Repair Procedures: Replacement

WARNING: This page is about a different car, the 2017 Kia Niro. However, it is still accessible from the selected car via links, so may be relevant.

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

Perform the "ECU Data Backup" by KDS following in the order below.
1. Connect self-diagnosis connector (16 pins) 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.
  
  Fig 1: Screen Display - Part Replacement (Power Steering ECU)
  Courtesy of KIA MOTORS AMERICA, INC.
4. Proceed with the test according to the screen instructions.
Fig 2: Screen Display - Part Exchange (Power Steering ECU; 1 Of 5)
Courtesy of KIA MOTORS AMERICA, INC.

Fig 3: Screen Display - Part Exchange (Power Steering ECU; 2 Of 5)
Courtesy of KIA MOTORS AMERICA, INC.

Fig 4: Screen Display - Part Exchange (Power Steering ECU; 3 Of 5)
Courtesy of KIA MOTORS AMERICA, INC.

Fig 5: Screen Display - Part Exchange (Power Steering ECU; 4 Of 5)
Courtesy of KIA MOTORS AMERICA, INC.

Fig 6: Screen Display - Part Exchange (Power Steering ECU; 5 Of 5)
Courtesy 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.
Disconnect the battery negative terminal.
Remove the crash pad lower panel.
(Refer to Body - "CRASH PAD LOWER PANEL ")
Remove the Knee Airbag (KAB) Module.
(Refer to Restraint - "KNEE AIRBAG (KAB) MODULE ")
Disconnect the MDPS ECU connectors (A).

Fig 7: Disconnecting MDPS ECU Connectors (1 Of 2)
Courtesy of KIA MOTORS AMERICA, INC.

Fig 8: Disconnecting MDPS ECU Connectors (2 Of 2)
Courtesy of KIA MOTORS AMERICA, INC.
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)

Fig 9: Removing MDPS ECU Mounting Bolts
Courtesy of KIA MOTORS AMERICA, INC.
Install in the reverse order of removal.
Perform the "ECU Data Restore" by KDS following in the order below.
1. Connect Self-Diagnosis connector (16 pins) 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.
  
  Fig 10: Screen Display - Part Replacement (Power Steering ECU)
  Courtesy of KIA MOTORS AMERICA, INC.
4. Proceed with the test according to the screen instructions.
Fig 11: Screen Display - Part Exchange (Power Steering ECU; 1 Of 5)
Courtesy of KIA MOTORS AMERICA, INC.

Fig 12: Screen Display - Part Exchange (Power Steering ECU; 2 Of 5)
Courtesy of KIA MOTORS AMERICA, INC.

Fig 13: Screen Display - Part Exchange (Power Steering ECU; 3 Of 5)
Courtesy of KIA MOTORS AMERICA, INC.

Fig 14: Screen Display - Part Exchange (Power Steering ECU; 4 Of 5)
Courtesy of KIA MOTORS AMERICA, INC.

Fig 15: Screen Display - Part Exchange (Power Steering ECU; 5 Of 5)
Courtesy of KIA MOTORS AMERICA, INC.
Perform the "STEERING ANGLE SENSOR (SAS) CALIBRATION" AND "SET THE STEERING FEEL TORQUE TO ZERO ".
Turn OFF the IGN switch and wait for 10 seconds or more. Then check the operation after starting the Engine.