KIA Niro: Electric Power Steering


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.


  1. MDPS Motor
  2. Steering column
  3. Steering universal joint

Schematic Diagrams

Harness Connector

Harness Connector

Electric Power Steering / Repair Procedures


 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


 Fuel Pump Repair procedures

Fuel sender Turn the ignition switch OFF, and then remove battery (-) terminal. Remove the fuel pump assembly. Using an ohmmeter, measure the resistance between terminals 1 and 6 of sender connector (A) at each float level.

 AHB(Active Hydraulic Boost) System / Description And Operation

Regeneration Brake System During deceleration or braking of an electric vehicle or HEV, the drive motor acts as an alternator and charges the battery by converting the vehicle's kinetic energy generated during braking into electrical energy. Re