Hyundai Elantra: Electric Power Steering / Repair procedures

Hyundai Elantra AD (2016-2020) Service Manual / Steering System / Electric Power Steering / Repair procedures

General Inspection

After or before servicing the EPS system, perform the troubleshooting and test procedure as follows. Compare the system condition with normal condition in the table below and if abnormal symptom is detected, perform necessary remedy and inspection.

Test Conditions		Symptoms	Assist Time	Warning light	Cause	Inspection Item
IG ON/ Engine ON/ Stationary>IG OFF/ Engine OFF/ Stationary		Steering assist failure	-	-	-	Normal
		Steering assist working	120 seconds	Light is on	IG power is supplied even when the IG is switched off. Steering angle is not initialized	Check IG power line Use a scan tool to initialize steering angle
			120 seconds	Light is off	IG power is supplied even when the IG is switched off. Steering angle is not initialized &Failure in cluster.	Check cluster wiring line Check Ignition power line Use a scan tool to initialize steering angle
			70 seconds	Light is on	CAN BUS OFF or No EMS signals received	Check CAN communication line
			70 seconds	Light is off	(CAN BUS OFF or No EMS signals received ) & Failure in cluster	Check CAN communication line Check cluster wiring line.
IG ON/ Engine OFF/ Stationary	-	Steering assist failure	-	-	-	-
		Steering assist working	Duration	Light is on	CAN BUS OFF or No EMS signals received	Check CAN communication line
			Duration	Light is off	(CAN BUS OFF or No EMS signals received) & Failure in cluster	Check CAN communication line Check cluster wiring line
	When engine is turned on, IG stays at On, but engine goes off		Duration	Light is on	CAN BUS OFF or EMS signals received	Check CAN communication line
			120 seconds	Light is off	-	Normal
IG ON/ Engine ON/ Stationary		Steering assist failure	-	Lght is on	Faults in power supply of EPS system and Ignition	Check the power lines of EPS system and Ignition
		Steering assist failure	-	Lght is on	Diagnostic trouble code (DTC) appears	Use scanner to diagnose and troubleshoot
		Steering assist working	-	-	-	Normal
		Steering assist working	-	Lght is on	Diagnostic trouble code (DTC) appears	Use scanner to diagnose and troubleshoot

IG : Ignition

ASP : Absolute Steering Position

CAN : Controller Area Network

EMS : Engine Management System

ASP (Absolute Steering Position) calibration or EPS type recognition

•	Check if the battery is fully charged before ASP calibration or EPS type recognition.

•	Be careful not to disconnect any cables connected to the vehicle or scan tool during ASP calibration or EPS type recognition.

•	When the ASP calibration or EPS type recognition is completed, turn the ignition switch off and wait for several seconds, then start the engine to confirm normal operation of the vehicle.

ASP Calibration

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 "system", select the "ASP Calibration" on GDS vehicle selection screen.

EPS Type Recognition

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 "system", select the "EPS Type Recognition" on GDS vehicle selection screen.

Components and Components Location

Components Location 1. Steering wheel2. Steering column3. MDPS ECU4. MDPS motor5. Tie rod end6. Bellows7. Steering gear box8. Dust cover9. Universal joint ...

Steering Column and Shaft Repair procedures

Removal 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 are placed in the straight ahead po ...

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