Antitheft and Alarm Systems

Burglar Alarm Diagrams:

Burglar Alarm Components:

Locations of components

3 Earthing point, facia
At the left-hand front speaker socket

10 Light switch
On the left-hand side of the facia

11 Full beam filament
In the left-hand and right-hand headlamps

12 Dipped beam filament
In the left-hand and right-hand headlamps

13 Parking lights
In the front light clusters

14 Rear lights
In the rear light clusters

15 Number plate illumination
On the luggage compartment lid

16 Instrument lighting rheostat
On the left-hand side of the facia

20 Ignition switch
On the right-hand side of the steering column

22A Fuse board
Behind the access panel in the glove compartment

54 Door switch for the interior lighting
In each door pillar

56 Luggage compartment light switch
In the luggage compartment lid

57 Three-pole connector
Two in the luggage compartment lid

59 Two-pole connector (1988)
In each A-pillar

60 Single-pole connector (1987)
In each A-pillar

82 Seat belt/ignition switch warning relay
In the electrical distribution box behind the glove compartment

122 Eight-pole connector
At the left-hand rear wheel housing

151 Time-delay relay for the interior lighting
In the electrical distribution box behind the glove compartment

158 Negative distribution terminal
In the electrical distribution box behind the glove compartment

159 Distribution terminal +15
In the electrical distribution box behind the glove compartment

230 Distribution terminal +30
In the electrical distribution box behind the glove compartment

234 Side marker lights
In the front light clusters

275 Connection for siren, burglar alarm
At the left-hand front light cluster

276 Connection for bonnet switch, burglar alarm
At the left-hand front light cluster

288 Connection for the ON/OFF switch
In the glove compartment

289 Connection for the burglar alarm control unit (eight-pole connector)
At the electrical distribution box behind the glove compartment

Operation
Cars delivered to certain markets, including the USA, have provision for the installation of a burglar alarm.

A special cable harness and eight-pole connector 289 for connecting the control unit for the burglar alarm are included.

The supply (+30) for the control unit is taken across pin I of connector 289 from fuse 22, regardless of the ignition switch setting.

The control unit receives its +15 supply from fuse 13 across pin 5 when the ignition switch is in the drive or start position.

To prevent the burglar alarm from being set off, the ignition key must be turned within 10 or 20 seconds after a car door has been opened.

The motion detector can be switched on and off by means of ON/OFF switch 288, which is connected to pin 7 of the control unit (earth/no earth).

If the burglar alarm is activated, the alarm will be set off if one of the following contacts should close:

- Door switch 54 connected to pin 8

- Luggage compartment light switch 56 or HOOD switch 276 connected to pin 6.

If the alarm has been set off, a positive voltage will be supplied to pin 4 of horn connector 275 and pin 3 for the parking lights.

The parking lights include:
13 Parking lights (front)
14 Rear lights
15 Number plate illumination
234 Side marker lights (certain markets)

If headlamps 11 or 12 or the fog lights (certain markets) are switched on when the alarm is set off, they will also flash.

Fault-tracing hints
1. Check fuses 13 and 22.
2. Check that the supply to terminals 1 and 5 of connector 289 is live.
3. Check the ON/OFF switch for the motion detector.
4. Check the operation of the door switches, luggage compartment light switch and hood switch, and the corresponding connections to connector 289.
5. Check the connectors, wiring and earth connections.