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.

Perform the "ECU data backup" by GDS following in the order below .
1. Connect self - diagnosis connector (16pins) located in the lower of driver side crash pad to self - diagnosis device.
2. Turn the self - diagnosis device after key is ON.
3. After Selecting the "vehicle model" and "EPS system" on GDS vehicle selection screen.
4. Select the "Part exchange(Power steering ECU)"
  
  Fig 1: Scantool Display - Part Exchange (Power Steering ECU) And ID Register
  Courtesy of KIA MOTORS AMERICA, INC.
5. Follow the instructions shown on the screen.
  
  Fig 2: Scantool Display - Part Exchange (Power Steering ECU)
  Courtesy of KIA MOTORS AMERICA, INC.
  
  Fig 3: Scantool Display - Part Exchange Procedure (Power Steering ECU)
  Courtesy of KIA MOTORS AMERICA, INC.
6. Insert the VIN number and then select the "Read" in order to the ECU information save.
Fig 4: Scantool Display - VIN Number
Courtesy of KIA MOTORS AMERICA, INC.

Fig 5: Scantool Display - ECU Data Backup Message
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 cable from the battery and then wait for at least 30 seconds.
Remove the crash pad lower panel.
(Refer to Body - "CRASH PAD LOWER PANEL ")
Disconnect the MDPS ECU connectors (A).

Fig 6: Locate MDPS ECU Connectors
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 ~ 17.3 lb-ft)

Fig 7: Locate MDPS ECU And Mounting Bolts
Courtesy of KIA MOTORS AMERICA, INC.
Loosen the star wrench (A) and then remove the MDPS ECU bracket (B).
Tightening Torque:

7.8 ~9.8 N.m (0.8 ~ 1.0 kgf.m, 5.8 ~ 7.2 lb-ft)

Fig 8: Locate MDPS ECU Bracket And Star Wrench
Courtesy of KIA MOTORS AMERICA, INC.
Install in the reverse order of removal.
Perform the "ECU data restore" by GDS following in the order below .
1. Connect self - diagnosis connector (16pins) located in the lower of driver side crash pad to self - diagnosis device.
2. Turn the self - diagnosis device after key is ON.
3. After Selecting the "vehicle model" and "EPS system" on GDS vehicle selection screen.
4. Select the "Part exchange (Power steering ECU)"
  
  Fig 9: Scantool Display - Part Exchange (Power Steering Motor) And ID Register
  Courtesy of KIA MOTORS AMERICA, INC.
5. Follow the instructions shown on the screen.
  
  Fig 10: Scantool Display - Part Exchange (Power Steering ECU)
  Courtesy of KIA MOTORS AMERICA, INC.
  
  Fig 11: Scantool Display - Part Exchange Procedure (Power Steering ECU)
  Courtesy of KIA MOTORS AMERICA, INC.
6. Insert the VIN number and then select the "Write" in order to the ECU information save.
Fig 12: Scantool Display - VIN Number
Courtesy of KIA MOTORS AMERICA, INC.
Conduct the "ASP Calibration" by GDS.
(Refer to MDPS Control Unit- "DIAGNOSIS WITH GDS ")
Turn off the IGN switch and wait for 10 seconds or more. Then check the operation after starting the engine.