Nissan Sentra Service Manual: Service Notice and Precautions for EPS System
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"
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:
Basic inspection
Diagnosis and repair workflow
Work Flow
Detailed flow
1.Interview from the customer
Clarify customer complaints before inspection. First of all,
perform an interview utilizing stc-20, "diagnostic
work sheet" and reproduce symptoms as well as fully understand it. Ask customer
abou ...
Vehicle load capacity
Do not exceed the load limit of your vehicle
shown as “The combined weight of
occupants and cargo” on the Tire and
Loading Information label. Do not exceed
the number of occupants shown as
“Seating Capacity” on the Tire and Loading
Information label.
To get “the combined weight of ...
System
Tire pressure monitoring system
TIRE PRESSURE MONITORING SYSTEM : System Diagram
TIRE PRESSURE MONITORING SYSTEM : System Description
The BCM has pressure judgment and trouble diagnosis functions. When the
BCM detects low inflation pressure
or another unusual symptom, the low tire pr ...
