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Home >> Kia >> 2019 >> Soul EV Base >> Repair and Diagnosis (Single Page) >> 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.
      G12818203Courtesy of KIA MOTORS AMERICA, INC.
    4. Proceed with the test according to the screen instructions.
    G12818204Courtesy of KIA MOTORS AMERICA, INC.
    G12818205Courtesy of KIA MOTORS AMERICA, INC.
    G12818206Courtesy of KIA MOTORS AMERICA, INC.
    G12818207Courtesy of KIA MOTORS AMERICA, INC.
    G12818208Courtesy 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 cable from the battery and then wait for at least 30 seconds.
  3. Remove the crash pad lower panel.

    (Refer to "CRASH PAD LOWER PANEL ")

  4. Disconnect the MDPS ECU connectors (A).
    G12818209Courtesy of KIA MOTORS AMERICA, INC.
  5. Loosen the mounting bolts (A) and then remove the MDPS ECU (B).
    G12818210Courtesy of KIA MOTORS AMERICA, INC.
  6. Loosen the star wrench (A) and then remove the MDPS ECU bracket (B).
    G12818211Courtesy of KIA MOTORS AMERICA, INC.
  7. Install in the reverse order of removal.
  8. 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.
      G12818212Courtesy of KIA MOTORS AMERICA, INC.
    4. Proceed with the test according to the screen instructions.
    G12818213Courtesy of KIA MOTORS AMERICA, INC.
    G12818214Courtesy of KIA MOTORS AMERICA, INC.
    G12818215Courtesy of KIA MOTORS AMERICA, INC.
    G12818216Courtesy of KIA MOTORS AMERICA, INC.
    G12818217Courtesy of KIA MOTORS AMERICA, INC.
  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.
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