CD player FORD SIERRA 1992 2.G Body Electrical System Workshop Manual

Chapter 13
Body electrical system
Anti-theft alarm - location, removal and refitting . . . . . . . . . . . . . . . .51
Auxiliary warning system components - location, testing, removal and
refitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Brake lamp switch - renewal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Central door locking components - operation, removal and refitting .50
Cigarette lighter - renewal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Clock - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Courtesy lamp and luggage compartment lamp - renewal . . . . . . . .25
Courtesy lamp switch - renewal . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Direction indicator and hazard warning flasher switch assembly -
renewal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Direction indicator/hazard warning flasher relay - renewal . . . . . . . . .6
Electrical door mirror switch - removal and refitting . . . . . . . . . . . . .10
Electrical fault finding - general information . . . . . . . . . . . . . . . . . . . . .2
Electric sunroof components - removal and refitting . . . . . . . . . . . . .17
Electric window components - removal and refitting . . . . . . . . . . . . .49
Exterior lamp bulbs - renewal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
Facia panel switches - removal and refitting . . . . . . . . . . . . . . . . . . . .9
Front direction indicator lamp unit - removal and refitting . . . . . . . . .44
Front direction indicator side repeater lamp - removal and refitting . .45
Front foglamps - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . .46
Fuses and relays - location and renewal . . . . . . . . . . . . . . . . . . . . . . .3
General information and precautions . . . . . . . . . . . . . . . . . . . . . . . . .1
Handbrake “on” warning lamp switch - renewal . . . . . . . . . . . . . . . .14
Headlamps - alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
Headlamp unit - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . .41
Headlamp wiper motor - removal and refitting . . . . . . . . . . . . . . . . . .40
Horn - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Horn switch assembly - removal and refitting . . . . . . . . . . . . . . . . . .11
Ignition switch and lock barrel - removal and refitting . . . . . . . . . . . . .4
Instrument panel - removal and refitting . . . . . . . . . . . . . . . . . . . . . .20Instrument panel components - removal and refitting . . . . . . . . . . . .21
Integral heated rear window/radio aerial amplifier - removal and
refitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
Interior lamp bulbs - renewal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Lighting and wash/wipe switch assembly - renewal. . . . . . . . . . . . . . .7
“Lights-on” warning module - renewal . . . . . . . . . . . . . . . . . . . . . . . .24
Loudspeakers - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . . .55
Luggage compartment lamp switch - removal and refitting . . . . . . .13
Map reading lamp - removal and refitting . . . . . . . . . . . . . . . . . . . . .26
Oil pressure warning lamp switch - renewal . . . . . . . . . . . . . . . . . . . .16
Radio aerial (exterior-mounted) - removal and refitting . . . . . . . . . . .53
Radio/cassette player - removal and refitting . . . . . . . . . . . . . . . . . . .57
Radio/cassette player power amplifier - removal and refitting . . . . . .56
Rear lamp unit - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . .43
Rear number plate lamp - removal and refitting . . . . . . . . . . . . . . . . .47
Rear window washer fluid reservoir - removal and refitting . . . . . . . .39
Rear window washer pump - removal and refitting . . . . . . . . . . . . . .38
Rear window wiper motor - removal and refitting . . . . . . . . . . . . . . .37
Reversing lamp switch - renewal . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Seat heating pad - removal and refitting . . . . . . . . . . . . . . . . . . . . . .52
Speedometer cable - removal and refitting . . . . . . . . . . . . . . . . . . . .30
Trip computer components - removal and refitting . . . . . . . . . . . . . .22
Underbonnet lamp - removal, refitting and bulb renewal . . . . . . . . . .28
Washer nozzles - removal and refitting . . . . . . . . . . . . . . . . . . . . . . .33
Windscreen/headlamp washer fluid reservoir - removal and refitting . .36
Windscreen/headlamp washer pump - removal and refitting . . . . . .35
Windscreen wiper motor and linkage - removal and refitting . . . . . . .34
Wiper arms - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Wiper blades - renewal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Wiring diagrams - general information . . . . . . . . . . . . . . . . . . . . . . . .58
13•1
Contents
13Easy,suitable for
novice with little
experienceFairly easy,suitable
for beginner with
some experienceFairly difficult,
suitable for competent
DIY mechanic
Difficult,suitable for
experienced DIY
mechanicVery difficult,
suitable for expert
DIY or professional
Degrees of difficulty

Lower
5Remove the lower facia panel.
6Remove the four securing screws,
disconnect the wiring, and pull the
loudspeaker from the facia panel.
7Refitting is a reversal of removal.
Rear parcel shelf-mounted
speakers
Saloon models
8Working in the luggage compartment,
remove the single securing screw, then lift the
loudspeaker into the passenger compartment
and disconnect the wiring. Withdraw the
loudspeaker.
9Note that it is important not to disturb the
loudspeaker mounting gasket or retainer.
10Refitting is a reversal of removal, but
ensure that the wiring does not touch the
retainer, shelf, or speaker, to prevent any
audible rattles.
Hatchback models
11Working under the parcel shelf, remove
the four securing screws, disconnect the
wiring, and withdraw the loudspeaker.
12Refitting is a reversal of removal.
Door-mounted speakers
13Remove the door inner trim panel.
14Remove the four securing screws, then
withdraw the loudspeaker from the door and
disconnect the wiring. Remove the
loudspeaker.
15Do not remove the loudspeaker from the
moulding, as the two are a sealed assembly.
16Refitting is a reversal of removal.
Tailgate-mounted speakers -
Estate models
17Remove the tailgate trim panel.
18Remove the four securing screws,
disconnect the wiring and withdraw the
loudspeaker. Note that on models with an
integral heated rear window/radio aerial, the
aerial amplifier unit is combined with one of
the loudspeaker units.19Refitting is a reversal of removal.
High frequency units
20These units are used to reproduce high
frequencies only, and incorporate an
electronic filter network which must not be
disconnected or bypassed. The units are
located in the lower facia panels.
21The removal and refitting procedure is as
described for the lower facia panel-mounted
loudspeakers earlier in this Section, but take
care not to damage the extremely fragile
speaker cones.
Removal
1Some “high specification” models are fitted
with an audio power amplifier, which is
mounted as a separate unit beneath the radio/
cassette unit. To remove the unit proceed as
follows.
2Disconnect the battery negative lead.
3Remove the two screws under the top edge
of the power amplifier unit.
4Slide the unit forwards from the facia panel,
until the wiring plugs can be disconnected.
Disconnect the wiring plugs and remove the
unit.
Refitting
5Refitting is a reversal of removal.
Standard fixing
1Disconnect the battery negative lead.
2Pull off the two control knob assemblies.
3Release the trim panel by unscrewing the
two securing nuts from the control spindles.
Remove the trim panel.4Using a hooked instrument, pull the
mounting plate securing tangs towards the
centre of the radio/cassette player, then slide
the unit forwards from the facia panel (see
illustration).
5Disconnect the wiring plugs and the aerial
lead, then remove the unit.
6Remove the plastic support bracket from
the rear of the unit, and unscrew the nuts and
washers from the control spindles to remove
the mounting plate from the front of the unit.
7Refitting is a reversal of removal.
DIN fixing
8An increasing number of radio/cassette
players have DIN standard fixings. Two
special tools, obtainable from in-car
entertainment specialists, are required for
removal.
9Disconnect the battery negative lead.
10Insert the tools into the holes in the front
of the radio/cassette player and push them
until they snap into place. Pull the tools
outwards to release the unit (see illustration).
11Pull the unit forwards and disconnect the
wiring plugs and the aerial lead. Remove the
unit from the facia panel.
12To refit the radio/cassette player,
reconnect the wiring and the aerial lead, then
simply push the unit into its bracket until the
retaining lugs snap into place.
Each wiring diagram covers a particular
system of the appropriate vehicle; as
indicated in each caption. Carefully read the
Key to each diagram before commencing
work.
58Wiring diagrams - general
information
57Radio/cassette player -
removal and refitting
56Radio/cassette player power
amplifier - removal and
refitting
Body electrical system 13•21
13
57.10 Removing a radio/cassette player
using special tools - DIN fixing57.4 Radio/cassette player securing tangs
(arrowed) viewed from the rear of the unit -
standard fixing54.11 Loudspeaker/integral heated rear
window/radio aerial amplifier bracket
securing screws (arrowed) - Estate models