| 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 EPS.
|
| -
|
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 EPS
|
|
Shaft
|
Insufficient steering effort (Uneven between LH and RH)
|
|
Do not use the impacted EPS
|
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
|
|
EPS (Electric power steering, Column assist type) system uses an electric
motor to assist the steering force and it is an engine operation independent
steering system.
EPS control module ...
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 ...
Hyundai Elantra MD/UD: Operation
