Hyundai i20 Quiz
Steering System

Repair Procedures

In this manual: Steering System
General Information — 17Engine Mechanical System — 79Engine Electrical System — 50Emission Control System — 22Engine/Fuel Control System — 107Clutch System — 27MANUAL TRANSMISSION SYSTEM — 21Drive Shaft and Axle — 18Suspension System — 29Steering System — 21Restraint — 41Braking System — 53Body Work (Interior and Exterior) — 190Body Electrical System — 181Heating, Ventilation and Air Conditioning — 58
4steps
~24min
2/5difficulty
Done 0 of 4

GENERAL INSPECTION

Before or after servicing the EPS system, perform the troubleshooting procedure and check as follows. Compare the system condition with the normal condition in the table below, and if an abnormal symptom is found, apply the necessary tool and perform the inspection.
Test Conditions Normal condition: The motor should not provide steering assist.
Symptom Possible Cause REMEDY
Ignition off The motor provides power steering assist. ASP is not calibrated. Perform ASP calibration using the scan tool.
Ignition Power Check the ignition power supply line.

Test Conditions Normal condition: The motor should not provide steering assist, and the warning lamp is illuminated.
Symptom Possible Cause REMEDY
Ignition "ON" / Engine "OFF" The motor provides power steering assist. ASP is not calibrated. Perform ASP calibration using the scan tool.
CAN signal from EMS is not received. Check the CAN line.
The warning lamp does not illuminate. Instrument Cluster Malfunction Check the instrument cluster and its harness.

Test Conditions Normal condition: The motor provides steering assist, and the warning lamp does not illuminate.
Symptom Possible Cause REMEDY
Ignition "ON" / Engine "ON" The warning lamp is illuminated, and the motor does not provide steering assist. EPS (Constant Hot) and Ignition Power Malfunction Check the connector and harness of the EPS (Constant Hot) and the ignition power supply line.
The system detects a diagnostic trouble code. Perform a self-diagnosis using the scan tool, then repair or replace as necessary.
The warning lamp is illuminated, and the motor provides steering assist. ASP is not calibrated. Perform ASP calibration using the scan tool.
CAN communication between the EPS and the instrument cluster is faulty. Check the CAN line.

ASP: Absolute Steering Position CAN: Controller Area Network EMS: Engine Management SystemBe careful when calibrating ASP (Absolute Steering Position) or EPS Type Recognition.
  • Before calibration, make sure the battery is fully charged before ASP or EPS Type Recognition.
  • Be careful not to disconnect the cables connected to the vehicle or the scan tool during ASP calibration or EPS Type Recognition.
  • When ASP calibration or EPS Type Recognition is completed, turn the ignition off, wait a few seconds, then start the engine to confirm normal vehicle operation.
ASP Calibration
  1. Select "Steering Wheel Angle Sensor".
  2. Perform the test according to the instructions on the screen.
  3. Select "EPS Type Recognition".
  4. Perform the test according to the instructions on the screen.
EPS Type Recognition Procedure

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A quick Hyundai i20 quiz: every answer comes with an explanation and a link to the manual page.