GEAR AND/OR STEERING COLUMN HOUSING - 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), Worm Gear Assembly or Steering Column Housing on some 2010MY~ Kia
models listed on page 8, equipped with a Column Motor Driven Power Steering (C-MDPS) unit.
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TSB/Document ID: TSB_CHA084_R6
Replacement Service Bulletin Number:
MFR Communication Date: 2020-11-25
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ENGINE AND ENGINE COOLING
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
GROUP
CHA
NUMBER
084 (Rev 6, 11/25/2020)
MODEL
All Applicable
Models with
C-MDPS
DATE
November 2018
TECHNICAL SERVICE BULLETIN
SUBJECT:
PARTIAL REPAIR OF C-MDPS MOTOR, ECU, WORM GEAR
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), Worm Gear Assembly or Steering Column Housing on some
2010MY~ Kia models listed on page 8, 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, Worm Gear Assembly or Steering Column
Housing.
NOTICE
•
•
•
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).
Replacing the complete C-MDPS Steering Column Assembly is NOT allowed when the
components failure is identified in the flowchart. In addition, replacing the Steering
Column Housing is NOT allowed when the problem source is the C-MDPS Worm Gear
Assembly (for applicable models).
Printed TSB copy is for reference only; information may be updated at any time.
Always refer to KGIS for the latest information.
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 9
SUBJECT:
REPLACEMENT OF C-MDPS MOTOR, ECU,
WORM GEAR ASSEMBLY 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.
C-MDPS Worm Gear*
replacement, page 6.
*Mobis C-MDPS only.
•
•
•
MIL is ON:
DTC(s) Present / CAN
Line Error.
See DTC Table on page 4.
Check MDPS connectors and wiring.
Erase 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 Wiring at HECU/MDPS/EMS:
Replace the
MDPS ECU.
Replace the
MDPS Motor.
•
•
•
•
Check connectors for poor connection.
Check for connector corrosion.
Check for connector damage or deformation.
Check the DTC Diagnostic Guide 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 6) Multiple Models November 2018
Page 3 of 9
SUBJECT:
REPLACEMENT OF C-MDPS MOTOR, ECU,
WORM GEAR ASSEMBLY 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
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
No problem found
Mounts
6. Check Steering Gear Box Noise
Problem Found
Replace defective part
C-MDPS Motor
Worm Gear
No problem found
7. Check C-MDPS
Noise present from the column and housing
Noise present from C-MDPS motor
Noise from C-MDPS Worm Shaft Bearing
Problem Found
Replace defective part:
C-MDPS Worm Gear assembly
or Steering Column and Housing
or C-MDPS Motor assembly.
Video: Worm Shaft Bearing Noise
Applicable Models Only: Mobis C-MDPS
Steering Column
and Housing Assembly
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 6) Multiple Models November 2018
Page 4 of 9
SUBJECT:
REPLACEMENT OF C-MDPS MOTOR, ECU,
WORM GEAR ASSEMBLY 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. C
heck 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.
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