Check the following item when performing the trouble diagnosis.
Check any possible causes by interviewing the symptom and it′s condition from the customer if any malfunction, such as EPS warning lamp is turned ON, occurs.
Check if air pressure and size of tires are proper, the specified part is used for the steering wheel, and control unit is genuine part.
Check if the connection of steering column assembly and steering gear assembly is proper (there is not looseness of mounting bolts, damage of rods, boots or sealants, and leakage of grease, etc.).
Check if the wheel alignment is adjusted properly.
Check if there is any damage or modification to suspension or body resulting in increased weight or altered ground clearance.
Check if installation conditions of each link and suspension are proper.
Check if the battery voltage is proper.
Check connection conditions of each connector are proper.
Before connecting or disconnecting the EPS control unit harness connector, turn ignition switch “OFF” and disconnect battery ground cable. Because battery voltage is applied to EPS control unit even if ignition switch is turned “OFF”.
During quick steering, rasping noise may be heard from around the steering wheel. This is not a malfunction.
The noise is an operating noise of the EPS system under normal conditions. If the rasping noise occurs during slow steering, this may not be an operating noise of the system. In this case, it is necessary to find out the location of the noise and repair, if necessary.
Preparation
Commercial Service Tools

Precaution for Supplemental Restraint System (SRS) "AIR BAG"
and "SEAT BELT PRE-TENSIONER"Door handle
Front door handle
Front door handle : exploded view
Outside handle bracket
Front gasket
Outside handle
Intelligent key button
Door key cylinder rod
Inside handle assembly
Rear gasket
Front door handle : removal and installation - inside handle
REMOVAL
Remove front door ...
U1010 Control unit (CAN)
Description
Air bag diagnosis sensor performs self-tests on key ON. If CAN communication
failure within control unit is
detected, DTC is set.
DTC Logic
DTC DETECTION LOGIC
CONSULT name
DTC
DTC detecting condition
Repair order
CAN CONTROL UNIT FAILURE
U1010
CAN ...
Front grille
Exploded view
Core support cover
Front grille
Emblem
Pawl
Removal and installation
REMOVAL
Remove core support cover bolts (A), clips (B) and core support
cover (1).
Apply protective tape (A) to protect the components from damage.
Remove the front grille ...