Ford Fiesta: Power Steering / Power Steering - Overview. Description and Operation
Overview
The EPAS
system provides steering assist to the driver by replacing the
conventional, hydraulic pump system with an electric motor coupled to
the steering shaft. The system is controlled by the PSCM
which senses the steering effort using sensors mounted between the
steering column shaft and the steering gear. Steering assist is provided
in proportion to steering effort and vehicle speed.
System Operation
System Diagram
Item
Description
1
EPAS column
2
HS-CAN
3
EPAS motor
4
Steering shaft position sensor
5
Steering shaft torque sensor
6
PSCM
7
IPC
8
ABS module
9
PCM
Network Message Chart
..
Other information:
Overview
The EEC system provides optimum control of the engine through the
enhanced capability of the PCM . The EEC system also has an OBD
monitoring system with features and functions to meet federal
regulations on exhaust emissions.
The EEC system has two major divisions: hardware and software. The
hardware includes the PCM , sensors, switches, actuators, solenoids, and
interconnec..
Repair
WARNING:
Service actions on vehicles equipped with electronic parking
brakes may cause unexpected parking brake application, which could
result in injury to hands or fingers. Put the electronic parking brake
system into service mode prior to servicing or removing rear brake
components. Failure to follow this instruction may result in serious
personal injury.
&..
Categories
Preliminary Inspection
Verify the customer concern by carrying out a road test on a
smooth road. If any vibrations are apparent, Refer to the Symptom
Chart: NVH.
To maximize tire performance, inspect for signs of incorrect
inflation and uneven wear, which may indicate a need for balancing,
rotation or front suspension alignment.
Correct tire pressure and driving techniques have an
important influence on tire life. Heavy cornering, excessively rapid
acceleration and unnecessary sharp braking increase tire wear.
Correct
tire pressure and driving techniques have an important influence on
tire life. Heavy cornering, exce
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