Kia Cadenza: Electric Power Steering / Description and Operation
•
|
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 controls the motor operation according to
information received from the each sensor and CAN. (Controller Area
Network) |
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- Wrong welding point- Broken PCB- Damaged precise parts
|
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- Malfunction of EPS
| 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- Avoid drowning
|
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.
Components
1. Steering column2. ECU3. Motor4. Steering gear box
...
Other information:
Special Service Tools
Tool (Number and name)IllustrationUseCrankshaft front oil seal installer(09231-3C100)Installation of the front oil sealRing gear stopper(09231-2B100)Removal and installation of crankshaft pulley boltRing gear stopperA : (09231-3D100)B : (09231-2W100)Removal and installatio ...
Removal
[Lower oil pan]
1.
Remove the engine room under cover.
(Refer to Engine And Transaxle Assembly - "Engine Room Under Cover")
2.
Drain the engine oil.
(Refer to Lubrication System - "Engine Oil")
3.
Remove the lower oil pan (A).
Insert the blade of SST(09215-3C000) between t ...