1993 FORD MONDEO maintenance reset

5Undo the sensor’s retaining screw and
withdraw the sensor. The sensor’s bracket
cannot be unbolted from the cylinder
block/crankcase unless the transmission and
flywheel/driveplate have been removed (see
Chapter 2).
6Refitting is the reverse of the removal
procedure.
General information
The charging system includes the
alternator, an internal voltage regulator, a no-
charge (or “ignition”) warning light, the
battery, and the wiring between all the
components. The charging system supplies
electrical power for the ignition system, the
lights, the radio, etc. The alternator is driven
by the auxiliary drivebelt at the front (right-
hand end) of the engine.
The purpose of the voltage regulator is to
limit the alternator’s voltage to a preset value.
This prevents power surges, circuit overloads,
etc., during peak voltage output.
The charging system doesn’t ordinarily
require periodic maintenance. However, the
drivebelt, battery and wires and connections
should be inspected at the intervals outlined
in Chapter 1.
The dashboard warning light should come
on when the ignition key is turned to positions
“II” or “III”, then should go off immediately the
engine starts. If it remains on, or if it comes on
while the engine is running, there is a
malfunction in the charging system (see
Section 11). If the light does not come on
when the ignition key is turned, and the bulb is
sound (see Chapter 12), there is a fault in the
alternator.
Precautions
Be very careful when making electrical
circuit connections to a vehicle equipped with
an alternator, and note the following:
(a) When reconnecting wires to the alternator
from the battery, be sure to note the
polarity.
(b) Before using arc-welding equipment to
repair any part of the vehicle, disconnect
the wires from the alternator and the
battery terminals.
(c) Never start the engine with a battery
charger connected.
(d) Always disconnect both battery leads
before using a battery charger.
(e) The alternator is driven by an engine
drivebelt which could cause serious injury
if your hand, hair or clothes become
entangled in it with the engine running.
(f) Because the alternator is connected
directly to the battery, it could arc or
cause a fire if overloaded or shorted-out.
(g) Wrap a plastic bag over the alternator,
and secure it with rubber bands, beforesteam-cleaning or pressure-washing the
engine.
(h) Never disconnect the alternator terminals
while the engine is running.
1If a malfunction occurs in the charging
circuit, don’t automatically assume that the
alternator is causing the problem. First check
the following items:
(a) Check the tension and condition of the
auxiliary drivebelt - renew it if it is worn or
deteriorated (see Chapter 1).
(b) Ensure the alternator mounting bolts and
nuts are tight.
(c) Inspect the alternator wiring harness and
the electrical connections at the
alternator; they must be in good
condition, and tight.
(d) Check the large main fuses in the engine
compartment (see Chapter 12). If any is
blown, determine the cause, repair the
circuit and renew the fuse (the vehicle
won’t start and/or the accessories won’t
work if the fuse is blown).
(e) Start the engine and check the alternator
for abnormal noises - for example, a
shrieking or squealing sound may indicate
a badly-worn bearing or brush.
(f) Make sure that the battery is fully-charged
- one bad cell in a battery can cause
overcharging by the alternator.
(g) Disconnect the battery leads (negative
first, then positive). Inspect the battery
posts and the lead clamps for corrosion.
Clean them thoroughly if necessary (see
Section 3 and Chapter 1). Reconnect the
lead to the negative terminal.
(h) With the ignition and all accessories
switched off, insert a test light between
the battery negative post and the
disconnected negative lead clamp:
(1) If the test light does not come on, re-
attach the clamp and proceed to the next
step.
(2) If the test light comes on, there is a short
in the electrical system of the vehicle. The
short must be repaired before the
charging system can be checked.
(3) To find the short, disconnect the
alternator wiring harness:
(a) If the light goes out, the alternator is
at fault.
(b) If the light stays on, remove each fuse
until it goes out - this will tell you
which component is short-circuited.
2Using a voltmeter, check the battery
voltage with the engine off. It should be
approximately 12 volts.
3Start the engine and check the battery
voltage again. Increase engine speed until the
voltmeter reading remains steady; it should
now be approximately 13.5 to 14.6 volts.
4Switch on as many electrical accessories
(eg the headlights, heated rear window andheater blower) as possible, and check that the
alternator maintains the regulated voltage at
around 13 to 14 volts. The voltage may drop
and then come back up; it may also be
necessary to increase engine speed slightly,
even if the charging system is working
properly.
5If the voltage reading is greater than the
specified charging voltage, renew the voltage
regulator (see Section 13).
6If the voltmeter reading is less than that
specified, the fault may be due to worn
brushes, weak brush springs, a faulty voltage
regulator, a faulty diode, a severed phase
winding, or worn or damaged slip rings. The
brushes and slip rings may be checked (see
Section 13), but if the fault persists, the
alternator should be renewed or taken to an
auto-electrician for testing and repair.
1Disconnect the battery negative (earth) lead
- see Section 1.
2Remove the plenum chamber (see Chap-
ter 4).
3Unscrew the nuts to disconnect the wiring
from the alternator (see illustration). If
additional working clearance is required, undo
the right-hand of the three screws securing
the wiring “rail” to the rear of the inlet
manifold.
4Jack up and support the front right-hand
corner of the vehicle. Remove the auxiliary
drivebelt and the engine oil filter - place a wad
of rag to soak up the spilled oil (see Chap-
ter 1). Rather than refit a used filter, you are
advised to drain the engine oil, and then to fit
a new filter and refill the engine with clean oil
on reassembly. Where an engine oil cooler is
fitted, it may prove necessary to remove this
as well, to provide the clearance necessary to
remove the alternator (see Chapter 2, Part A).
5Unscrew the two bolts securing the power
steering system pipes to the right-hand side
of the front suspension subframe. With the
front wheels in the straight-ahead position,
disconnect the right-hand track rod end from
the steering knuckle (see Chapter 10).
6Remove the mounting bolts and nuts (one
12 Alternator-
removal and refitting
11 Charging system- testing
10 Charging system - general
information and precautions
Engine electrical systems 5•5
5
12.3 Disconnecting alternator wiring
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Chapter 11 Bodywork and fittings
Body side-trim mouldings and adhesive emblems - removal
and refitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Bonnet - removal, refitting and adjustment . . . . . . . . . . . . . . . . . . . . 8
Bonnet lock - removal, refitting and adjustment . . . . . . . . . . . . . . . . 10
Bonnet release cable and lever - removal and refitting . . . . . . . . . . . 9
Boot lid - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Boot lid lock components - removal and refitting . . . . . . . . . . . . . . . 19
Bumpers - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Central locking system components - testing, removal and refitting . 23
Centre console - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . 30
Door - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Door handle and lock components - removal and refitting . . . . . . . . 14
Door inner trim panel - removal and refitting . . . . . . . . . . . . . . . . . . 11
Door window glass - removal and refitting . . . . . . . . . . . . . . . . . . . . 12
Door window regulator - removal and refitting . . . . . . . . . . . . . . . . . 13
Exterior mirror and glass - removal and refitting . . . . . . . . . . . . . . . . 16
Facia - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Glovebox - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Interior mirror - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . . 17
Interior trim panels - removal and refitting . . . . . . . . . . . . . . . . . . . . 29
Maintenance - bodywork and underframe . . . . . . . . . . . . . . . . . . . . 2
Maintenance - upholstery and carpets . . . . . . . . . . . . . . . . . . . . . . . 3
Major body damage - repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Minor body damage - repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Overhead console - removal and refitting . . . . . . . . . . . . . . . . . . . . . 31
Radiator grille - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . . 7
Seat belts - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Seats - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Sunroof - general information and adjustment . . . . . . . . . . . . . . . . . 26
Tailgate - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Tailgate lock components - removal and refitting . . . . . . . . . . . . . . . 22
Tailgate support strut - removal and refitting . . . . . . . . . . . . . . . . . . 21
Wheel arch liner - removal and refitting . . . . . . . . . . . . . . . . . . . . . . 34
Windscreen and fixed windows - removal and refitting . . . . . . . . . . 24
Torque wrench settingsNm lbf ft
Bonnet and tailgate hinges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 18
Boot lid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 7
Front seat mounting bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 28
Seat belt mounting nuts and bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 28
Bumper mounting nuts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 7
11•1
Easy,suitable for
novice with little
experienceFairly easy,suitable
for beginner with
some experienceFairly difficult,suitable
for competent DIY
mechanicDifficult,suitable for
experienced DIY
mechanicVery difficult,
suitable for expert DIY
or professional
Degrees of difficulty
Specifications Contents
11
The bodyshell and underframe on all
models is of all-steel welded construction,
incorporating progressive crumple zones at
the front and rear, and a rigid centre safety
cell. The bulkhead behind the engine
compartment incorporates crash grooves
which determine its energy-absorption
characteristics, and special beams to prevent
the intrusion of the front wheels into the
passenger compartment during a serious
accident. All passenger doors incorporate
side impact bars.
All sheet metal surfaces which are prone tocorrosion are galvanized. The painting
process includes a base colour which closely
matches the final topcoat, so that any stone
damage is not noticeable.
Hatchback, Saloon and Estate versions are
available. The front section of the vehicle up to
the “B” pillar is identical on all models.
Automatic seat belts are fitted to all models,
and the front seat belt stalks are mounted on
automatic tensioners (also known as
“grabbers”) (see illustration). In the event of a
serious front impact, a spring mass sensor
releases a coil spring which pulls the stalk
buckle downwards and tensions the seat belt.
It is not possible to reset the tensioner once
fired, and it must therefore be renewed.
In the UK, central locking is standard on all
1 General information
1.4 Automatic seat belt tensioner
1 Coil spring 3 Spring mass sensor
2 Lever system
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models (see illustration). In other countries, it
is available on certain models only. Where
double-locking is fitted, the lock mechanism
is disconnected (when the system is in use)
from the interior door handles, making it
impossible to open any of the doors or the
tailgate/bootlid from inside the vehicle. This
means that, even if a thief should break a side
window, he will not be able to open the door
using the interior handle. Models with the
double-locking system are fitted with a
control module located beneath the facia on
the right-hand side. In the event of a serious
accident, a crash sensor unlocks all doors if
they were previously locked.
Many of the procedures in this Chapter
require the battery to be disconnected. Refer
to Chapter 5, Section 1 first.
The general condition of a vehicle’s
bodywork is the one thing that significantly
affects its value. Maintenance is easy, but
needs to be regular. Neglect, particularly after
minor damage, can lead quickly to further
deterioration and costly repair bills. It is
important also to keep watch on those parts
of the vehicle not immediately visible, for
instance the underside, inside all the wheel
arches, and the lower part of the engine
compartment.
The basic maintenance routine for the
bodywork is washing - preferably with a lot of
water, from a hose. This will remove all the
loose solids which may have stuck to the
vehicle. It is important to flush these off in
such a way as to prevent grit from scratching
the finish. The wheel arches and underframe
need washing in the same way, to remove any
accumulated mud, which will retain moisture
and tend to encourage rust. Paradoxically
enough, the best time to clean the underframe
and wheel arches is in wet weather, when the
mud is thoroughly wet and soft. In very wet
weather, the underframe is usually cleaned of
large accumulations automatically, and this is
a good time for inspection.
Periodically, except on vehicles with a wax-
based underbody protective coating, it is a
good idea to have the whole of the
underframe of the vehicle steam-cleaned,
engine compartment included, so that a
thorough inspection can be carried out to see
what minor repairs and renovations are
necessary. Steam-cleaning is available at
many garages, and is necessary for the
removal of the accumulation of oily grime,
which sometimes is allowed to become thick
in certain areas. If steam-cleaning facilities are
not available, there are some excellent grease
solvents available which can be brush-
applied; the dirt can then be simply hosed off.
Note that these methods should not be used
on vehicles with wax-based underbodyprotective coating, or the coating will be
removed. Such vehicles should be inspected
annually, preferably just prior to Winter, when
the underbody should be washed down, and
any damage to the wax coating repaired.
Ideally, a completely fresh coat should be
applied. It would also be worth considering
the use of such wax-based protection for
injection into door panels, sills, box sections,
etc, as an additional safeguard against rust
damage, where such protection is not
provided by the vehicle manufacturer.
After washing paintwork, wipe off with a
chamois leather to give an unspotted clear
finish. A coat of clear protective wax polish
will give added protection against chemical
pollutants in the air. If the paintwork sheenhas dulled or oxidised, use a cleaner/polisher
combination to restore the brilliance of the
shine. This requires a little effort, but such
dulling is usually caused because regular
washing has been neglected. Care needs to
be taken with metallic paintwork, as special
non-abrasive cleaner/polisher is required to
avoid damage to the finish. Always check that
the door and ventilator opening drain holes
and pipes are completely clear, so that water
can be drained out. Brightwork should be
treated in the same way as paintwork.
Windscreens and windows can be kept clear
of the smeary film which often appears, by the
use of proprietary glass cleaner. Never use
any form of wax or other body or chromium
polish on glass.
2 Maintenance -
bodywork and underframe
11•2 Bodywork and fittings
1.5 Central locking component locations
1 Indicator light
2 Buzzer
3 Central locking module4 Infra-red receiver
5 Lock motor
6 Set/reset switch7 Ajar switch
8 Infra-red transmitter
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