Nissan Sentra Service Manual: Component parts

Nissan Sentra Service Manual / Steering / Steering control system / System description / Component parts

Component Parts Location

EPS control unit (view with steering column removed from vehicle)
EPS motor (view with steering column removed from vehicle)
Torque sensor (view with steering column removed from vehicle)
ABS actuator and electric unit (control unit)
ECM
EPS warning lamp (In combination meter)
Steering angle sensor (view with steering wheel removed)

Component Description

Components parts	Reference
EPS control unit	STC-6, "EPS Control Unit"
EPS motor	STC-6, "EPS Motor, Torque Sensor, Reduction Gear"
Torque sensor	STC-6, "EPS Motor, Torque Sensor, Reduction Gear"
Reduction gear	STC-6, "EPS Motor, Torque Sensor, Reduction Gear"
EPS warning lamp	STC-9, "WARNING/INDICATOR/CHIME LIST : Warning Lamp/ Indicator Lamp"
ECM	Transmits mainly the following signals to EPS control unit via CAN communication. Engine status signal
ABS actuator and electric unit (control unit)	Transmits mainly the following signal to EPS control unit via CAN communication. Vehicle speed signal (ABS)
Combination meter	Transmits mainly the following signal to EPS control unit via CAN communication. Vehicle speed signal (METER) Turns ON the EPS warning lamp according to the signal from EPS control unit via CAN communication.

EPS Control Unit

EPS control unit (1) is installed to steering column assembly.
EPS control unit performs an arithmetical operation on data, such as steering wheel turning force (sensor signal) from the torque sensor, vehicle speed signal, etc. Then it generates an optimum assist torque signal to the EPS motor according to the driving condition.
EPS control unit decreases the output signal to EPS motor while extremely using the power steering function (e.g., full steering) consecutively for protecting EPS motor and EPS control unit (Overload protection control).

EPS Motor, Torque Sensor, Reduction Gear

EPS Motor, Torque Sensor, Reduction Gear

EPS motor (1), torque sensor (2) and reduction gear (3) are installed to steering column assembly.

EPS MOTOR

EPS MOTOR

EPS motor provides the assist torque by the control signal from EPS control unit.

TORQUE SENSOR

Torque sensor detects the steering torque, and transmits the signal to EPS control unit.

REDUCTION GEAR

Reduction gear increases the assist torque provided from EPS motor with worm gears, and outputs to the column shaft.

System

EPS system EPS SYSTEM : System Description SYSTEM DIAGRAM DESCRIPTION EPS control unit performs an arithmetical operation on data, such as steering wheel turning force (sensor signal ...

Other materials:

Diagnosis system (bcm) (without intelligent key system)
Common item COMMON ITEM : CONSULT Function (BCM - COMMON ITEM) APPLICATION ITEM CONSULT performs the following functions via CAN communication with BCM. SYSTEM APPLICATION BCM can perform the following functions. Wiper Wiper : consult function (bcm - wiper) DATA MONITOR ACTIVE TES ...

Diagnosis system (BCM)
Common item Common item : consult function (bcm - common item) Application item Consult performs the following functions via can communication with bcm. Direct diagnostic mode Description Ecu identification The bcm part number is displayed. Self Diagnostic Result ...

Removal and installation
EPS control unit Exploded View Steering column assembly EPS control unit Bracket plate Front Removal and Installation REMOVAL CAUTION: Disconnect battery negative terminal before starting operations. Do not shock EPS control unit, e.g. drop or hit. Do not ...