Chapter 12 Body electrical system

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RH main beam
5
10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LH dipped beam
6
10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RH dipped beam
7
10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Not used
8
10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Direction indicators, stop lamps and foglamp relay
9
30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wipers and washers
10
10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear foglamp
11
30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Horn and radiator fan
12
20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Heater blower
13
20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reversing lamps, cigarette lighter, carburettor pre-heating, electric
mirrors and glovebox lamp
14
20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interior lights, hazard warning flasher, clock and radio
15
20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Trailer feed (terminal 30)
16
20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel injection control unit
17
20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front foglamps
18
20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Heated rear window
Note: Not all items fitted to all models
Chapter 12
Body electrical system
Battery - removal and refitting . . . . . . . . . . . . . . . . . . .See Chapter 5A
Battery check and maintenance . . . . . . . . . . . . . . . . . . .See Chapter 1
Bulbs - renewal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Central locking system - general information and component
renewal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Check control system - general information . . . . . . . . . . . . . . . . . . .24
Cigarette lighter - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . .7
Clock - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Electrical fault finding - general information . . . . . . . . . . . . . . . . . . . . .2
Headlamp/direction indicator lens assembly - removal and refitting .12
Fuses and relays - general information . . . . . . . . . . . . . . . . . . . . . . . .3
General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Headlamp beam adjustment - general information . . . . . . . . . . . . . .13
Headlamp dim-dip system (UK models only) - general information . .14
Headlamp washer system - general information . . . . . . . . . . . . . . . .23
Heated seats - general information . . . . . . . . . . . . . . . . . . . . . . . . . .17
Horn(s) - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Instrument panel - removal and refitting . . . . . . . . . . . . . . . . . . . . . . .8
Instrument panel - dismantling and reassembly . . . . . . . . . . . . . . . . .9
Loudspeakers - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . . .26
Radio aerial - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . . . .27
Radio/cassette unit - removal and refitting . . . . . . . . . . . . . . . . . . . .25
Speedometer cable - removal and refitting . . . . . . . . . . . . . . . . . . . .10
Switches - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Tailgate contact pins and plate - removal and refitting . . . . . . . . . . .18
Rear window wiper motor- removal and refitting . . . . . . . . . . . . . . . .21
Trip computer - general information and component renewal . . . . . .15
Windscreen/rear window washer system - general information . . . .22
Windscreen wiper motor and linkage - removal and refitting . . . . . . .20
Wiper blades and arms - removal and refitting . . . . . . . . . . . . . . . . .19
121
Easy, suitable for
novice with little
experience
Fairly easy, suitable
for beginner with
some experience
Fairly difficult,
suitable for competent
DIY mechanic
Difficult, suitable for
experienced DIY
mechanic
Very difficult,
suitable for expert
DIY or professional
Degrees of difficulty
Specifications
Contents
12 The electrical system is of the 12 volt
negative earth type. Power for the lights and
all electrical accessories is supplied by a
lead/acid type battery which is charged by the
alternator.
This Chapter covers repair and service
procedures for the various electrical
components not associated with engine.
Information on the battery, alternator and
starter motor can be found in Chapter 5A.
It should be noted that prior to working on
any component in the electrical system, the
battery negative terminal should first be
disconnected to prevent the possibility of
electrical short circuits and/or fires.
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 anti-lock braking systems),
particularly where an electronic control
module is used.
General
1 A 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.
2 Before 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
2 Electrical fault finding - general
information
1 General information
122 Body electrical system
Fuses - early models
Fuse Rating (amps)
Circuit(s) protected
1
10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LH side and tail lamps, instrument and engine compartment
illumination, lights-on warning buzzer
2
10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RH side and tail lamps, number plate lamps
3
10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LH main beam
4
10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RH main beam
5
10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LH dipped beam
6
10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RH dipped beam
7
10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Not used
8
15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Direction indicators, stop lamps and foglamp relay, ABS relay
9
30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wipers and washers
10
10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear foglamp
11
30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Horn and radiator fan
12
20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Heater blower
13
20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reversing lamps, cigarette lighter, carburettor pre-heating, electric
mirrors and glovebox lamp
14
20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Trailer feed (terminal 30)
15
15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interior lights, hazard warning flasher, clock and radio
16
20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel injection control unit
17
20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front foglamps
18
20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Heated rear window
19
20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Central locking
20
30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electric windows
Note: Not all items fitted to all models. Fuses 19 and 20 are located on the underside of the fusebox. On Convertible models (where applicable),
the fuse for the power hood system is located on the left-hand suspension strut in the engine compartment.
Bulbs
Lamp
Wattage
Headlamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
60/55
Front parking lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4
Front foglamp . . . . . . . . . . . . . . . . . . . . .