Kia Rio: Motor Driven Power Steering / MDPS Motor

Kia Rio 2017-2023 YB Service Manual / Steering System / Motor Driven Power Steering / MDPS Motor

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 all connectors connected to the steering column.
4.

Loosen the steering column nuts.

Tightening torque :

24.5 - 29.4 N·m (2.5 - 3.0 kgf·m, 18.1 - 21.7 lb·ft)

5.

Loosen the steering column bolt and then remove the steering column assembly.
6.

Loosen the MDPS motor bolts.

Tightening torque :

14.7 - 21.6 N·m (2.5 - 3.0 kgf·m, 18.1 - 21.7 lb·ft)

7.

Install in the reverse order of removal.
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.
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.

    Description and operation Description MDPS (Motor Driven Power Steering) system uses an electric motor to assist the steering force and it is an engine operation independent steering system.

    Repair procedures Removal 1. Disconnect the battery negative cable. 2. Remove the crash pad lower panel.

    Other information:

    Kia Rio 2017-2023 YB Service Manual: Immobilizer System

    Schematic diagrams Circuit Diaram Description and operation Description The immobilizer system will disable the vehicle unless the proper ignition key is used, in addition to the currently available anti-theft systems such as car alarms, the immobilizer system aims to drastically reduce the rate of auto theft.

    Kia Rio 2017-2023 YB Service Manual: Power Mosfet (FATC)

    Repair procedures Inspection 1. Turn the ignition switch ON. 2. Manually operate the control switch and measure the voltage of blower motor. 3. Select the control switch to raise voltage until high speed.

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