Hyundai Creta: Electric Power Steering / Repair procedures

Hyundai Creta GS 2014-2024 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 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.	① Check IG power line. ② Use scanner to initialize steering angle.
		Steering assist working	120 seconds	Light is off.	Failure in cluster or CAN signals	Check cluster, cluster lining, and CAN comm. line.
IG On / Engine Off / Stationary	-	Steering assist failure	-	-	-	Normal
		Steering assist working	120 seconds	Light is on.	Steering angle is not initialized.	Use scanner to initialize steering angle.
			120 seconds	Light is off.	Failure in cluster or CAN signals	Check cluster, cluster lining, and CAN comm. line.
	When engine is turned on, IG stays at On, but engine goes off.		120 seconds	Light is on.	No EMS signals received (CAN comm.)	Check CAN comm. line.
			120 seconds	Light is off.	Failure in cluster or CAN signals	Check cluster, cluster lining, and CAN comm. line.
IG On / Engine On / Stationary		Steering assist failure	-	Light is on.	Faults in power supply of EPS system and IG	Check the power lines of EPS system and IG
		Steering assist failure	-	Light is on.	Diagnostic trouble code (DTC) appears	Use scanner to diagnose and troubleshoot
		Steering assist working	-	-	-	Normal
		Steering assist working	-	Light is on.	Diagnostic trouble code (DTC) appears	Use scanner to diagnose and troubleshoot

ASP: Absolute Steering Position

CAN: Controller Area Network

EMS: Engine Management System

The following symptoms may occur during normal vehicle operation and if there is no EPS warning light illumination, it is not malfunction of EPS system.

•	After turning the ignition switch on, the steering wheel becomes heavier while it performs EPS system diagnostics, for about 2 seconds, then it becomes normal steering condition.

•	After turning the ignition switch on or off, EPS relay noise may occur but it is normal.

•	When it is steered, while the vehicle is stopped or in low driving speed, motor noise may occur but it is normal operating one.

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.

4.	Follow the process as below.

EPS Type Recognition

5.	Connect self-diagnosis connector(16pins) located in the lower of driver side crash pad to self-diagnosis device.

6.	Turn the self-diagnosis device after key is ON.

7.	After Selecting the "vehicle model" and "system", select the "EPS Type Recognition" on GDS vehicle selection screen.

8.	Follow the process as below.

Schematic diagrams

Schematic Diagrams Terminal function Type Pin No Description MDPS Power 1 Battery + ...

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