1988 CITROEN CX Service Manual

ELECTRICITY
MA 510.00011 1
ELECTRICAL INSTALLATION GENERAL OUTLINES
PRESENTATION:
The electrical system operations are composed of:
- A main wiring diagram.
- A circuit diagram.
- Lists of parts,
harnesses,
earth connections,
connectors between harnesses.
- A fuse table.
A lamp chart.
- Various circuit and wiring diagrams for special functions or optional equipment.
I_
UTILISATION:
The wiring diagram indicates the location of the components, harnesses, earth connections and connectors
on the vehicle.
The circuit diagram presents the electrical circuits in a functional way.
- The components symbols in the circuit diagra*m are those shown on the symbol key (see pages 2 and 31.
- Several symbols can be used for a component and the item can be shownC.exploded on different lines
according to the functions.
- Switches are shown at rest, with vehicle stationary, and the doors closed.
- The switches must be moved from right to left.
- The position of a relay coil, generally to the left of the contact switch, is not compulsorily so.
- In cases where the selector switch is complex, the contact movements are shown in the manner to be
considered the most comprehensible.
- The electronic control units are not shown in detail.
Parts list: the parts are in the alphabetical order, and numbered.
The number of the item remains the same on all the diagrams provided the functron has not changed. The
parts list enables any item to be located on the wiring diagram (by means of letters and figures), and on the
circuit diagram (with a vertical line No). The identification of the connector and the ref. letter of the harness
attached to the part are also included in the parts list.
List of harnesses: it gives the position of electrical harnesses on the wiring diagram and the location of each
lead of this harness on the circuit diagram (capital letter in the middle of the wire).
List of earth connections: it indicates the location of the earth connections and the wires or connectors and
the connecting harnesses (letter CC m )), followed by a number).
List of harness inter connections : it indicates,
- the reference of the harness concerned,
- the type of end fittings: I, metal contact or connecting pin,
U, clip or socket,
- the colour of the wire insulator and the marking or sleeve colour code,
- the junction connector: number of channels, colour and channel involved,
- the location of this connector on the wiring diagram,
- the location of each channel of the connector on the circuit diagram.
The harnesses are described in alphabetic order.
8531 8532

2 51 O%O,l ELECTRICAL INSTALLATION GENERAL OUTLINES
Example:
Connector
cc
t: Locatlori
E
Colour No of channels
Colour a,
(DIagramI
5 Colour :
L
Type Wire 2
Marker No Chan WlrC Marker Type Circuit Wlrlng
M V 3 B 1 N v
91
G I 2 U M d5
3
Between harnesses G (LIH front) & M (engine), there is a white 3 channel connector. On channel 1, the wire
is colour brown with a green marker and a flat pin on the side of LH harness. On the side of engine harness,
it is colour black with a green marker ending in a clip.
This connector is found on “d5” on the wiring diagram (referred as round 0. This circle can include other
connectors).
The No. 1 channel of the white 3 channel connector is to be found on line “91” of the circuit diagram
(reference /3B1/ 1. I
REF. MARKS: several ref. types are utilised.
Large capital figures identify the parts,
Large capital letters identify the harnesses.
Small letters denote the colours according to the code below:
B: White G: Grey Ic: Clear Mv: Gauve (purple) Or: Orange Rr: Pink
BI: Blue J: Yellow M: Brown N: Black R: Red V: Green
1.
- When used on their own, these letters indicate the colour either of a paint mark or of a colour stripe on the wire.
- When a horizontal bar is over them, the letters identify the colour of the wire insulator.
- Used in a box, a letter denotes the colour of the connector.
Small figures: indicate the number of channels or the channel No. of a connector. Marking IS on the insulator
(injection). The channels are numbered 1 to 10 but in fact, 10 is represented as 0.
Roman figures: are used to number the function diagrams and the columns on the junction box and to locate
the various outlet connections of the latter.
$ii-f--B i &Bl/+&-
795
Example:
This connector is the first one of the 2nd column (II) of the junction box, situated to the right hand side.
It is a brown (Ml IO channel 0 connector i-1 The channel is the 8th way (8) marked on the junction box,
starting from the RH side. From the channel is a black wire (N), included in the instrument panel (B) to junction
box harness. The wire has an internal splice: the grey spliced wire (G) incorporates a black (N) marker on the
section entering the channel 1 from 4 way white connector m of lighting rheostat (795).
KEY TO SYMBOLS
1. Socket connection 9. Manual swich 17. Engine
2. Pin connection IO. Permanent position switch 18. Indicator
3. Connector connection 11. Mechanically-operated switch 19. Resistance
4. Screened conductor 12. Pressure switch 20. Rheostat
5. Fuse 13. Temperature switch 21. Winding (ielay, etc.)
6. Diode (rectifier) 14. Lighting lamp 22. Ground connection
7. Accumulator unit 15. Warning lamp 23. Electronic control unit
8. Capacitor 16. Sound equipment 24. Delay unit

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JUNCTION BOX MA 510.00/1 1
The junction box is to be found under the dashboard, to the left (right on RHD) of the steering wheel. It combi-
nes most of the electrical functions.
It is presented on page 3, as seen from above, the front of the vehicle being directed to the left.
COMPONENTS:
- 14 fuses (refer to the table)
- A relay for the electric cooling fan
: RI
- A relay for the rear window winder motor
: R2
- A relay for the front window winder motor : R3
- A relay for the heated rear screen
: R4
- A direction indicator unit : c
- A delay/timer unit for the windscreen wiper : I
- Connectors
Connectors:
- 26, all different, can be connected.
’
- They are different by the number of channels and their colour, each colour being attributed a specific casing slot
- They are grouped by columns I to V (from left to right) and stages 1 to 6 max. (from top to bottom).
All these figures are to be found either side of the conductor on the circuit diagram.
How to read the table (page 2):
Example II 1 0 M 9
B
Connector situated in the 2nd column (II), 1st stage (I).
It is a brown (MI 10 channel (0) connector
The lead (conductor) is located in the channel 9 of the connector concerned on the circuit diagram.
Function : lead supplying the clock electrically: + permanent after fuse F7.
Wires and stripes (V H) Green wire with a black stripe.
Position (66): number of the vertical line on the circuit diagram where the channel and the connector in
question are to be found.
The letter positioned below indicates the harness which connects at that place: B (box)
Special features:
The two black 2 channel connectors used, cannot be mistaken: they differ by a 9 mm clip on the one hand
and a 5 mm flat pin on the other hand.
The yellow 2 channel connector and fuse F14 are used in cold countries only.
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2 MA
510.00/1 ELECTRICAL JUNCTION BOX
Colour Colour
CJ)
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2% z 2:
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“v)Z”” i53 s 22
S2r”~S 0% zi ‘i’ F
G,c
125M 1JM Earth 106-201 211
III 5 3 Bl 1 J Mv + lgnttron 40
On Harness 3 J 2 v L/H Front Srde Lamp 201
2 V Mv
G + lgnrtion Swatch 38
Main Beam 212 3V B Tachometer 66
4G V Dipped Beam
G 213
5 V BI L/H Drrectron lndrcator 107
III 6 6 B 1 J Mv + lgnrtron Swatch - Heater 20
l35B 1G 2J G + lgnrtron Switch - Heater 27
Drpped Beam 214
3
2J G Marn Beam 215
H 4
D 3 v R/H Side Lamp 202
4 J M 5J R
Earth Heater Eart; 24
11 I-203 216
5 V BI 6 J BI Heater Earth 31
R/H Direction lndrcator 112
I408 1 Heated Rear Screen IV 1 0 J 1 BI
162 Main Beam 215
2 2 Heated Rear Screen 2 J V
163 Dipped Beam 213
3 s Boot Lighting 3 G
188 Rear Fog Lamp Swatch
208
4 Side Lamps 4G N
217 + Directron Indicator Swatch 108
5 5
Rear No Plate Lamps 219
B 5 G BI L/H Drrection lndrcator I 109
R 6 2
Stop Lamps 6 G M Earth
147 I105
E 7G R Side Lamps
7 3 L/H DIrectron lndrcator 109 211
8 L? R/H Drrectron Indicator 8G B
110 R/H Directron lndrcator 110
9 t” Reversing Lamps 33 9 J N + Direct Lrghtrng 201
0 Rear Fog Lamps 208 0 BI N + Drrect Lrghting 201
IllOM 1 IV24M 1 + Battery lgnttron Switch 138
2J G Marn Beam 216 2 + Battery lgnrtron Swatch 27
3 3 + Battery lgnttion Switch 5
4 * 4 + Battery - lgnitron Swatch 38
56 R Side Lamps 211 .
B 6 IV31N 1 Heated Rear Screen
7M V Hand Brake 90 I.
8 N + Ignition Switch 79 IV46J 1 J R Windscreen Wiper Fast Speed 133
9V N + Direct 68 2 J Mv Wrndsc Wtper t lgnrt Swatch 138
0 V BI Tachometer 65 3 G Mv Windscreen Washer Pump
B 138
4 J BI Wrndscreen Wiper Slow Speed 134
II288 1 Side Lamp 204 5G v Windscreen Wiper Parkrng 136
2 B G Hazard Warning Switch 111 .6 G J Windscreen Wiper Timer 135
3B N + Drrect 110 .
B 4 B BI L/H Direction Indicator 111
IV 5 7 B 1 G Mv Windscreen Washer Pump 138
5 6 Mv + lgnitron Switch 111
2 G M Earth 6-80 138
6B J + Drrection Indicator Unit 107
3J G Earth
7 0 160
R/H Direction Indicator 112
G 4 M Cooling Fan Relay 6 a M Earth 113
5G B Horn 159
6 BI Cooling Fan 7
ll32B 1 V Cigar Lrghter Lighting 203 7V J
H 2 + lgnitron Cooling Fan Relay 6
II43M 1 J V13J 1
Earth 94
2 J 2 B V Horn
Earth 93
B 159
MB 3 B M
3 J Earth + Horn
92 159
II538 1 V J Rear View Mtrror De-lcrng V 2 4 BI 1 BI
158 Rear Window Motor
116
2v B Heated Rear Screen Switch 2J V
162 Height Corrector Earth 141
H H 3 V Mv + Ignition Switch 3J N + Drrect height Corrector 144
4J B + lgnrtron herght Corrector 139
(Heated Rear Screen) 162
lll12M 1 J Earth 204 189 V32N IN + Battery Junction Box 2
H J N + Crgar Lighter 90 G N + Battery Junctron Box 2
Ill 2 6 M 1 G N + Stop Lamp Switch 147 V45J 1 J R Wrndscreen Wrper Fast Speed 133
2 G M Earth 90 2 J BI Windscreen Wiper Slow Speed 134
3
D 3 G B Windscreen Wrper Parking 136
H 4V R + Glove Box Lrghting 187 4J N + lgnitron Windscreen Wiper 137
5 G Stop Lamp Switch 147 5 J Earth Windscreen Wiper 134
6 V Hand Brake Swatch 90
V54J IJ R Starter Solenord 5
III 3 2 N 1 V R + Direct Radro 191 2 G Bi Reversrng Lamps 33
H 2 ( + lgnrtion Swrtchl G 3 G + lgnrtron Swatch After Fl 34
4G R + lgnrtron Swatch Rev Switch 33
lll44B 1 lgnttron Swatch + C iF3) 138 -
2 lgnrtron Switch + C tF2) 27 V 6 3 R 1 BI N Rear Wrndow Motor 128
3 Starter Swatch 5
H 2G R t Direct After F7 179
4 lgnrtion Switch -t C lgnrtron 38 3J M + Dtrect Rear Crgar Lrgther 139

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~ @ INSTRUMENT PANEL 51EiV2
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INSTRUMENT PANEL CONNECTORS
8531-8532