Hyundai Accent (HC): Motor Driven Power Steering / Description and Operation
- Description
MDPS (Motor Driven Power Steering) system uses an electric motor to
assist the steering force and it is an engine operation independent
steering system.MDPS 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 (Torque Sensor, Fail-safe relay, etc.) of the MDPS
system are located inside the steering column ＆ MDPS unit assembly and
the steering column ＆ MDPS unit assembly must not be disassemble to
inspect or replace them.
- Operation
Note With Regard to diagnosis
| Trouble factor | Check item | Trouble symtom | Explanation | Note |
| Drop, impact, and overload | Motor | Abnormal noise | | – | Visable or unvisable damage can occur.The steering wheel could pull to one side by using the dropped parts. |
| – | Precise parts of motor/ECU are sensitive to vibration and impact. |
| – | Overload can cause unexpected damage |
| | – | Do not use the impacted MDPS. |
| – | Do not overload each parts. |
|
| ECU | Circuit damage
|
| Torque sensor | Insufficient steering effort | Overload to INPUT shaft can cause malfunction of the torque sensor | | – | Do not impact the connecting parts (When inserting and torquing) |
| – | Use the specified tool to remove the steering wheel. (Do not hammer on it) |
| – | Do not use the impacted MDPS |
|
| Shaft | Insufficient steering effort (Uneven between LH and RH) | | Do not use the impacted MDPS |
| Pull/Dent | Harness | | – | Malfunction-impossible power operation |
| Disconnection between harness connecting portion and harness | Do not overload the harness |
| Abnormal storage temperature | Motor/ECU | Abnormal steering effort by improper operation of the motor/ECU | | – | Waterproof at the normal condition |
| – | Even a little moisture can cause malfunction of the precise parts of the motor/ECU |
| | – | Keep the normal temperature and proper moisture, while storaging |
|
Other information:
Hyundai Accent (HC) (2017 - 2022) Service Manual: Smart Key Diagnostic
- Inspection
Self Diagnosis With Scan Tool
It will be able to diagnose defects of SMART KEY system with Diagnostic
tool quickly. Diagnostic tool can operates actuator forcefully,
input/output value monitoring and self diagnosis.The following three
features will be major problem in SMART KEY system.1.Problem in SMART KEY unit input.
2.Problem in SMART KEY unit.
Hyundai Accent (HC) (2017 - 2022) Service Manual: Water pump
- Components
1. Water pump pulley2. Water pump 3. Water pump gasket
- Removal
1.Remove the engine room under cover.(Refer to Engine and Transaxle Assembly - "Engine Room Under Cover")
2.Drain the coolant. (Refer to Cooling System - "Coolant")
3.Remove the drive belt. (Refer to Timing System - "Drive Belt")
4.Remove the water pump pulley (A).
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