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 (16 pins) 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)"
  
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5. Follow the instructions shown on the screen below.
  
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6. Insert the VIN number and then select the "Read" in order to the ECU information save.
  
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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 "CRASH PAD LOWER PANEL .")
Disconnect the MDPS ECU connectors (A).

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Loosen the mounting bolts (A) and then remove the MDPS ECU (B).

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Loosen the star wrench (A) and then remove the MDPS ECU bracket (B).

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Install in the reverse order of removal.
Perform the "ECU data backup" by GDS following in the order below.
1. Connect self - diagnosis connector (16 pins) 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)"
  
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5. Follow the instructions shown on the screen below.
  
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6. Insert the VIN number and then select the "Write" in order to the ECU information save.
  
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Conduct the "ASP Calibration" by GDS.
(Refer to "MOTOR DRIVEN POWER STEERING SYSTEM DIAGNOSIS .")
Turn off the IGN switch and wait for 10 seconds or more. Then check the operation after starting the engine.