Nissan Sentra Service Manual: Service Notice and Precautions for EPS System
Check the following item when performing the trouble diagnosis.
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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.
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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.
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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.).
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Check if the wheel alignment is adjusted properly.
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Check if there is any damage or modification to suspension or body resulting in increased weight or altered ground clearance.
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Check if installation conditions of each link and suspension are proper.
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Check if the battery voltage is proper.
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Check connection conditions of each connector are proper.
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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"
The Supplemental Restraint System such as “AIR BAG” and “SEAT
BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the
dri ...
Other materials:
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 suspension assembly
Inspection
COMPONENT PART
Check the mounting conditions (looseness, backlash) of each component. Verify
the component conditions
(wear, damage) are normal.
Ball Joint Axial End Play
Set the front wheels in a straight-ahead position.
Hold the axle side of the transverse link, and check th ...
Precaution for Harness Repair
Solder the repair part, and wrap it with tape. [Twisted wire
fray
must be 110 mm (4.33 in) or less.]
Do not bypass the repair point with wire. (If it is
bypassed, the turnout
point cannot be separated and the twisted wire characteristics
are lost.)
...
