Nissan Sentra Service Manual: Component parts

Component Parts Location

1. EPS control unit (view with steering column removed from vehicle)

2. EPS motor (view with steering column removed from vehicle)

3. Torque sensor (view with steering column removed from vehicle)

4. ABS actuator and electric unit (control unit)

5. ECM

6. EPS warning lamp (In combination meter)

7. Steering angle sensor (view with steering wheel removed)

Component Description

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

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.