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Home >> Kia >> 2019 >> Forte EX >> Repair and Diagnosis >> Steering >> Steering Column >> Motor Driven Power Steering >> 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.
      G12831560Courtesy of KIA MOTORS AMERICA, INC.
    4. Proceed with the test according to the screen instructions.
      G12831561Courtesy of KIA MOTORS AMERICA, INC.
      G12831562Courtesy of KIA MOTORS AMERICA, INC.
      G12831563Courtesy of KIA MOTORS AMERICA, INC.
      G12831564Courtesy of KIA MOTORS AMERICA, INC.
      G12831565Courtesy 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).
    G12831566Courtesy 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)

    G12831567Courtesy 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.
      G12831568Courtesy of KIA MOTORS AMERICA, INC.
    4. Proceed with the test according to the screen instructions.
      G12831569Courtesy of KIA MOTORS AMERICA, INC.
      G12831570Courtesy of KIA MOTORS AMERICA, INC.
      G12831571Courtesy of KIA MOTORS AMERICA, INC.
      G12831572Courtesy of KIA MOTORS AMERICA, INC.
      G12831573Courtesy 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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