Kia Sportage: Description and Operation | Repair procedures

 Description

EPS (Electric power steering, Column assist type) system uses an electric motor to assist the steering force and it is ail engine operation independent steering system.

EPS control module controls the motor operation according to information received from the each sensor and CAN (Controller Area Network), resulting in a more precise and timely control of steering assist than conventional engine-driven hydraulic systems.

Components (Steering Angle Sensor, Torque Sensor, Fail-safe relay, etc.) of the EPS system are located inside the steering column & EPS unit assembly.

The steering column & EPS unit assembly must not be disassemble to inspect.

The replace them.

Note With Regard to diagnosis

1. Do not impact the electronic parts, if they are dropped or impacted, replace them with new ones.

2. Avoid heat and moisture to the electronic parts.

3. Do not contact the connect terminal to avoid deformation and static electricity.

4. Do not impact the motor and torque sensor parts, if they are dropped or impacted, replace them with new ones.

5. The connector should be disconnected or connected with IG OFF.

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.

ASP: Absolute Steering Position

CAN: Controller Area Network

EMS: Engine Management System

CAUTION

If there is no EPS warning light illumination, then there is not malfuncion of EPS system.

The following symptoms may occur during normal vehicle operation.

• After turning the ignition switch on, the steering wheel becomes stiffer 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.
• While steered, when the vehicle is stopped or in low driving speed, motor noise may occur but it is normal operation.

Caution when 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.

Scan tool (Н�–-Scan Pro) installation

1. Attach the CAN interface module to the Н�–-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.

ASP Calibration Using GDS

1. Select "Steering Angle Sensor".

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

EPS Type Recognition Procedure

1. Select "EPS Variant Coding".

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

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