Convertible

Interior Lighting Components:

Interior Lighting Diagrams:

Locations of components

22A Fuse holder
In the electrical distribution box, in the engine compartment, on the left-hand wheel housing

51 Roof lamp, front
Behind the inner rear-view mirror

52 Ignition switch lighting
Between the front seats, at the ignition switch

53 Interior lighting switch
Between the front seats, at the gear lever

54 Door switches, interior lighting
In each door pillar

58 12-pole connector
On the angle bracket, under the fascia on the left-hand side (behind the knee shield)

59 2-pole connector
Behind the trim, at each reading lamp

60 Single-pole connector
Between the front seats, under the centre console

82 Seat belt/ignition switch warning relay
In the electrical distribution box under the back seat, relay position E

98 10-pole connector
To the left of the steering column, behind the knee shield below the fascia

117 Earthing point
Between the ignition switch and the handbrake lever

151 Time-delay relay for the interior lighting
In the electrical distribution box under the back seat, relay position B

152A 29-pole white connector
1528 29-pole red connector
In the engine compartment, in the electrical distribution box on the left-hand wheel housing. The connectors are accessible from the interior of the car.

175 Electronic unit for the central locking system
Under the fascia on the right-hand side, behind the knee shield

225 Reading lamp
One on each side of the back seat

Operation
The lighting is supplied across fuse 28 and 29-pole white connector 152A, regardless of the position of the ignition switch.

The interior lights can be switched on and off by means of interior lighting switch 53, at the ignition switch.

When the switch is in the front position (2), front lamp 51 at the rear-view mirror, ignition switch lamp 52 and reading lamps 225 are always switched on.

In the rear position (1), the interior lighting will be switched on if one of the door switches 54 is closed, i.e. if a door is opened. In the centre position (0), the interior lights are always off.

On cars for the USA and Canadian markets, and the 1989 model for Japan, door switch 54 for the left-hand front door is supplied via seat belt/ignition switch warning relay 82.

Time delay
Time-delay relay 151 for the delayed interior lighting is supplied across fuse 12 when the ignition switch is in the drive position, and with a constant supply from distribution terminal + 30, regard less of the position of the ignition switch.

When the interior lighting is switched on by a door being opened, terminal T will be earthed and relay 151 will be energized.

When the circuit is subsequently broken by the door being closed, the interior lighting will remain switched on, since the timing circuit of the relay will keep the earth circuit closed across terminals T and 31.

The time delay is around 15 seconds, but will be interrupted if the ignition switch is turned to the drive position. A positive voltage (from +54) will then be supplied to terminal 15 of the relay. Both terminals- 15 and 30 - will then receive a positive supply. The relay will thus be de-energized and the earth circuit across terminals T and 31 will be broken.

Fault-tracing hints

1. Check fuse 28 and check that the supply to it is live.
2. Check the bulbs for the interior lighting and check that the supply to them is live.
3. Check the interior lighting switch and the door switches.
4. Check the connectors, cable harnesses and earth connections.

Time delay

1. Turn the ignition switch to the drive position. Check fuse 12 and check that the supply to it is live.
2. Check that terminals 15 and 30 of relay 151 are live.