KIA Niro: Electric Power Steering
Description
MDPS (Motor Driven Power Steering) system uses an electric motor to assist the steering force and it is an engine operation independent steering system.
MDPS control module controls the motor operation according to information received from the each sensor and CAN (Controller Area Network), Resulting in a more precise and timely control of steering assist than conventional engine-driven hydraulic systems. Components (Steering Angle Sensor, Torque Sensor, Fail-safe relay, etc.) of the MDPS system are located inside the steering column. MDPS unit assembly, steering column, and MDPS unit assembly must not be disassembled for inspection. They must be replaced if necessary.
Components
- MDPS Motor
- Steering column
- Steering universal joint
- MDPS ECU
Schematic Diagrams
Harness Connector
- Electric Power Steering / Repair Procedures
- Steering Column and Shaft Repair procedures
- Steering Angle Sensor (SAS) Calibration | Part replacement (Power steering ECU)
- Steering Angle Sensor (SAS) Calibration and Set the steering feel torque to zero
- MDPS Tuning Data Setting | Steering Column and Shaft Repair procedures
- Steering Gear box Repair procedures
READ NEXT:
Electric Power Steering / Repair Procedures
A/S Repair produres
MDPS System A/S Workflow
Noise / malfunction Inspection
Warning lamp (DTC) / CAN Line error
2 - 1 Checking Connectors and Wiring
Checking Connectors and Wiring.
Check for damage, push-back, or
Steering Column and Shaft Repair procedures
Replacement
Warning
When a DTC related to MDPS motor occurs, check the connectors
and wiring. If no problem is found, replace the motor.
Be sure to check the last two digits of the constant in the
barcode of new MDPS motor before replaci
Steering Angle Sensor (SAS) Calibration | Part replacement (Power steering ECU)
Warning
Check that the battery is fully charged before "Steering Angle Sensor (SAS) Calibration".
Be careful not to disconnect any cables connected to the vehicle or scan tool during "Steering Angle Sensor (SAS) Calibr
SEE MORE:
Indicators And Gauges - Troubleshooting
Troubleshooting
Error Item:
Screen display
Failure
symptom:
LCD screen
does not turn
on
Inspection items:
Connector
attachments
Components
Detailed inspections:
Check the
connector
attachments
Check B+, IGN and
Engine Control System
Components
Location
Engine Control Module (ECM)
Manifold Absolute Pressure Sensor (MAPS)
Mass Air Flow Sensor (MAFS)
Intake Air Temperature Sensor (IATS)
Engine Coolant Temperature Sensor (ECTS) (Water Temperature Control
Assem
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