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:
Removal
NOTE:
Removal steps in this procedure may contain installation details.
NOTE:
Vehicles with touchscreen display shown, vehicles without touchscreen display similar.
Remove the instrument panel center upper trim panel.
Refer to: Instrument Panel Center Upper Trim Panel (501-12 Instrument Panel and Console, Removal and Installation).
NOTE:
..
System Operation
System Diagram - Gauges
Item
Description
1
Fuel pump assembly
2
ABS
3
HS-CAN
4
IPC
5
PCM
6
HS-CAN
Network Message Chart - Gauges
Module Network Input Messages - IPC
Broadcast M..
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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