LEMON Manuals: Even more car manuals for everyone
Home >> Kia >> 2018 >> Optima Plug-In Hybrid EX >> Repair and Diagnosis >> Steering >> Steering Column >> Motor Driven Power Steering System (PHEV) >> MDPS Motor >> Repair Procedures >> Replacement

Repair Procedures: Replacement

NOTE:
  • 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 replacing the motor.
  • Entering incorrect motor constant value may cause a serious problem in the MDPS.
  1. Disconnect the battery negative cable from the battery and then wait for at least 30 seconds.
  2. Remove the crash pad lower panel.

    (Refer to Body - "CRASH PAD LOWER PANEL ")

  3. After loosening the mounting screws, then remove the steering column shroud lower panel (A).
    G12349904Courtesy of KIA MOTORS AMERICA, INC.
  4. Disconnect all connectors connected to the steering column.
  5. Remove the steering column & EPS unit assembly by loosening the mounting bolt (B) and nuts (A).

    Tightening torque: 

    Nut: 2.7 - 17.7 N.m (1.3 - 1.8 kgf.m, 9.4 - 13.0 lb.ft)

    Bolt: 29.4 - 34.3 N.m (3.0 - 3.5 kgf.m, 21.7 - 25.3 lb.ft)

    G12349905Courtesy of KIA MOTORS AMERICA, INC.
    G12349906Courtesy of KIA MOTORS AMERICA, INC.
  6. Loosen the MDPS motor bolts and then remove the MDPS motor.
    NOTE:
    • Be careful not to damage the driver's seat when replacing the MDPS motor.
    • Be careful not to damage the MDPS motor & ECU.
    • If shock the motor, may occurs a noise caused by the bearing damage of motor inside.
  7. Install in the reverse order of removal.
  8. Perform the "Inputting the motor constant value" by KDS following in the order below.
    1. Connect self-diagnosis connector (16pins) located under the driver side crash pad to self-diagnosis device, and then turn the self-diagnosis device after key is ON.
    2. Select the "vehicle model" and "Motor Driven Power Steering" on KDS vehicle selection screen.
    3. Select the "Part replacement (Power steering Motor)" on KDS screen, then select OK.
      G12349907Courtesy of KIA MOTORS AMERICA, INC.
    4. Proceed with the test according to the screen instructions.
    G12349908Courtesy of KIA MOTORS AMERICA, INC.
    G12349909Courtesy of KIA MOTORS AMERICA, INC.
    G12349910Courtesy of KIA MOTORS AMERICA, INC.
    G12349911Courtesy of KIA MOTORS AMERICA, INC.
    G12349912Courtesy of KIA MOTORS AMERICA, INC.
    G12349913Courtesy of KIA MOTORS AMERICA, INC.
    NOTE: Entering incorrect motor constant value may cause a serious problem in the MDPS.
  9. Perform the "STEERING ANGLE SENSOR (SAS) CALIBRATION AND SET THE STEERING FEEL TORQUE TO ZERO ".
  10. Turn off the IGN switch and wait for 10 seconds or more. Then check the operation after starting the engine.
scientia non olet · About LEMON Manuals