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Home >> Kia >> 2023 >> Forte GT Line >> Repair and Diagnosis >> Steering >> Steering Column >> Motor Driven Power Steering System >> MDPS Control Unit >> Repair Procedures >> Replacement
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Repair Procedures: Replacement

NOTE:
  • If a DTC occurs in the ECU, check the connectors and wiring. If no problem is found, replace the ECU.
  • Before replacing the MDPS ECU, use the diagnostic device to read the settings of the old ECU
  1. Perform the "ECU data backup" 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 ECU)" on KDS screen, then select OK.
      G14561720Courtesy of KIA MOTORS AMERICA, INC.
    4. Proceed with the test according to the screen instructions.
    G14561721Courtesy of KIA MOTORS AMERICA, INC.
    G14561722Courtesy of KIA MOTORS AMERICA, INC.
    G14561723Courtesy of KIA MOTORS AMERICA, INC.
    G14561724Courtesy of KIA MOTORS AMERICA, INC.
    G14561725Courtesy of KIA MOTORS AMERICA, INC.
    NOTE: If a DTC occurs in the ECU, check the connectors and wiring. If no problem is found, replace the ECU.
  2. Disconnect the battery negative terminal.
  3. Remove the crash pad lower panel.

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

  4. Disconnect the MDPS ECU connectors (A).
    G14561726Courtesy of KIA MOTORS AMERICA, INC.
  5. Loosen the mounting bolts (A) and then remove the MDPS ECU (B).

    Tightening torque: 

    19.6 - 23.5 N.m (2.0 - 2.4 kgf.m, 14.5 - 17.4 lb.ft)

    G14561727Courtesy of KIA MOTORS AMERICA, INC.
  6. Install in the reverse order of removal.
  7. Perform the "ECU data restore" 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 ECU)" on KDS screen, then select OK.
      G14561728Courtesy of KIA MOTORS AMERICA, INC.
    4. Proceed with the test according to the screen instructions.
    G14561729Courtesy of KIA MOTORS AMERICA, INC.
    G14561730Courtesy of KIA MOTORS AMERICA, INC.
    G14561731Courtesy of KIA MOTORS AMERICA, INC.
    G14561732Courtesy of KIA MOTORS AMERICA, INC.
    G14561733Courtesy of KIA MOTORS AMERICA, INC.
  8. Perform the "Steering Angle Sensor (SAS) Calibration" and "Set the steering feel torque to zero".
  9. Turn off the IGN switch and wait for 10 seconds or more. Then check the operation after starting the engine.
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