Hyundai Sonata: Electric Power Steering / Steering Column and Shaft Repair procedures

Hyundai Sonata LF 2014-2019 Service Manual / Steering System / Electric Power Steering / Steering Column and Shaft Repair procedures

Removal

[For C-MDPS Type]

Must be backup the ECU data before exchanging the ECU. The backup data is stored by the VIN number.

Before exchanging the MDPS motor, must be confirm the last two digit of the constant value in motor barcord.

1.	Disconnect the battery negative cable from the battery and then wait for at least 30 seconds.

2.	Turn the steering wheel so that the front wheels can face straight ahead.

3.	Remove the airbag module.

Remove the DAB module.

(1)	Disconnect the air bag connector (A).

(2)	Disconnect the horn connector (B).

(3)	Remove the clip(C).

5.	Loosen the steering wheel lock bolt properly. Separate the steering wheel by using SST(09561-11001).

6.	Loosen the steering wheel lock bolt completely, remove the steering wheel.

7.	Remove the steering column shroud (A) & (B).

Disconnect the connector and then remove the clock spring (A).

When assembling the clock spring, follow the below procedure.

1.	Press the Auto Lock at 6 O' Clock and turn clockwise 3 rotations.

2.	Press the Auto Lock at 6 O' Clock and turn counter-clockwise 3 rotations.

3.	If white cable is visible through the 10 O' Clock Neutral Check Window, then the spring is set to neutral.

Normal	Abnormal

9.	Disconnect the multifunction switch connector.

10.	Loosen the screw and then remove the multifunction switches (A).

11.	Remove the crash pad lower cover,

12.	Loosen the knee aig bag mounting nut (A) and then disconnect the connector (B).

13.	Disconnect the ECU connector (A) & (B).

14.	Disconnect the connected wiring at the steering column assembly.

15.

Loosen the universal joint bolt(A) and then disconnect the universal joint assembly.

Tightening torque :

32.4 ~ 37.3 N.m (3.3 ~ 3.8 kgf.m, 23.9 ~ 27.5 lb-ft)

•	Lock the steering wheel in the straight ahead position to prevent the damage of the clock spring inner cable when you handle the steering wheel.

•	Do not reuse the bolt.

16.

Remove the steering column & EPS unit assembly by loosening the mounting bolt (B) and nuts (A).

Tightening torque

Nut :

25.0 ~ 29.4 N.m (2.5 ~ 3.0 kgf.m, 14.5 ~ 21.7 lb-ft)

Bolt :

44.1 ~ 49.0 N.m (4.5 ~ 5.0 kgf.m, 32.5 ~ 36.2 lb-ft)

17.

Installation is the reverse of the removal.

•	Must be perform ASP calibration and EPS type recognition after assembling.

[For R-MDPS Type]

1.	Disconnect the battery negative cable from the battery and then wait for at least 30 seconds.

2.	Turn the steering wheel so that the front wheels can face straight ahead.

3.	Remove the airbag module.

Remove the DAB module.

(1)	Disconnect the air bag connector (A).

(2)	Disconnect the horn connector (B).

(3)	Remove the clip(C).

5.	Loosen the steering wheel lock bolt properly. Separate the steering wheel by using SST(09561-11001).

6.	Loosen the steering wheel lock bolt completely, remove the steering wheel.

7.	Remove the steering column shroud (A) & (B).

Disconnect the connector and then remove the clock spring (A).

When assembling the clock spring, follow the below procedure.

1.	Press the Auto Lock at 6 O' Clock and turn clockwise 3 rotations.

2.	Press the Auto Lock at 6 O' Clock and turn counter-clockwise 3 rotations.

3.	If white cable is visible through the 10 O' Clock Neutral Check Window, then the spring is set to neutral.

Normal	Abnormal

9.	Disconnect the multifunction switch connector.

10.	Loosen the screw and then remove the multifunction switches (A).

11.	Remove the crash pad lower cover,

12.	Loosen the knee aig bag mounting nut (A) and then disconnect the connector (B).

13.	Disconnect the connected wiring at the steering column assembly.

14.

Loosen the universal joint bolt(A) and then disconnect the universal joint assembly.

Tightening torque :

32.4 ~ 37.3 N.m (3.3 ~ 3.8 kgf.m, 23.9 ~ 27.5 lb-ft)

•	Lock the steering wheel in the straight ahead position to prevent the damage of the clock spring inner cable when you handle the steering wheel.

•	Do not reuse the bolt.

15.

Remove the steering column & EPS unit assembly by loosening the mounting bolt (B) and nuts (A).

Tightening torque

Nut :

25.0 ~ 29.4 N.m (2.5 ~ 3.0 kgf.m, 14.5 ~ 21.7 lb-ft)

Bolt :

44.1 ~ 49.0 N.m (4.5 ~ 5.0 kgf.m, 32.5 ~ 36.2 lb-ft)

Disassembly

Key lock assembly

1.	Make a groove on the head of special bolts (A) by a punch.

2.	Loosen the special bolt using a screw driver and then remove the key lock assembly from the steering column assembly.

3.	Reassembly is the reverse of the disassembly.

Universal joint assembly

Loosen the bolt (A) and then disconnect the universal joint assembly from the steering column assembly.

Tightening torque :

49.1 ~ 58.8 N.m (5.0 ~6.0 kgf.m, 36.2 ~ 42.4 lb-ft)

Reassembly is the reverse of the disassembly.

•	Lock the steering wheel in the straight ahead position to prevent the damage of the clock spring inner cable when you handle the steering wheel.

•	Do not reuse the bolt.

Installation

1.	Installation is the reverse of the removal.

2.	Connect the diagnostic instrument to the self-diagnostic connector (16-pin) beneath the crash pad on the side of driver's seat, and then turn on the ignition to activate the diagnostic instrument.

3.	In the GDS Vehicle Type Selection menu, select "Vehicle Type" and "EPS" System, and then opt for "OK."

4.	Select the ASP Calibration

5.	Proceed with the test according to the screen introductions.

6.	Select "EPS Variant Coding".

7.	Proceed with the test according to the screen introductions.

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