Hyundai i-30: Motor Driven Power Steering / MDPS Control Unit

Hyundai i30 (PD) 2018-2024 Service Manual / Steering System / Motor Driven Power Steering / MDPS Control Unit

Repair procedures
Replacement
  
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
1.
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)"

(5)
Follow the instructions shown on the screen.

(6)
Insert the VIN number and then select the "Read" in order to the ECU information save.

2.
Disconnect the battery negative cable from the battery and then wait for at least 30 seconds.
3.
Remove the crash pad lower panel.
(Refer to Body - "Crash Pad Lower Panel")
4.
Disconnect the conector and loosening the than mounting bolts.

5.
Install in the reverse order of removal.
6.
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)"

(5)
Follow the instructions shown on the screen.

(6)
Insert the VIN number and then select the "Write" in order to the ECU information save.

7.
Conduct the "ASP Calibration" by GDS.
(Refer to MDPS Control Unit- "Diagnosis with GDS")
8.
Remove the DTC.
9.
Turn off the IGN switch and wait for 10 seconds or more. Then check the operation after starting the engine.
Diagnosis with GDS
Steering-angle sensor detects the steering angle and steering angle speed. Steering angle and steering angle speed are used for steering wheel damping and return controls in addition to providing assistance torque.
  
You can use a scan tool to (GDS) check if the battery voltage is proper before perform the "ASP Calibration".
Make sure that no connector engaged to the vehicle or scan tool is disconnected during the "ASP Calibration".
Once the "ASP Calibration" is complete, turn off the IG switch and wait for 10 seconds or more before starting the engine to check the operation.
SAS Calibration procedures
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.
Turn the steering wheel to straight ahead position.
4.
After Selecting the "vehicle model" and "system", select the "SAS Calibration" on diagnostic tool vehicle selection screen.

5.
Remove the DTC.
6.
Turn off the IG switch and wait for 10 seconds or more before starting the engine. And then make sure that MDPS works properly.

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