Hyundai Elantra MD/UD: Repair procedures - Electric Power Steering - Steering System - Hyundai Elantra MD 2010-2015 Service manualHyundai Elantra MD/UD: 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 condition
 Normal condition: Motor must not supply steering assist.
Symptom
 Possible cause
 Remedy
IG Off
 Motor supplies steering assist.
 IG power supplies
 Inspect the IG power supply line.

Test condition
 Normal condition: Motor must not supply steering assist, Warning lamp is illuminated.
Symptom
 Possible cause
 Remedy
IG On/Engine Off
 Motor supplies steering assist.
 EMS CAN signal is not received.
 Inspect the CAN line.
Warning lamp is not illuminated.
 Cluster fault
 Inspect the cluster and cluster harness

Test condition
 Normal condition: Motor supplies steering assist, Warning lamp is not illuminated.
Symptom
 Possible cause
 Remedy
IG On/Engine On
 Warning lamp is illuminated and Motor dose not supply steering assist.
 EPS (Hot at all times) and IG power supply fault
 Inspect the connector and harness for EPS (Hot at all times) and IG power supply line.
DTC is detected by system.
 Perform the self test using a scan tool and repair or replace.
Warning lamp is illuminated and Motor supplies steering assist.
 CAN communication between EPS and cluster is fault.
 Inspect the CAN line.

CAN: Controller Area Network
EMS: Engine Management System
The following symptoms may be occurred 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.
Scan tool (Hi-Scan Pro) installation
1.
Attach the CAN interface module to the Hi-Scan Pro main body and securely tighten the two bolts.
2.
Install the CAN interface module to the Data Link Cable and securely tighten the two bolts.
EPS Type Recognition Procedure
1.
Select "EPS Variant Coding".
2.
Proceed with the test according to the screen introductions.

Operation
Note With Regard to diagnosis Trouble factor Check item Trouble symtom Explanation Note Drop, impact, and overl ...