1993 FORD MONDEO radiator

7Disconnect the rear exhaust mounting
rubber, and support the exhaust system on an
axle stand.
8Remove the screws securing the wheel
arch liners to the rear bumper.
9Unscrew the bumper mounting nuts, and
withdraw the bumper rearwards from the
vehicle, at the same time disconnecting the
guides from the side pins (see illustration).
Refitting
Front and rear bumpers
10Refitting is a reversal of the removal
procedure. Make sure that the guides locate
correctly on the side pins.
Removal
1Support the bonnet in the open position.
2Using a Torx key, unscrew the radiator grille
mounting screws (see illustration).
3Unclip the radiator grille from the front
panel (see illustration).
Refitting
4Refitting is a reversal of the removal
procedure.
Removal
1Open the bonnet, and support it in the open
position using the stay.
2Disconnect the battery negative (earth) lead
(Chapter 5, Section 1).
3Prise out the clips from the insulator on the
underside of the bonnet, for access to the
windscreen washer hoses and engine
compartment light. It is not necessary to
completely remove the insulator.
4Disconnect the wiring from the engine
compartment light, and unclip the wiring from
the bonnet.5Unbolt the earth lead from the bonnet (see
illustration).
6Disconnect the windscreen washer hoses
from the bottom of the jets, and unclip the
hose from the bonnet.
7To assist in correctly realigning the bonnet
when refitting it, mark the outline of the hinges
with a soft pencil. Loosen the two hinge
retaining bolts on each side (see illustration).
8With the help of an assistant, unscrew the
four bolts, release the stay, and lift the bonnet
from the vehicle (see illustration).
Refitting
9Refitting is a reversal of the removal
procedure. Position the bonnet hinges within
the outline marks made during removal, but if
necessary alter its position to provide a
8 Bonnet - removal,
refitting and adjustment
7 Radiator grille-
removal and refitting
Bodywork and fittings 11•5
11
7.3 Unclipping the radiator grille from the
front panel
8.5 Earth lead and washer hoses on the
underside of the bonnet
6.9 Rear bumper mounting nuts7.2 Removing a radiator grille mounting
screw
8.7 Mark around the bonnet hinges with a
soft pencil before removal
6.4 Screw (arrowed) securing the wheel
arch liner to the front bumper6.5A Front bumper mounting bolt
(arrowed)6.5B Disconnecting the front bumper from
the side guides
procarmanuals.com

11.3B . . . and disconnect the multi-plug
uniform gap all round. Adjust the rear height
of the bonnet by repositioning it on the
hinges. Adjust the front height by
repositioning the lock (see Section 10) and
turning the rubber buffers on the engine
compartment front cross panel up or down to
support the bonnet (see illustration).
Removal
1With the bonnet open, disconnect the
battery negative (earth) lead (Chapter 5,
Section 1).
2Working inside the vehicle, remove the trim
from the “B” pillar, and pull off the doorweatherstrips from the bottom of the door
apertures.
3Remove the clips and screws, and
withdraw the lower side trim, to give access to
the bonnet release lever (see illustration).
4Release the outer cable from the lever
bracket.
5Unscrew and remove the lever mounting
screws, and turn the lever clockwise through
a quarter-turn to disconnect it from the cable.
6Remove the radiator grille (Section 7). Also
remove the backing panel from the engine
compartment front crossmember.
7Release the inner and outer cables from the
lock.
8Withdraw the cable from the engine
compartment, feeding it through the front
crossmember, and removing the grommet
from the bulkhead.
Refitting
9Refitting is a reversal of the removal
procedure.
Removal
1Remove the radiator grille (Section 7).
2Release the inner and outer cables from the
bonnet lock.
3Mark the position of the lock on the
crossmember, then unscrew the mounting
nuts and withdraw the lock.
Refitting and adjustment
4Refitting is a reversal of the removal
procedure, starting by positioning the lock as
noted before removal.
5If the front of the bonnet is not level with the
front wings, the lock may be moved up or
down within the mounting holes. After making
an adjustment, raise or lower the rubber
buffers to support the bonnet correctly.
Removal
1Disconnect the battery negative (earth) lead
(Chapter 5, Section 1).
2Carefully prise out the plastic cover with a
small screwdriver. Remove the screw, and
11 Door inner trim panel -
removal and refitting
10 Bonnet lock - removal,
refitting and adjustment
9 Bonnet release cable and
lever - removal and refitting
11•6 Bodywork and fittings
8.8 Removing the bonnet8.9 Buffer for adjustment of the bonnet
front height9.3 Bonnet release lever
11.2B . . . remove the screw . . .11.2A Prise out the plastic cover . . .
11.2C . . . and withdraw the bezel from the
inner door handle11.3A Remove the window operating
switch . . .
procarmanuals.com

adhesive bond between the moulding or
emblem and the panel (see illustration).
2Thoroughly clean all traces of adhesive
from the panel using
methylated spirit, and allow the location to
dry.
Refitting
3Peel back the protective paper from the
rear face of the new moulding or emblem.
Carefully fit it into position on the panel
concerned, but take care not to touch the
adhesive. When in position, apply hand
pressure to the moulding/emblem for a short
period, to ensure maximum adhesion to the
panel.1The sunroof should operate freely, without
sticking or binding, as it is opened and
closed. When in the closed position, check
that the panel is flush with the surrounding
roof panel.
2If adjustment is required, open the sun
blind, but leave the glass panel shut. Unscrew
and remove the three lower frame-to-glass
panel retaining screws. Slide the lower frame
back into the roof.
3Loosen the central and front securing
screws. Adjust the glass roof panel so that it is
flush at its front edge with the roof panel, then
retighten the securing screws.
4Pull the lower frame forwards, and insert
and tighten its retaining screws to complete.
Removal
Front seat
1Release the seat belt, and slide the seat
fully forwards.
2Using a Torx key, undo the screws and
remove the rear mounting trims, then unscrew
the rear mounting bolts (see illustrations).
3Slide the seat fully rearwards.
4Where electric seats are fitted, disconnectthe battery negative (earth) lead (Chapter 5,
Section 1). Disconnect the seat wiring multi-
plugs (see illustration).
5Unscrew the front mounting bolts, and
remove the seat from the vehicle (see
illustration).
Rear seat cushion
6Fold the rear seat cushion forwards. (Note
that, on some models, the seat cushion is
held in place by screws which must be
removed first.) Using a Torx key, unscrew and
remove the mounting bolts from the hinges on
each side (see illustration).
7Withdraw the seat cushion from the vehicle.
Rear seat backrest
8Fold the rear seat cushion and both
backrests forwards.
9Unclip the backrest rear trims, where fitted,
and raise them.
10Using a Torx key, unscrew the mounting
bolts (see illustration).
11Withdraw the backrest from inside the
vehicle.
Rear seat side bolster
12Fold the rear seat backrest forwards.
13On low-series models, remove the screw
and pull the bolster forwards to disengage the
clips. On high-series models, simply pull the
bolster upwards to disengage the clips.
Refitting
14Refitting is a reversal of the removal
procedure, but tighten the mounting bolts to
the specified torque.
27 Seats - removal and refitting
26 Sunroof - general
information and adjustment
11•18 Bodywork and fittings
25.1 Using a length of cord to remove the
emblem from the radiator grille27.2A Unscrew the Torx-headed
screws . . .27.2B . . . and remove the mounting trims
for access to the front seat rear mounting
bolts
27.5 Front seat front mounting bolt
27.4 Disconnecting an electric seat multi-
plug
27.6 Rear seat cushion hinge bolt27.10 Rear seat backrest mounting bolts
procarmanuals.com

Chapter 12 Body electrical system
Air bag clock spring - removal and refitting . . . . . . . . . . . . . . . . . . . 30
Air bag control module - removal and refitting . . . . . . . . . . . . . . . . . 29
Air bag unit (driver’s side) - removal and refitting . . . . . . . . . . . . . . . 28
Anti-theft alarm system - general information . . . . . . . . . . . . . . . . . . 20
Auxiliary warning system - general information and
component renewal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Battery - check, maintenance and charging . . . . . . . . See Chapter 1
Battery - removal and refitting . . . . . . . . . . . . . . . . . . . See Chapter 5
Bulbs (exterior lights) - renewal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Bulbs (interior lights) - renewal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Clock - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Compact disc player - removal and refitting . . . . . . . . . . . . . . . . . . . 25
Cruise control system - general information . . . . . . . . . . . . . . . . . . . 21
Electrical fault finding - general information . . . . . . . . . . . . . . . . . . . 2
Electrical system check . . . . . . . . . . . . . . . . . . . . . . . . See Chapter 1
Exterior light units - removal and refitting . . . . . . . . . . . . . . . . . . . . . 7
Fuses, relays and timer module - testing and renewal . . . . . . . . . . . 3
General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Headlight beam alignment - checking and adjustment . . . . . . . . . . 8
Headlight levelling motor - removal and refitting . . . . . . . . . . . . . . . 9Horn - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Instrument panel - removal and refitting . . . . . . . . . . . . . . . . . . . . . . 10
Instrument panel components - removal and refitting . . . . . . . . . . . 11
Radio aerial - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Radio/cassette player - coding, removal and refitting . . . . . . . . . . . 23
Radio/cassette player power amplifier - removal and refitting . . . . . 24
Speakers - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Speedometer drive cable - removal and refitting . . . . . . . . . . . . . . . 12
Stop-light switch - removal and refitting . . . . . . . . . . . See Chapter 9
Switches - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Tailgate wiper motor assembly - removal and refitting . . . . . . . . . . . 17
TCS inhibition switch - removal and refitting . . . . . . . . See Chapter 9
Trip computer module - removal and refitting . . . . . . . . . . . . . . . . . 18
Windscreen/tailgate washer system and wiper blade
check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Chapter 1
Windscreen/tailgate washer system components - removal
and refitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Windscreen wiper motor and linkage - removal and refitting . . . . . . 16
Wiper arms - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Fuses (auxiliary fusebox in engine compartment)
Note:Fuse ratings and circuits are liable to change from year to year. Consult the handbook supplied with the vehicle, or consult a Ford dealer,
for specific information.
Fuse No Rating Colour Circuit(s) protected
1 80 Black . . . . . . . . . . . . . . . . . . . . . . . . . . Power supply to main fusebox
2 60 Yellow . . . . . . . . . . . . . . . . . . . . . . . . . Radiator electric cooling fans
3 60 Yellow . . . . . . . . . . . . . . . . . . . . . . . . . Diesel engine glow plugs and/or ABS braking system
4 20 Yellow . . . . . . . . . . . . . . . . . . . . . . . . . Ignition system, or ignition and daytime running lights
5 30 Light green . . . . . . . . . . . . . . . . . . . . . . Heated windscreen (left-hand side)
6 30 Light green . . . . . . . . . . . . . . . . . . . . . . Heated windscreen (right-hand side)
7 30 Light green . . . . . . . . . . . . . . . . . . . . . . ABS braking system
8 30 Light green . . . . . . . . . . . . . . . . . . . . . . Air conditioning compressor/heated seats or air conditioning
compressor/daytime running lights
9 20 Light blue . . . . . . . . . . . . . . . . . . . . . . . ECU (petrol), Cold start solenoid (Diesel)
10 20 Light blue . . . . . . . . . . . . . . . . . . . . . . . Ignition switch
11 3 Violet . . . . . . . . . . . . . . . . . . . . . . . . . . ECU memory
12 15 Light blue . . . . . . . . . . . . . . . . . . . . . . . Horn and hazard flasher warning system
13 15 Light blue . . . . . . . . . . . . . . . . . . . . . . . Oxygen sensor
14 15 Light blue . . . . . . . . . . . . . . . . . . . . . . . Fuel pump
15 10 Red . . . . . . . . . . . . . . . . . . . . . . . . . . . Dipped beam headlight (right-hand side)
16 10 Red . . . . . . . . . . . . . . . . . . . . . . . . . . . Dipped beam headlight (left-hand side)
17 10 Red . . . . . . . . . . . . . . . . . . . . . . . . . . . Main beam headlight (right-hand side)
18 10 Red . . . . . . . . . . . . . . . . . . . . . . . . . . . Main beam headlight (left-hand side)
12•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
12
procarmanuals.com

Fuses (main fusebox in passenger compartment)
Note:Fuse ratings and circuits are liable to change from year to year. Consult the handbook supplied with the vehicle, or consult a Ford dealer,
for specific information.
Fuse Rating Colour Circuit(s) protected
19 7.5 Brown . . . . . . . . . . . . . . . . . . . . . . . . . Heated door mirrors
20 10 Black . . . . . . . . . . . . . . . . . . . . . . . . . . Front/rear wiper motor (circuit breaker)
21 30 Light green . . . . . . . . . . . . . . . . . . . . . . Front electric windows (only)
21 40 Orange . . . . . . . . . . . . . . . . . . . . . . . . . Front and rear electric windows
22 7.5 Brown . . . . . . . . . . . . . . . . . . . . . . . . . ABS module
23 15 Light blue . . . . . . . . . . . . . . . . . . . . . . . Reversing lights
24 15 Light blue . . . . . . . . . . . . . . . . . . . . . . . Stop-lights
25 20 Yellow . . . . . . . . . . . . . . . . . . . . . . . . . Central locking system/double-locking/anti-theft alarm
26 20 Yellow . . . . . . . . . . . . . . . . . . . . . . . . . Foglights
27 15 Light blue . . . . . . . . . . . . . . . . . . . . . . . Cigar lighter
28 30 Light green . . . . . . . . . . . . . . . . . . . . . . Headlight washer system
29 30 Light green . . . . . . . . . . . . . . . . . . . . . . Heated rear window
30 7.5 Brown . . . . . . . . . . . . . . . . . . . . . . . . . Interior lighting and auxiliary warning system
31 7.5 Brown . . . . . . . . . . . . . . . . . . . . . . . . . Instrument panel illumination
32 7.5 Brown . . . . . . . . . . . . . . . . . . . . . . . . . Radio
33 7.5 Brown . . . . . . . . . . . . . . . . . . . . . . . . . Front and rear sidelights (left-hand side)
34 7.5 Brown . . . . . . . . . . . . . . . . . . . . . . . . . Interior lighting and digital clock
35 7.5 Brown . . . . . . . . . . . . . . . . . . . . . . . . . Front and rear sidelights (right-hand side)
36 30 Light green . . . . . . . . . . . . . . . . . . . . . . Air bag
37 30 Light green . . . . . . . . . . . . . . . . . . . . . . Heater blower
38 7.5 Brown . . . . . . . . . . . . . . . . . . . . . . . . . Adaptive damping
Relays (auxiliary fusebox in engine compartment)
Relay Colour Circuit(s) protected
R1 Green . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Daytime running lights (left-hand-drive, but not all countries) or dim-
dip lights (UK)
R2 Black . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Radiator electric cooling fan (high speed)
R3 Blue (petrol) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Air conditioning cut-out
R3 Brown (Diesel) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Air conditioning in conjunction with Diesel engine
R4 Yellow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Windscreen heater time delay
R5 Dark green (petrol) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Radiator electric cooling fan (low speed)
R5 Black (Diesel) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Radiator electric cooling fan (low speed)
R6 Yellow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Starter solenoid
R7 Brown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Horns
R8 Brown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fuel pump
R9 White . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Dipped beam headlights
R10 White . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Main beam headlights
R11 Brown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ECU power supply (petrol), cold start (Diesel)
Relays (main fusebox in passenger compartment)
Relay Colour Circuit(s) protected
R12 White . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Interior, courtesy and footwell lights
R13 Yellow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Heated rear window
R14 Yellow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Heater blower
R15 Green . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Windscreen wiper motor
R16 Black . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ignition
Auxiliary relays (not in the fuseboxes)
Relay Colour Circuit(s) protected Location
R17 Black . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Diesel glow plug Battery tray
R18 Black . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . “One-touch down” Driver’s door
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . driver’s window relay
R19 Blue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Speed control cut-off Central fuse box bracket the
below instrument panel
R20 Blue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Headlight washer system Bulb module bracket
R21 Orange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Rear screen wiper interval Bulb module bracket
R22 White . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Foglights (left-hand-drive only) Interface module bracket
R23 Black . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Direction indicators Steering column
R24 White . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Anti-theft alarm (left-hand side) Door lock module bracket
R25 White . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Anti-theft alarm (right-hand side) Door lock module bracket
R26 Black . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Heated seats Door lock module bracket
12•2 Body electrical system
procarmanuals.com

compartment, but on Estate models, it is on
the right-hand side.
Some models are fitted with a headlight
levelling system, which is controlled by a knob
on the facia. On position “0”, the headlights
are in their base position, and on position “5”,
the headlights are in their maximum inclined
angle.
It should be noted that, when portions of
the electrical system are serviced, the cable
should be disconnected from the battery
negative terminal, to prevent electrical shorts
and fires.
Caution: When disconnecting the
battery for work described in the
following Sections, refer to
Chapter 5, Section 1.
Note:Refer to the precautions given in
“Safety first!” and in Section 1 of this Chapter
before starting work. The following tests relate
to testing of the main electrical circuits, and
should not be used to test delicate electronic
circuits (such as engine management systems,
anti-lock braking systems, etc), particularly
where an electronic control module is used.
Also refer to the precautions given in Chapter
5, Section 1.
General
1A typical electrical circuit consists of an
electrical component, any switches, relays,
motors, fuses, fusible links or circuit breakers
related to that component, and the wiring and
connectors which link the component to both
the battery and the chassis. To help to
pinpoint a problem in an electrical circuit,
wiring diagrams are included at the end of this
manual.
2Before attempting to diagnose an electrical
fault, first study the appropriate wiring
diagram, to obtain a complete understanding
of the components included in the particular
circuit concerned. The possible sources of a
fault can be narrowed down by noting if other
components related to the circuit are
operating properly. If several components or
circuits fail at one time, the problem is likely to
be related to a shared fuse or earth
connection.
3Electrical problems usually stem from
simple causes, such as loose or corroded
connections, a faulty earth connection, a
blown fuse, a melted fusible link, or a faulty
relay (refer to Section 3 for details of testing
relays). Visually inspect the condition of all
fuses, wires and connections in a problem
circuit before testing the components. Use
the wiring diagrams to determine which
terminal connections will need to be checked
in order to pinpoint the trouble-spot.
4The basic tools required for electrical fault-
finding include a circuit tester or voltmeter (a
12-volt bulb with a set of test leads can alsobe used for certain tests); an ohmmeter (to
measure resistance and check for continuity);
a battery and set of test leads; and a jumper
wire, preferably with a circuit breaker or fuse
incorporated, which can be used to bypass
suspect wires or electrical components.
Before attempting to locate a problem with
test instruments, use the wiring diagram to
determine where to make the connections.
5To find the source of an intermittent wiring
fault (usually due to a poor or dirty
connection, or damaged wiring insulation), a
“wiggle” test can be performed on the wiring.
This involves wiggling the wiring by hand to
see if the fault occurs as the wiring is moved.
It should be possible to narrow down the
source of the fault to a particular section of
wiring. This method of testing can be used in
conjunction with any of the tests described in
the following sub-Sections.
6Apart from problems due to poor
connections, two basic types of fault can
occur in an electrical circuit - open-circuit, or
short-circuit.
7Open-circuit faults are caused by a break
somewhere in the circuit, which prevents
current from flowing. An open-circuit fault will
prevent a component from working.
8Short-circuit faults are caused by a “short”
somewhere in the circuit, which allows the
current flowing in the circuit to “escape” along
an alternative route, usually to earth. Short-
circuit faults are normally caused by a
breakdown in wiring insulation, which allows a
feed wire to touch either another wire, or an
earthed component such as the bodyshell. A
short-circuit fault will normally cause the
relevant circuit fuse to blow.
Finding an open-circuit
9To check for an open-circuit, connect one
lead of a circuit tester or the negative lead of a
voltmeter either to the battery negative
terminal or to a known good earth.
10Connect the other lead to a connector in
the circuit being tested, preferably nearest to
the battery or fuse. At this point, battery
voltage should be present, unless the lead
from the battery or the fuse itself is faulty
(bearing in mind that some circuits are live
only when the ignition switch is moved to a
particular position).
11Switch on the circuit, then connect the
tester lead to the connector nearest the circuit
switch on the component side.
12If voltage is present (indicated either by
the tester bulb lighting or a voltmeter reading,
as applicable), this means that the section of
the circuit between the relevant connector
and the switch is problem-free.
13Continue to check the remainder of the
circuit in the same fashion.
14When a point is reached at which no
voltage is present, the problem must lie
between that point and the previous test point
with voltage. Most problems can be traced to
a broken, corroded or loose connection.
Finding a short-circuit
15To check for a short-circuit, first
disconnect the load(s) from the circuit (loads
are the components which draw current from
a circuit, such as bulbs, motors, heating
elements, etc).
16Remove the relevant fuse from the circuit,
and connect a circuit tester or voltmeter to the
fuse connections.
17Switch on the circuit, bearing in mind that
some circuits are live only when the ignition
switch is moved to a particular position.
18If voltage is present (indicated either by
the tester bulb lighting or a voltmeter reading,
as applicable), this means that there is a
short-circuit.
19If no voltage is present during this test,
but the fuse still blows with the load(s)
reconnected, this indicates an internal fault in
the load(s).
Finding an earth fault
20The battery negative terminal is
connected to “earth” - the metal of the
engine/transmission unit and the vehicle body
- and many systems are wired so that they
only receive a positive feed, the current
returning via the metal of the car body. This
means that the component mounting and the
body form part of that circuit. Loose or
corroded mountings can therefore cause a
range of electrical faults, ranging from total
failure of a circuit, to a puzzling partial failure.
In particular, lights may shine dimly (especially
when another circuit sharing the same earth
point is in operation), motors (eg wiper motors
or the radiator cooling fan motor) may run
slowly, and the operation of one circuit may
have an apparently-unrelated effect on
another. Note that on many vehicles, earth
straps are used between certain components,
such as the engine/transmission and the
body, usually where there is no metal-to-
metal contact between components, due to
flexible rubber mountings, etc.
21To check whether a component is
properly earthed, disconnect the battery (refer
to Chapter 5, Section 1) and connect one lead
of an ohmmeter to a known good earth point.
Connect the other lead to the wire or earth
connection being tested. The resistance
reading should be zero; if not, check the
connection as follows.
22If an earth connection is thought to be
faulty, dismantle the connection, and clean
both the bodyshell and the wire terminal (or
the component earth connection mating
surface) back to bare metal. Be careful to
remove all traces of dirt and corrosion, then
use a knife to trim away any paint, so that a
clean metal-to-metal joint is made. On
reassembly, tighten the joint fasteners
securely; if a wire terminal is being refitted,
use serrated washers between the terminal
and the bodyshell, to ensure a clean and
secure connection. When the connection is
2 Electrical fault finding -
general information
12•4 Body electrical system
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32Twist the bulbholder anti-clockwise using
a screwdriver, then remove the bulbholder
from the rear of the clock (see illustrations).
Heater control illumination
33Remove the heater control panel (Chapter
3), then twist the bulbholder anti-clockwise
and remove the bulb from the rear of the
panel.
Removal
1Disconnect the battery negative (earth) lead
(refer to Chapter 5, Section 1).
Headlight unit
2With the bonnet supported in its open
position, loosen (but do not remove) the screw
located above the front direction indicator.
3Withdraw the front direction indicator unit
forwards, and disconnect the wiring multi-
plug. Place the unit to one side.
4Disconnect the wiring multi-plug for the
headlight unit (see illustration).
5Remove the radiator grille as described in
Chapter 11.
6Remove the front bumper as described in
Chapter 11.
7The headlights fitted from new are a single
unit, joined by a plastic back-piece running
across the front of the vehicle. However, if it is
required to renew a headlight unit on one sideonly, the back-piece must first be removed
complete, then cut in half on the bench.
8Unscrew the mounting bolts from each side
of the headlight unit, and withdraw the unit
from the front of the vehicle (see
illustrations). Use a hacksaw to cut through
the centre of the headlight unit (ie between the
two headlights), and obtain a connecting kit
from a Ford dealer to attach the new unit.
9If necessary, the lens may be removed
separately by releasing the clips (see
illustrations). To remove the diffuser, release
the clips, then remove the rubber seal.
Front direction indicator
10With the bonnet supported in its open
position, loosen (but do not remove) the screw
7 Exterior light units -
removal and refitting
12•12 Body electrical system
6.32A Twist the bulbholder
anti-clockwise . . .6.32B . . . and remove it from the rear of
the clock7.4 Disconnecting the headlight unit
wiring multi-plug
7.8D Using a hacksaw to cut through the
middle of the headlight back-piece, in
order to fit a new unit7.9A Release the clips . . .7.9B . . . and remove the headlight lens
7.8A Unscrew the outer mounting
screws . . .7.8B . . . and inner mounting screws . . .7.8C . . . and withdraw the headlight unit
assembly
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6Similarly remove the fuel gauge and
temperature gauge by unscrewing the single
screws.
7Remove all the pin contacts.
8Using a small punch, push in the multi-plug
securing pins, and remove the multi-plugs.
9Carefully lift the printed circuit from the
location dowels on the housing, taking care
not to damage it.
Refitting
10Refitting is a reversal of the removal
procedure.
Removal
1Remove the windscreen wiper arms as
described in Section 15.
2With the bonnet closed, release the grille
panel upper edge from just in front of the
windscreen, by prising off the caps and
unscrewing the upper retaining screws.
3Open the bonnet, and support with the
stay.
4Pull off the sealing strip from the cross
panel at the rear of the engine compartment.
5Unscrew the lower screws, and remove the
grille panel halves from in front of thewindscreen, withdrawing first one side and
then the other.
6Disconnect the battery negative (earth) lead
(refer to Chapter 5, Section 1).
7Reach in behind the bulkhead. Squeeze the
collar on the upper end of the speedometer
cable, where it is attached to the intermediate
cable from the rear of the speedometer head.
Disconnect the cable, and withdraw it from
the bulkhead inner panel, together with the
rubber grommet (see illustrations).
8Apply the handbrake, jack up the front of
the vehicle and support it on axle stands.
9Unscrew the nut and disconnect the
speedometer cable from the vehicle speed
sensor on the transmission, then withdraw the
cable from within the engine compartment.
Use two spanners to loosen the nut - one to
counterhold the sensor, and the other to
unscrew the cable nut (see illustrations).Refitting
10Refitting is a reversal of the removal
procedure.
Removal
1Disconnect the battery negative (earth) lead
(refer to Chapter 5, Section 1).2Using a small screwdriver, prise the clock
out of the facia (see illustration). To prevent
damage to the facia, place a cloth pad
beneath the screwdriver.
3Disconnect the multi-plug from the rear of
the clock, and withdraw the clock (see
illustration).
Refitting
4Refitting is a reversal of the removal
procedure. Reset the clock on completion.
Removal
1Apply the handbrake, jack up the front of
the vehicle and support it on axle stands.
2Unscrew the bolts, and release the clips
securing the radiator lower cover to the front
of the vehicle.
3Disconnect the wiring from the horn
terminal.
4Unscrew the mounting bolt, and withdraw
the horn with its mounting bracket from under
the vehicle (see illustration).
Refitting
5Refitting is a reversal of the removal
procedure.
14 Horn - removal and refitting
13 Clock- removal and refitting
12 Speedometer drive cable -
removal and refitting
Body electrical system 12•15
12
12.9B . . . and disconnect the
speedometer cable from the vehicle speed
sensor13.2 Prising the clock out of the facia13.3 Disconnecting the multi-plug from
the rear of the clock
12.7A Squeeze the collar . . .12.7B . . . and disconnect the
speedometer main cable from the
intermediate cable12.9A Unscrew the cable nut . . .
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