Ford Fiesta (2011 year). Manual — part 77

Symptom Chart

Action

Possible Sources

Symptom

• CARRY OUT the Safety Belt

Component Test in this section.

• Safety belt retractor.

• Normal mode - occupant

restraint system inoperative.

Component Test

Poor Retraction

If a safety belt does not retract correctly, check that
the anchor covers and trim bezels are correctly
installed and not rubbing against the safety belt
webbing. Where necessary, check that the safety
belt webbing is not rubbing at one end of the
retractor cover slot and, if so, correct by loosening
the retaining bolt, aligning the retractor to centralize
the safety belt webbing and retighten the bolt.

The safety belts are “dual sensitive” which means
that they have:

• A vehicle motion sensor, which locks the safety

belt webbing under braking, cornering, on steep
hills and in adverse camber conditions.

• A webbing motion sensor, which locks when the

safety belt webbing is quickly extracted.

Both systems should be fully operational and can
be checked by the tests below:

Vehicle Motion Sensor Test

Either of the following two procedures may be used
to check correct operation of the vehicle motion
sensor. Both methods require two technicians but
note that technicians of larger than normal build
should not be asked to conduct these tests. This
is to avoid the possibility of a fully unrolled safety
belt webbing being mistaken for a correctly locked
safety belt retractor.

Test Method 1 (braking)

WARNING: It is important that during this
test, the driver and passenger allow the
safety belts to provide the restraint and do
not attempt to anticipate the sudden
deceleration. The steering wheel should
not be used as a brace. However, both
driver and passenger should prepare
themselves for the possibility that the
safety belt will not lock. The passenger
should hold their hands in front of them,
just clear of the instrument panel or front
seat backrest, depending on which safety

belt is being tested. Failure to follow these
instructions may result in personal injury.

• Select for this test a quiet or private stretch of

road. Make sure that the road is clear and that
full visibility is maintained at all times.

• Both driver and passenger should adopt a

normal, comfortable seating position. Both
occupants should wear the safety belts and the
safety belt webbing must be correctly adjusted,
with no slack.

• Proceed at a speed of 10 km/h (6 mph). Do not

exceed 10 km/h (6 mph) for this test.

• Apply the foot brake sharply to stop the vehicle.

If the vehicle motion sensitive lock mechanism
is operating correctly, the safety belt webbing
will lock and restrain the wearer.

• Conduct the test twice in each front and rear

passenger seat position.

• Any safety belt retractor which does not restrain

the wearer during this test must not be reused.
A new safety belt must be installed.

Test Method 2 (turning circle)

This method requires a flat open area of private
road, sufficient for the vehicle to be driven in a
continuous circle on full steering lock.

• The driver should wear the safety belt provided

and the belt webbing must be correctly adjusted,
with no slack.

• The passenger should occupy a rear seat with

the safety belt correctly adjusted, with no slack.

• Start the engine and, with the steering on full

right-hand lock, drive the vehicle in a continuous
circle at 16 km/h (10mph). Do not exceed 16
km/h (10 mph) for this test.

• When the speed is stable, the passenger should

attempt to slowly extract the safety belt webbing
from each safety belt retractor in turn. If the
vehicle motion sensitive lock mechanism is
operating correctly, it will not be possible to
extract the webbing.

• Any safety belt retractor from which it is possible

to extract the webbing during this test must not
be used. A new safety belt must be installed.

G1055906en

501-20A-

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Safety Belt System

501-20A-

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DIAGNOSIS AND TESTING

201

Static Test

With the vehicle stationary and on level ground
take firm hold of the safety belt webbing (on the
tongue side of the upper safety belt anchor) and
pull out quickly. The retractor should lock within
0.25 meter (10 inches), preventing further webbing
payout. Any safety belt retractor from which it is
possible to extract further webbing must not be
used. A new safety belt must be installed.

1. If the cause is not visually evident, verify the

symptom and refer to the

Ford diagnostic

equipment

to diagnose the system.

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Safety Belt System

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DIAGNOSIS AND TESTING

201

Front Safety Belt Retractor and Pretensioner

Removal

WARNINGS:

The supplemental restraint system (SRS)
is active for a certain length of time after
the power supply has been disconnected.
Wait for a minimum of 3 minutes before
disconnecting or removing any SRS
components.

Make sure that the vehicle electrical
system is fully depowered and no other
power source is connected.

NOTE: Removal steps in this procedure may
contain installation details.

1.

Refer to: Health and Safety Precautions (100-00

General Information, Description and
Operation).

Refer to:

Battery Disconnect and Connect

(414-01 Battery, Mounting and Cables,
General Procedures).

Refer to:

B-Pillar Trim Panel - 5-Door

(501-05

Interior Trim and Ornamentation, Removal
and Installation).

2. Torque: 45 Nm

E104702

3. Torque: 45 Nm

E104723

Installation

1. To install, reverse the removal procedure.

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Safety Belt System

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REMOVAL AND INSTALLATION

201

Front Safety Belt Buckle

Removal

NOTE: Removal steps in this procedure may
contain installation details.

1.

Refer to: Front Seat

(501-10 Seating, Removal

and Installation).

2.

E103543

3. Torque: 50 Nm

E103712

Installation

1. To install, reverse the removal procedure.

G1063178en

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Safety Belt System

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REMOVAL AND INSTALLATION

201