Kia Rio: Motor Driven Power Steering / MDPS Control Unit

Kia Rio 2017-2021 YB Service Manual / Steering System / Motor Driven Power Steering / MDPS Control Unit

Repair procedures
Removal
1.

Disconnect the battery negative cable.

2.

Remove the crash pad lower panel.

(Refer to Body - "Crash Pad Lower Panel")

3.

Disconnect the MDPS EUC connector.

4.

Loosen the MDPS ECU bolts and then remove the MDPS ECU.

5.

Install in the reverse order of removal.

6.

Perform the "Steering Angle Sensor (SAS) Calibration" and "Set the steering feel torque to zero".

7.

Turn off the IGN switch and wait for 10 seconds or more. Then check the operation after starting the engine.

Installation
1.

Install in the reverse order of removal.

2.

Check the wheel alignment.

(Refer to Suspension System - "Alignment")

3.

Perfrom the ASP Calibration.

(Refer to Electric Power Steering - " Repair procedures")

Diagnosis with KDS

Steering Angle Sensor (SAS) Calibration and Set the steering feel torque to zero

  

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) Calibration".

After completing the "Steering Angle Sensor (SAS) Calibration", switch off the ignition and wait for several seconds. Then, start the engine to confirm normal operation of the vehicle.

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 "Steering Angle Sensor (SAS) Calibration" on KDS screen, then select OK.

4.

Proceed with the test according to the screen instructions.

5.

Select the "Set the steering feel torque to zero" on KDS screen, then select OK.

6.

Proceed with the test according to the screen instructions.

7.

Remove the DTC.

8.

Turn off the IG switch and wait for 10 seconds or more before starting the engine. And then make sure that MDPS works properly.

MDPS Motor
Repair procedures Removal 1. Disconnect the battery negative cable. 2. Remove the crash pad lower panel. (Refer to Body - "Crash Pad Lower P ...

MDPS Column and Housing
Repair procedures Removal 1. Remove the steering column and shaft assembly. (Refer to Motor Driven Power Steering - "Steering Column and Shaft") ...

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