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 back-up" 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: Screen Display - Vehicle S/W Management
  Courtesy of KIA MOTORS AMERICA, INC.
5. Follow the instructions shown on the screen.
  
  Fig 2: Screen Display - Part Exchange (Power Steering ECU)
  Courtesy of KIA MOTORS AMERICA, INC.
  
  Fig 3: Screen Display - Part Exchange Procedures (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: Screen Display - VIN Number
Courtesy of KIA MOTORS AMERICA, INC.

Fig 5: Screen Display - 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 ")
Loosen the screw and then remove the shower tilt (A).

Fig 6: Locating Shower Tilt With Screw
Courtesy of KIA MOTORS AMERICA, INC.
After loosening the mounting screws, then remove the steering column shroud lower panel (A).

Fig 7: Locating Steering Column Shroud Lower Panel With Mounting Screws
Courtesy of KIA MOTORS AMERICA, INC.
Disconnect the MDPS ECU connector (A).

Fig 8: Locating MDPS ECU Connector
Courtesy of KIA MOTORS AMERICA, INC.

Fig 9: MDPS ECU Connector
Courtesy of KIA MOTORS AMERICA, INC.
Disconnect all connectors connected the steering column & EPS unit assembly.
Remove the steering column & EPS unit assembly by loosening the mounting bolt (A) and nuts (B).
Tightening torque:

Nut: 12.7 - 17.7 N.m (1.3 - 1.8 Kgf.m, 9.4 - 13.0 lb.ft)

Bolt: 44.1 - 49.0 N.m (4.5 - 5.0 Kgf.m, 32.5 - 36.2 lb.ft)

Fig 10: Locating Steering Column & EPS Unit Assembly Nuts
Courtesy of KIA MOTORS AMERICA, INC.

Fig 11: Locating Steering Column & EPS Unit Assembly Mounting Bolts
Courtesy of KIA MOTORS AMERICA, INC.
Disconnect the MDPS ECU connector (A).

Fig 12: Locating MDPS ECU Connector
Courtesy of KIA MOTORS AMERICA, INC.
Loosen the bolts (A) and then remove the MDPS ECU (B).

Fig 13: Locating MDPS ECU And Bolts
Courtesy of KIA MOTORS AMERICA, INC.
Loosen the MDPS ECU bracket bolts (A) and then remove the MDPS ECU bracket.

Fig 14: Locating MDPS ECU Bracket Bolts
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 15: Screen Display - Vehicle S/W Management
  Courtesy of KIA MOTORS AMERICA, INC.
5. Follow the instructions shown on the screen.
  
  Fig 16: Screen Display - Part Exchange (Power Steering ECU)
  Courtesy of KIA MOTORS AMERICA, INC.
  
  Fig 17: Screen Display - Part Exchange Procedures (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 18: Screen 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.