1977 Citroen CX c matic

Downloaded from www.Manualslib.com manuals search engine ELECTRICAL SYSTEM
M 20/616 ENGINE
PRESENTATION OF THE DIAGRAMS
1. CIRCUIT DIAGRAM
a) Special feature
: The various circuits are presented in a functional way. therefore, where a unit is connected
to several circuits, its various sections are shown in (( exploded ~‘form on different vertical grid lines. b) Method of identification
: Identification marks are divided into three sections :
- figures which identify components ( and not leads )
- letters LG. TB. AR etc... identifying wiring harnesses
_
other letters ( Bc. F, Gr, FN, Bl . . . ) identifying the colour of the extremity of the insulating sleeve.
NOTE For the Iast group of identification marks, four cases may occur
- coloiirc~rl slc,c,f,c~ 01l 0 Ic’cirf tllc, colour of wbic-h is irrc’l~~r.nrlI
marks on diagrams Bc, Bl, Ve. Gr. . . . .
= l/o s/oc,r,c, 01) 0 I~~ocl //Ic, c-olour of whit11 .ser1’c’s ns icfc~rltijicntiot, work
marks on diagram F, Gr, F. Ve, E. Bc . . . .
- colourc~ri .s/t,c~c~c, O,I n Icncl the colour uj rrhich SCJ~,‘C’.T ns ic/cvrtijitntiorL mnrk 0.5 rr~ol/ :
marks on diagram : FN -Bl, F.Ve-Bc . . . . .
-
trr/id~~~~li~~c~d I~>nd : its position cannot give rise to any confusion. .lMPORTANT
Identification marks for components and wiring harnesses are arbitrary they have been
chosen for the sole purpose of facilitating the use of the diagrams.
‘1.17~~ colour 01’ II,c~ sl~~c~~~c~s n~ld the I~~atls ore the rnr~ly id~~~~i,/t’cntiot~ vrork,s nc-/uoll\, uscjd OII tlj~~ I~~ncls
making up /h(, cllectric s~~stern c;/ the l,c~hir-Ie. 2. WIRING DIAGRAM
This is a schematic diagram of the components as they are fitted on the vehicle.
It indicates the layout of the leads, and the approximate location of the components.
The method of identification is the same as for the circuit diagram.

Downloaded from www.Manualslib.com manuals search engine , OPERATION No MA. 510-00 a : Arrallgc~rnc~r~t of lhe c,lc,rlric-al i~fslnllnlio~~ Op. MA. 510-00 a 1
( I 1975-
7 1075 ) ARRANGEMENT OF THE ELECTRICAL INSTALLATION
(
l/1075 - 7; 1975 I
PRESENTATION OF THE DIAGRAMS
CIRCUIT DIAGRAM
a) Special feature : The various circuits are presented in a functional way. therefore, where a unit is connected
to several circuits, its various sections are shown in u exploded )) form on different vertical grid lines.
b) Method of identification
: Identification marks are divided into three sections
- figures which identify components ( and not leads )
-letters LG. TB. AR. etc. . identifying wiring harnesses
-other letters ( Bc. F. Gr. FN. Bl . . . ) identifying the colour of the extremity of the insulating sleeve.
NOTE For the last group of identification marks, four cases may occur
- (,‘0lortrc~d slcc’r,cJ 011 cl Ic,clrl 16~~ CVlVJlr clj ri,hic-I7 is irrc~lc~l~nrll :
Marks on diagrams Bc, Bl, Ve. Gr . . .
- No s1c~~j1.v 011 a Icad the colour oj rr,hich scrr’es as
idrrt tijicnfiotl mark :
Marks on diagrams F.Gr, F. Ve, F. Bc, . . . .
s
(.~~l~~llrC~~/ s[ppr,cj o,, o /cod the rolot~r oj ~r~bich SOF,~C’S ns idcvttijic-ntiotl mark as wc~ll :
Marks on diagrams FN - Bl, F. Ve - Bc,
I
l’rlidcrllijic~rl Icarl : Its position cannot give rise to any confusion. IMPORTANT
: Identification marksfor components and wiring harnesses are arbitrary : they have been chosen
for the sole purpose of facilitating the use of the diagrams. 2. WIRING DIAGRAM
This is a schematic diagram of the components as they are fitted on the vehicle.
It indicates the layout of the leads, and the approximate location of the components.
The method of identification is the same as for the circuit diagram.

Downloaded from www.Manualslib.com manuals search engine OPERATION N” MA. 510-00 a : Arrnr~g(,v~ ('I, I 0 / Ih CJ c~lvclric-cil irtslnllc7liori Op. MA. 510-00 a 3
(I.‘1975 -7 1975 J
-
den{
lark
i
6
8
9
0
1
2
3
4
5
6
7
8
9
!l
!2
!3
!4
!5
!6
!7
!8
$0
)l
12
33
34
35
36
37
38
39
41
42
43
44
45
46
47
- DESCRIPTION OF COMPONENTS
Description and Location
‘ront R.H. sidelamp ................................... 74
‘rant R.H. direction indicator .................. 21
1.H. headlamp main beam ................. ..... 78
dipped beam ... .................. 76
3.H. horn 42 .............................................
,.H. horn ....................... ............. ............. 41
,.H. headlamp main beam .......................
77
dipped beam .................... 75
‘rant L.H. sidelamp .........
........................
69
:ront L.H. direction indicator .................. 16
I.T. sensor ............................................ 64
qnition coil ..............................................
61
3lower
motor .........................................
58
;tarter ...................................................... 3
Alternator ..................................................... 5
Xstributor 61 ...................................................
7lectric fan thermal switch .........................
59
Zompressor for horns ................................. 43
Compressor relay ..... .................
.............. 42
3attery ........... ...............................................
1
Joltaqe regulator ....................... ............. 6
Nindscreen washer pump ............. ............... 40
jacket for fault-finding ( diagnosfic) ....... 65
3il pressure switch .... ....................... ... 34
:dle cut-off ........................................... 60
3il temperature switch
35 .............................
Coolant temperature switch ....................... 30
T.D.C. sensor ......................................... 63
Switch for reversing lamps .......................... 8
Relay for window winder ............................. 49
Relay for heater unit 45
................... ..............
Relay for electric fan 58 ..................................
Front R.H. brake unit 28 ...............................
Windscreen wiper motor .............................. 38
Blower motor ................................................ 45
Hydraulic fluid pressure switch ................... 32
Stoplamp switch ........................................... 53
Fuse box ..... .................... 8-44-45-49-69-72
Front L.H. brake unit ........................... ... 26
Front R.H. door lighting switch ... ............
11
R.H. window-winder motor .......................... 51
Glove-box lighting ....................................... 51
Accessory terminal ......................................
5c
Lighting for pneumatic oil gauge .............. 3:
Front L.H. door lighting switch
.................. I[ L.H .
window-winder motor ........................... .47 DESCRIPTION C
No identification
AR
M
LG
TB
co
Front harness
Rear harness
Ynqine harness
dindow-winder harness
Instrument panel harness
Compressor harness jent.
/ark
4”9 50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
iz
67
68
69
70 Description and Location Central interior lamp ............ 10
Cigar-liqhter and lighting
.............. 13-66
Ashtray liqhtinq ...................................
67
Handbrake warning lamp flasher unit
........ 15
Switch for R.H. window-winder
.............. 51
Switch for L.H. window-winder ................ 47
Flasher unit .............................................. 21
Anti-theft switch ......................... 4-8-44-61
Rheostat for fuel qauqe ............................ 25
Switch for interior lamp ... ....................
9
Switch for heated rear window ...................
14
Liqhting for heater controls ..................... 68
Contact for handbrake
............................... 115
R.H. control unit ( liqhtinq )
................... 72
Lighting rheostat for tacho. and speedo.
28
Lighting for intrument panel ................ 68-69
Tachometer
............................................ 64
Battery meter (thermal voltmeter )
.......... 26
Fuel gauge unit
..... ....... ....... ................ 25
Lighting for odometers
....... ......... .......... 28
Clock and lighting ................................ 24-67
Warning lamp for heated rear window
15 .......
Warning lamp for dipped beam 75
_, .................
Warninq lamp for brake pads ................... 27
Warninq lamp for oil temperature
............ 35
Warning lamp for water temperature
.......... 29
Red u STOP 1) warninq lamp
............... 31-33
Warninq lamp for hydraulic fluid presssure 31
Warninq lamp for hazard warning
17
...............
Warninq lamp for sidelamps .................... 70
Warning lamp for direction indicators ...... 23
Warninq lamp for main beam ................. 77
Warning lamp for handbrake
..................... 16
L.H. control unit
Direction indicators and hazard warning lamps .........................................................
19
Horns .......................................................... 41
Windscreen wiper motor ....... .................. 38
Windscreen washer pump .......................... 40
Rear R.H. lamp cluster
Sidelamp ...................................................
73
Stoplamp ....................... .............................. 53
Direction indicator ......................................
19
Reversing lamp ....................... .............
9
Boot lamp ................................................... I2
Heated rear window 14 .....................................
R.H. numberplate lamp ...............................
70
L.H. numberplate lamp ...........
.................... 72
Contact for boot lamp .............................
12
Rear L.H. lamp cluster - Sidelamp
........ 71
,- Stoplamp
.......... 52
- Dir. indicator .. 18
- Rev. lamp ......... 8
IG HARNESSES
Boot harness
Boot-lid harness
Diagnostic harness
Handbrake harness
Flying lead

Downloaded from www.Manualslib.com manuals search engine TABLE OF BULBS
Use Juantity ‘B&e
Type Voltage Power French standard
Ref. No.
Yellow
Dipped beam headlamps 2 P. 45t. 41 R.
( for France) 12 v 40/45 w 136-15
Mains beam headlamps 2 x 511 H2 12 v 55 w R. 136-17
Direction indicators 4
Pear-shaped
Stoplamps 2 BA.l5s/ 19 P 25/l 12 v 21 w R. 136-12
Reversing lamps 2
Front and rear sidelamps 4
BA.l5s/ 19 12 v 5w R. 136-13
Number plate lamp 2
Interior lamp 3 Festoon 12 v 7w R. 136-05
Boot lamp 1 Festoon 12 v 5w R. 136-14
Lighting for tachometer 2 BA 9 s T
8/4 14 v 4w
and speedometer
Lighting for glove box 1 BA 9 s T 8/2 12 v 2w R. 136-34
Warning lamps 14
Lighting for cigar
lighter 1
Wedge base dia == 5 12 v 1..2 w
Lighting for ashtray 1
Lighting for pneumatic
oil gauge I
Lighting for instrument
3
panel Wedge base dia = 10 12 v 2w
KEY TO CIRCUIT DIAGRAM SYMBOLS
I Wiring connector
Q + Capacitor
0 Connection black Motor, electric
Fuse
b b Lighting
d ? 16 Switch, manual Warning lamp
IO Switch, mechanical Instrument dial
? d
Switch, pressure Resistor
b ?
I@ )#
Switch, thermal Rheostat
P
Coil winding

Downloaded from www.Manualslib.com manuals search engine OPERATION No MA. 510-00 b : A. ~rai~gc~mc~r~l oi t/7(’ c~lc~ctrical itfstallation
i I,07jf 9, 1975 J Op. MA. 510-00 b 1
ARRANGEMENT OF THE ELECTRICAL INSTALLATION
f from 9i 197 5 ) PRESENTATION OF THE DIAGRAMS
1, CIRCUIT DIAGRAM
a) Special feature : The various circuits are presented in a functional way, therefore, where a unit is connected
to several circuits, its various sections are shown in CC exploded )) form on different vertical grid lines. i
b) Method of identification : Identification marks are divided into three sections
‘; - figures which identify components ( and not leads )
co
co - letters LG. TB. AR. etc .“. identifying wiring harnesses
0
.3 - other letters ( Bc: F Gr, FN.Bl .-.. ) identifying the colour of the extremity of the insulating sleeve.
c
r”
e NOTE For the last group of identification marks, four cases may occur
2
l C0lo~red slcrrv on a lead the colour oj r&i& is irrvler~a~~t :
Marks on diagrams Bc, Bl. Ve. Gr . . . .
c
i - NO slc~er,c 011 a ledd the colour of rr~hich .ser~‘es as ideutijicatiotl mark. :
2 Marks on diagram : F.Gr, F.Ve, F.BG . . .
l2 c
Coloured sleeve pn a lead the colour o/ which serr1c.s as identification mark as well :
Marks on diagram : FN-Bl. F.Ve-Bc. . . .
- Urlidcntijied lead : Its position cannot give rise to any confusion. IMPORTANT
: Identification marks for components and wiring harnesses are arbitrary they have been chosen
for the sole purpose of facilitating the use of the diagrams.
The colour of the sl~~e~-cs arld the leads are the only.identijication marks actually used ow the leads making
up the electric system oj the r;ehic!e. 2. WIRING DIAGRAM
This is a schematic diagram of the components as they are fitted on the vehicle.
It indicates the layout of the leads, and the approximate location of the components.
The method of identification is the same as for the circuit diagram.

Downloaded from www.Manualslib.com manuals search engine DESCRIPTION OF COMPONENTS
dent.
Ident.
Description ond Location
n ark Description and Location
mark
1
Front R.H sidelamp
74 53
Switch for L.H. window-winder .,, 47
Front R H direction indicator
21 54 Flasher unit
.... 21
2 R.H. headlamp
main beam
78 55 Anti-theft switch
4-a-44-61
dipped beam
76 56 Rheostat for fuel gauqe
,.. 25
4 Horn
41 57
. Switch for interior lamp .,. 10
5 L.H headlamp main beam
.., .., ,.. 77 58
Switch for heated rear window
14
dipped beam”: 75 59 Lighting for heater controls _.. 68
6 Front L H sidelamp
.,. 69 60
Contact for handbrake .._....
16
Front L.H. direction indicator ,.... ._. _._.. 16 61
8 R.H control unit (lighting )
72
H T
sensor connector ,. 64
Lighting rheostat for tacho and speed0
28
9
Ignition coil ,.,
61 62 Lighting for instrument panel 68-69
10
Blower motor 58
Tachometer
.,.
64 11
Starter 3 Battery meter ( thermal voltmeter ) 26 12 Alternator ..I
5
Fuel gauqe unit 25 13
Distributor
61 14 Lighting for odometers _. 28 Electric fan thermal switch 59
Clock and lighting .._.. .,. 24-67
15
Compressor for horns 43 Warning lamp for heated rear window
15 16 Compressor relay 42 Warning lamp for dipped beam
_.. 75 17
Battery 1 Warninq lamp for brake pads 27 18 Voltage regulator . . . . . . . . . . 6 Warning lamp for oil temp. ,,_.. 35
19
Sensor for No 4 cylinder
64 Warning lamp for water temp. ..._.,,, ,,,,. 29 21
Windscreen washer pump ... .. ......
40 Red (( STOP )) warning lamps
31-33 22
Socket for fault-finding (diagnostic) .‘.‘.... 65 Warninq lamp for hydraulic fluid pressure
31 23
Oil pressure switch 34 Warning lamp for hazard warning
17 24 Idle cut-off .._........ 60
Warning lamp for sidelamps
70 25
Oil temperature switch 35 Warning lamp for direction indicators 23 26
Coolant temperature switch 30 Warninq lamp for main beam .‘..... 77 27 ‘I’D f-, SenSOr 63
Warning lamp for handbrake ... .‘........-.. 16 28
Switch for reversinq lamps ... ... ....... 8 63 L H control unit 30
Relay for window -winder ... ... .‘........ 49 Direction indicators and hazard warning 31
Relay for heater unit 45 lamps .,. .,...._ .,. .._ 19
.,. .._.......... 32
Relay for electric fan 58 Horns 41 33
Front R H. brake unit
.._.. 28 Windscreen wiper motor
..,.... 38 34
Windscreen wiper motor
_.............. 38 Windscreen washer pump
.._...... 40 35
Blower motor, ,._..._._....._._..._........ 45 64 Rear R.H. lamp cluster 36
Hydraulic fluid pressure switch _..._......... 32 Sidelamp .._...... 73
37
Stoplamp switch 53 S toplamp
_. _. _. _. _. _. _. 53
.._..............
38
Fuse box 8-44-45-49-69-72 Direction indicator
19
_.. _._.. 39
Front L.H. brake unit
. .._.._............... 26 Reversing lamp 9 41
Front R.H. door interior lamp switch 10
6665 Boot lamp .._. ._. 13
42
R.H. window-winder motor ..- 51 Heated rear window
14 43
Glove&or lightinq .._............ 51 67 R.H. number plate lamp 70
44
Accessory terminal 50 68 _..,......... L.H. number plate lamp
72 45
Lighting for pneumatic oil qauge 33 h9 Contact for boot lamp .._.. .._. .._........ 12 46
Front L.H. door interior lamp switch 9 70 Rear L.H. lamp cluster
- Sidelamp
71 47
L.H. window-winder motor ..: 47 - Stoplamp .._._... 52
48
Central interior lamp
10 - Direct. indic. 18 49
Cigar-lighter and lighting 9-66 - Reversing lamp 8
.._....
50 Ashtray lighting 67 71 Map-reading lamp f Pnl/ns ) .._..._....._.
66
_._......._...................... 51
Handbrake warning lamp flasher unit .._._.._ 15 72-73 Rear R.H. and L.H. door int. lamp switches 52
Switch for R.H. window-winder _..._.. 51 (P(/llgs ) 1 l-12 74-75 Rear R.H. and L.H. int. lamps ( f’nlins ) 1 l-12 DESCRIPTION OF WIRING HARNESSES
No identification PC
Boot lid harness mark
Front harness D <( Diagnostic )) harness AR
Rear harness P.AR Rear interior lamps.harness f I’n//nc )
M Engine harness F
Rear door interior lamp switch harness (Pflj/~.s LG
Window-winder harness MC1 Centre console earth lead( Pall~.~,’ S~/jczr ) TB
Instrument panel harness MC2 Centre console earth lead
co Compressor harness Flying lead UF
Front brake pad wear harness C: Contact harness for reversing lamps
C Boot harness

Downloaded from www.Manualslib.com manuals search engine 4 OPERATION No MA. 510-00 b : it ..n < ,I ,/“c’mc’,, I oi Ill<’ ~‘IVfl,.iC NI iilClNllNtiorl
( ~KJI~I l), 107 5 j
TABLE OF BULBS
French standard
Ref No.
R 136-15 Type Voltage Power luantity Use
Dipped beam headlamps
2
Base
P.45 t 41 Yellow
for France) 12 v
40/ 45 w
x 511 H2 12 v 55 w R. 136-17 2
--
4
2
2 Main beam headlamps
Direction indicators
Stoplamps
Reversinq lamps
Front and rear side-
lamps
Number plate lamp ‘ear-shape<
P 25/ 1 3A 1
S/ 9
12 v 21 w R 136-12
3A 15s/ 9
12 v
5w R. 136-13
R. 136-05
I Interior lamp Festoon 12 v 7w
Festoon
12 v 5W R 136-14 Boot lamp
4v 4w BA.9 s
BA 9 s T 8/4
T 8/2 1 12 v 2w R. 136-34
Warning lamps
Lighting for cigar-light
Lighting for ashtray
Lighting for pneumatic
oil-gauge
Instrument panel lighti
Liqhting for odometers
I I dia. -5 12 v 1.2 w
Wedge base
Wedge base dia 10
2 12 v 2w
1 24 V 3w
KEY TO CIRCUIT DIAGRAM SYMBOLS +
Wiring connector
Capacitor
4 0 6V Connection block
Motor, electric
Fuse
6 b Lighting
u Switch, manual
A Y Warning lamp
b Switch, mechanical Instrument dial
? d
)# Switch, pressure Resistor
b Y
IQ Switch, thermal Rheostat
0 Coil winding

Downloaded from www.Manualslib.com manuals search engine Op. MA. 510-00 b 5
ARRANGEMENT OF THE ELECTRICAL INSTALLATION
PRESENTATION OF THE DIAGRAMS
1. CIRCUIT DIAGRAM
a) Special feature : The various circuits are presented in a functional way. therefore, where a unit is connected
to several circuits, its various sections are shown in (( exploded 1) form on different verticql grid lines.
b) Method of identification
: Identification marks are divided into three sections
CA
- figures which identify components ( and not leads )
00
t - letters LG. TB. AR. etc . . identifying wiring harnesses
2
2 - other letters ( Bc. F. gr: FN. Bl . . ) identifying the colour of the extremity of the insulating sleeve.
2
NOTE For the last group of identification marks, four cases may occur
>
- (~~olourc~d slec~r~c~ on a lcad the colour 0i whirb is irrvlri~aul
+
i
t
’ E marks on diagrams Bc: Bl, Ve, Gr . L
r: - No sle~r,c> OII n ICOO ~hc colour (Ii rr~hic-h sorws ns idc~~lti/icntio~/ mmk :
;: marks on diagrams F. Gr, F Ve. F. Bc . . .
- Colourc~d slwv~~ ou a lc,ad thv colour oj which svrc’es ds idwtijicatiou mark as well :
marks on diagram FN.-Bl. F.Ve. Bc ,.
- Uuidctltijied Icncl: Its position cannot give rise to any confusion IMPORTANT
: Identification marks for components and wiring harnesses are arbitrary they have been chosen
for the sole purpose of facilitating the use of the diagrams.
The rofour oi the sl~~c~ws nud the lends arc’ the on/?, ideuti/icntio// works actunlly used WI thv leads mtikiug up
the vlectrir syslvn, o/ the r,c,hicl(~. 2. WIRING DIAGRAM
This is a schematic diagram of the components, as they are fitted on the vehicle.
It indicates the layout of the leads, and the approximate location of the components.
The method of identification is the same as for the circuit diagram.