System Diagram
Lighting For Instruments And Controls Diagrams:
�s�YLighting For Instruments And Controls 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
16 Rheostat
Under the light switch on the facia
18 Combined instrument lighting
On the facia, in front of the steering wheel
22A Fuse board
Behind the access panel in the glove compartment
47/110 Combined instrument/Tachometer on the facia,
In front of the steering wheel
49 Clock
In the centre of the instrument panel
57 Three-pole connector
In each B-pillar
59 Two-pole connector
In the centre console, on the cigarette lighter
60 Single-pole connector
Below the centre console, at the gear-selector lever (automatic transmission)
65 Earthing point
Under the back seat
88 Switch for extra fog lamps
On the facia
91 Selector lever lamp (automatic transmission)
At the selector lever
98 Ten-pole connector (for radio)
In the centre console, in the space provided for the radio
116 Switch for the rear window heating
On the centre console of the facia
122 Eight-pole connector
Two in the facia, behind the EDU trip computer
One under each front seat
143 Recirculation switch
On the facia, between the centre console and the steering wheel
148 Front ashtray illumination, cigarette lighter
On the centre console
154 Lighting for the heater controls
In the heater control panel on the centre console
158 Negative distribution terminal
In the electrical distribution box behind the glove compartment
161 Switch for the rear fog lights
On the facia, to the left of the steering wheel
162 Switch for the left-hand front electric window regulator
On the centre console between the front seats
163 Switch for the right-hand front electric window regulator
On the centre console between the front seats
169 Switch for the air conditioner on the facia,
Between the centre console and the steering wheel
181 Switch for the electrically operated sunroof
On the centre console between the front seats
189 Interlock switch for the rear-door electric window regulators
On the centre console between the front seats
190 Switch for the left-hand rear electric window regulator
On the centre console between the front seats
190A Switch for the left-hand rear electric window regulator
In the left-hand rear door
191 Switch for the right-hand rear electric window regulator
On the centre console between the front seats
191A Switch for the right-hand rear electric window regulator
In the right-hand rear door
210 Voltmeter and fuel consumption instrument (EDU trip computer)
In the combined instrument
216 Automatic climate control unit
On the centre console
231 Distribution terminal +54
In the electrical distribution box behind the glove compartment
240 Electronic unit for instrument lighting rheostat
Below the facia, on the right-hand side, behind the knee shield (on the left-hand side on RH drive cars)
241 DCC trip computer
In the centre of the facia
246 Switch for door fans
On the centre console, between the front seats
249 Seven-pole connector
One inside the cable entry to each B-pillar
252 Rheostat for the heating pad, driver's seat
In the centre of the facia
253 Rheostat for the heating pad, co-driver's seat
In the centre of the facia
267 Radio connection
In the centre console, in the space provided for the radio
341 Earthing point
On the left-hand front seat member
Operation
Instrument lighting rheostat 16 is equipped with external electronic unit 240, which enables it to withstand a higher load.
The lighting for instruments and controls receives its supply from fuse 3, provided that the ignition switch is in the drive position. Rheostat 16 can be used for varying steplessly the intensity of the lighting for the connected components.
The following components receive their supplies from pin 3 of the rheostat
91 Selector lever lamp
162 Switch for left-hand front electric window regulator
163 Switch for right-hand front electric window regulator
181 Switch for the electrically operated sunroof
189 Interlock switch for the rear-door electric window regulators
190 Switch for left-hand rear electric window regulator
190A Switch for left-hand rear electric window regulator
191 Switch for right-hand rear electric window regulator
191A Switch for right-hand rear electric window regulator
246 Switch for rear-door fans (1988)
The following components receive their supplies from pin 5:
18 Lighting for combined instrument 47
49/241 Clock or DCC trip computer
210 EDU1/EDU2 trip computer
The following components receive their supplies from pin 2:
10 Light switch
116 Switch for the electrically heated rear window
143 Recirculation switch
148 Lighting for the front ashtray
154 Lighting for the heater controls
161 Switch for rear fog lights
169 Switch for the AC
216 Climate control unit
252 Rheostat for the heating pad, driver's seat
253 Rheostat for the heating pad, co-driver's seat
267 Dial illumination for the radio
Switch 88 for the extra fog lights receives its supply from pin 9 of the rheostat.
The intensity of the light in the rheostat is also controlled.
Fault-tracing hints
1. Check fuse 3 and check that the supply to it is live.
2. Check that the supply to pin 7 of the rheostat is live.
3. Check that power is supplied from pins 5, 2 and 9 on the rheostat, and that the supply and earth connections at each component are satisfactory.
To check transistor 240
Remove the connector from rheostat 16. While it is disconnected, measure in the connector as follows:
Note:
Carry out this check first, since the rheostat can be damaged if the transistor is faulty.