coolant temperature Citroen CX 1983 1.G User Guide

Downloaded from www.Manualslib.com manuals search engine Op. MA. 510-00 b 11 DESCRIPTION OF COMPONENTS
lent.
lark Description and Location Ident.
mark Description and Location
1
Front R.H. sidelamp
........................ 79
54 Switch for L.H. window-winder
..... ....... 52
Front R.H. direction indicator
.............. 26 55 Flasher unit
26 ....................................
2 R.H. headlamp - main beam ............... 83 Lighting for heater controls
................... 73
L dipped beam
........... 81 “5;
Switch for interior lamp
10 ..........................
4 Horn
.... 46 58 Switch for heated rear window
................ 19 ..................................
5 L.H. headlamp main beam
82 59 Rear screen wiper switch
.................... 15
Front L.H. sideli?pped..beam ... 80 60 Contact for handbrake
..................... 21
6 ............... ..
74 61 R.H. control unit ( lighting )
............... 77
Front L.H. direction indicator
............ 21 Lighting rheostat for tacho and speed0
.... ..3 3
8 H.T. Sensor .................................
69 62 Lighting for instrument panel
........ 73-74
9 Ignition coil
........................... 66
Tachometer .............................
69 10
Blower motor ...............
.................
63 Battery meter (thermal voltmeter )
........ 31 11 starter
...............................................
3 Fuel gauge unit ................ ..... ...... 30
12 Alternator ............................................
5 Lighting for odometers
...................... 32-33 13 Distributor
.... ......... .......... ..........................................
66 Clock and lighting
29-72 14
Electric fan thermal switch 64 Warning lamp for heated rear window ......
................. 20
15
Compressor for horns ........................... 48 Warning lamp for dipped beam
................. 80 16
Compressor relay .............................. 47 Warning lamp for brake pads
................... 32 1’;
Battery ...........................................
1 Warning lamp for oil temp. ...................... 40
Voltage regulator .............................. 6 Warning lamp for water temp. ............. 34
19
Sensor for No. 4 cylinder ....................
69 Red (( STOP )) warning lamp ..... ..... 36-38
:: Windscreen washer pump ....... ................. 45
Warning lamp for hydraulic fluid pressure 36
Socket for fault-finding (diagnostic )
.... 70 Warning lamp for hazard warning
....... 22 23
Oil pressure switch ..........................
39 Warning lamp for sidelamps .......
.......... 75 :“5
Idle cut-off ....................................... 65 Warning lamp for direction indicators ...... 28
Oil temperature switch ..................... ... .. 40 Warning lamp for main beam
........... 82
:; Coolant temperature switch
.....................
35 ,Warning lamp for handbrake
............... 21
T.D.C. sensor .......................................... 68 63
L.H. control unit
28 Switch for reversing lamps ....................... 8
Direction indicators and hazard warning
24
29 Relay for window-winder ........................
54 1
Horns 46 .............. ............... ..........
30 Relay for heater unit
........................
50 Windscreen wiper motor
.. .............. 43
31
Relay for electric fan ................
63 Windscreen washer pump .................... 45
32
Front R.H. brake unit
.................... 34 64 Fuel gauge rheostat ..............................
30
33 Windscreen wiper motor ........................... 12
................ 43 65 Rear interior iamp
34 Blower motor 50 66
Rear screen washer pump ...................
17
................... ................. 35
Stoplamp switch
58 67 Rear screen wiper motor
.......................... 13
..........................
36 Hydraulic fluid pressure switch
37 68 Heated rear window ...............................
19
..............
;‘8 Fuse box 8-49-50-54-74-77 ;; Rear screen wiper timer ....................
15
............. .........
Front L.H. brake unit
............................... 31 Rear R.H. lamp cluster
39 Front R.H. door lighting switch’
............ 10 Sidelamp
.......................................... 78
10 R.H. window-winder motor
................... 56 Stoplamp ..............................................
53 11
Glove-box lighting 59 Direction indicator ..................................
24 ...... ...........................
42
Lighting for ashtray 72 Reversing lamp ... ........... ............ .......
9 .....................
43 Accessory terminal (radio ) .................. 56 71
R.H. number plate lamp .......................... 75
44
Lighting for oil gauge ........................ 38 72 L.H. number plate lamp ............... ... ....... 77
45
L.H. front door lighting switch
...........
9 73 Rear L.H. lamp cluster
46 L.H. window-winder motor
76 ..................... 52 Sidelamp
.............................................
47 Central interior lamp 57
..........................
10 Stoplamp
..........................................
48
Cigar-lighter and lighting ...............
9-71 Direction indicator 23 .........................
49 Handbrake warning lamp flasher unit ....... 20 Reversing lamp
8 ................................
50 Anti-theft switch
.......................... 4-8-4966
53 Switch for R.H, window-winder
............ 56 IDENTlFlCATlON OF WIRING HARNESSES
No mark
RD
LMG TB
co UF
Front wiring harness RG Rear L.H. harness
Rear R.H. harness H Rear door harness
Engine harness D
Diagnostic harness ( fault-finding )
Window-winder MC1
Centre console earth lead
Instrument panel MC2 Centre console earth lead
Compressor FV
Flying lead
Front brake pad wear CFR Reversing iamp switch harness

Downloaded from www.Manualslib.com manuals search engine DESCRIPTION OF COMPONENTS
1.
Battery
2. Starter
3. Anti-theft switch ignition and starting
4. Safety relay for starting and controlling the clutch electro-valve f ~/lr,c,r/(,r J
5. Clutch electro-valve ( co,/, V~IO~ J
6. Control relay for idling speeds f W//I r,~/or J
relay energized engine idling speed
- relay not energized 1 fast idling speed
7. Switch housing on gearbox ( WJ,, c,~/(,v J
8. Fast idle control relay / ~i)-c o~r/i/ir~//i,l~ 1
relay energized contact open fast idle
9. (( PIERBURG )) electro-valve for fast idle
- energized engine idle
not energized fast idle
10. I6 Amp. fuse 11.
General control relay 12.
16 Amp fuse 13.
Air blower ( tr’n~r// or c-old ) 14.
3-speed blower control
15. Regulating thermostat ( ~i,.=ror,c/i/irrr,i,l~: i
16. Air-conditioning switch 17.
Pressure switch on de-watering tank f ni,-=( or~rli/irrr/i~~~c ) 18.
Compressor clutch f nifsc o//di/io~i/l~ i 19.
Control relay for L.H supplementary electric fan (21 ) ( ~il..r~l/di/io//il/~ )
20. Control relay for electric fan (21 ) (
coolir~g o/ rficJiNlor (I nlc,r )
21. Supplementary electric fan for condenser ( ~il.~rol/ni/i~~ll/i//~ ) and water radiator ( cooling: J
22. Control relay for R.H electric fan ( 24) ( tooli~!: J
23. Thermal switch on water radiator ( (r)olir~,r~ to~trol )
24. R.H. electric fan for gearbox oil radiator and coolant radiator
25. Converter oil temperature warning lamp ( CM, c~sl~r J
26. Thermal switch for converter oil ( COMWKI~B ) KEY TO WI RING HARNESSES
No Mark
: Standard circuit (no optional equipment ) TB :
Instrument panel
Circuit for optional (( Converter - air-conditioning )) - No mark
; Converter wiring on body-shell
- CM : Converter wiring on engine

Downloaded from www.Manualslib.com manuals search engine Op. MA. 510-00 b 19 ELECTRONIC FUEL INJECTION ( i/ 1077 -)
TABLE OF FUSES ( LHD )
SUPPlY Fuses
Circuits protected
Ratinq Colour
Lightinq for qlove-box, bonnet and boot
Centre and rear interior lamps
Accessory terminal
Front L.H. mirror
16 Amps Green (F-2)
Flasher unit. and handbrake warninq lam1
Anti-theft
E Water temperature gauge
switch Cigar lighter
Reversinq lamps
Heated rear window, and warning lamp
+ )) Battery terminal
Instrument panel fuel gauge and low fuel
warninq lamp
Anti-theft
switch Liqhtinq for speed0 and tacho ( Rheostat )
16 Amps
(RFe3d)
_ Battery meter (thermal voltmeter ).
tachometer, warning lamp for brake pad
wear, coolant and engine oil temp. 1
enqine oil and hydr. fluid pressure.
direction indicators ( flashing )
Direction indicators
Voltage requlator
Windscreen wiper and washers
Horn
Windinq for relays for heater unit front
window-winders and horn compressor
Hazard warning lamps
Stoplamps
Clock
Winding for r-elays, for front and rear foglamps
Front and rear, L.H. and R.H. sidelamps, + warninq lamp
Number plate lamps
Lighting switch 10 Amps Yellow Liqhtinq for instrument panel (battery meter. clock. odo-
meters )
(Fl) Lighting for iqnition switch, cigar-lighter, ashtray, water
temp. gauge and heater controls.
Map-reading lamp and fuse ( 5 Amps )
10 A.mps Blue
(F4) Rear foglamps and warninq lamp
Relay for window-
winder 16 Amps White
Front L.H. and R.H. window-winder motors (FE)
Relay for air-
conditioning 16 Amps Mauve
(F5) Air blower
Air-conditioning, compressor clutch, windinq for L.H.
electric fan relay, idlinq speed control electro-valve
( according to model )
Alternator 81) Amps
Incorporated fuse ( on printed circuit ) Components not protected
: Starter, and horn compressor
- OII anti-theit .switrh : ignition circuit, E.C.U. and injector relay, petrol pump, electric fan relays and electric
fans
- cm lighting switch : main and dipped beam headlamps and warning lamps, front foglamps, winding for rear foglamp
cut-out relay.

Downloaded from www.Manualslib.com manuals search engine OPERATION No MA. 510-00 b : A,.,.N//~w~/w/ of I/J<, c~l~~clriccrl iti7tollnliou (0 1075 -i Op. MA. 510-00 b 21 DESCRIPTION OF COMPONENTS
dent.
lark Description and Location Ident.
mark Description and Location
1
Front R.H. sidelamp ............................ 112 42
Engine oil temperature switch 71 ...............
Front R.H. direction indicator .... ... .........
66 43 Water temperature sensor .... .............. 92
2 Front R.H. foglamp 107 44 Reversing lamp switch ................... 95
..................... ....... ....
3 R.H. headlamp main beam
;:: :: Horn compressor relay ..................... 53-54
............... ....
dipped beam Window- winder relay .................. 44-45
......................
47
Heating and air-cond. relay ...............
4 R.H. electric fan ............................... 35 42-43
48
.............. 34-35
5 LH electric fan ( air--conditioning ) Relay for R.H. electric fan
........ 37 49
Relay for L.H. electric fan (air-cond. ) ..... 36-37
6 Thermal switch for electric fan .............. 34 50
R.H. brake unit
........... 80-81
......... ............
7 Horn
....................................
.......... ..... 55 51
Widscreen washer pump .............. .... 56
8 L.H. headlamp main beam ........... ..........
gg 52 Electra-valve for fast idle (air-cond. ) ......... 41
dipped beam ......................
100 53
Windscreen wiper motor ............. 57 to 60
9 Front L.H. foglamp ... . ...............................
106 54
Air blower ..............
........... ..... ........... 42 10
Front L.H. sidelamp ......................... ... ... .. 111 55 Regulating thermal switch (Air-cond. ) .... 40
Front L.H. direction indicator
63 56 ................... Hydraulic press. switch .......................
75 11
Air-flow sensor 13 to 18 57
........................... ... Injector resistor housing .................... .20 to 23 12
Coil. and ignition module
28 to 30 58 Fuse box ............................ 42-45-58-90-105-l 11
................. 13
Butterfly spindle switch 10 to 12 S9 Hydraulic fluid level switch ...................... 76
.................... 14
Starter 3 t0 5 6o L.H. brake unit ........................ 78-79
..........................................
88 15
Cold start injector 11 61 Front R.H. door lighting switch ....... ....
.................................. 16
Alternator 5 62 Glove-box lighting ................................ 90
...........
....... ..................... ....... 17
Compressor clutch ( air-conditioning ) 40 63 Map-reading lamp and fuse ............... ..... ... 110
.........
64 18
Pressure switch 40 Cigar-lighter and lighting ...................... 94-l 12
........................................
65 Ashtray lighting 113 ..................................... 19
Double relay for injection control 7 to 27 ............ 66
Radio(equip. locat. t aerial ) .......... 83 to 85
20 L.H. electric fan relay (air-conditioning) 38 = 39 67
Handbrake flasher unit housing .............. 97-98 21
Rear foglamp cut-out relay (main beam) 104 to 105 68
Electronic control unit (injection ) ....... 8 to 25
22 Front foglamp relay ....................... .. 106 - 107 69
Lighting for pneumatic oil- gauge .............. 72
23
Supply relay for rear foglamps ............ 106 to 108 70
Anti-theft switch ............................ 4-28-58-93 24
u Diagnostic )) socket 52 ......... ....... ... ..... ........ 33 71 Stoplamp switch ...................................... 25
Connector for HT sensor 72 ................... 87
....................... 32 Front L.H. door lighting switch 26
Water temp. sensor ( Injection ) Rear view mirror ............................ 92 to 95
... 25 73
27
Ignition sensor on No. 4 cylinder 32 74 Rear view mirror switch ................... 92 to 95
............. 28
Injector for No. 4 cylinder ...................... 23 75 Front L.H. window winder motor .......... 45-46 29
Injector for No. 3 cylinder 22 76 Front R.H. window-winder motor .............. 49-50
...........................
......................... 85 30
Injector for No. 2 cylinder 21 77 Speaker ( in front R.H. door )
......................... 78 Centre interior lamp ............................... 87 to 89 31 Injector for No. 1 cylinder 20 ............................. 79 R H. window-winder switch .................... 49 to 51 32 Thermal switch
........... .......................... 10-11 8 o
Interior lamp switch .................... ................ 88
33 Supplementary air control ............................
8 81
Air-blower switch and lighting .......... 42-112-113 34 T.&c.
SenSOr ........................................... 31 82 Air-conditioning switch ............... ............ 40
35
Magnetically triggered distributor ........ 29 to 32 83
L.H. window-winder switch .....................
45-47 36
Compressor for air horns ............. ..... ......... 53 85 Handbrake contact ......................................... 98 37
Voltage regulator 5-6 86 Water temp. gauge + lighting ..................
92-110
....................................... 38
Battery 1 87 Windscreen wiper timer
.......................... 59 to 61
....................................................... 39
40
41
Under-bonnet lamp ........................................ 81 88 R.H. switch unit for lighting
Engine oil pressure switch 73 - Speedo. t tacho. lighting rheostat ............ 79
............................
99-103
Coolant temperature switch 77
- General lighting ................................
....... ....................
- Rear foglamps ..................................... 105

Downloaded from www.Manualslib.com manuals search engine dent,
nark
B9
90
DESCRIPTION OF COMPONENTS
Description and Location
instrument panel
Speed0 and tacho lighting
79 ..............
. Tachometer 25-26
........... ............
I Battery meter and lighting ............ 81-107
Fuel gauge ...................... 83
- Lighting for odometers
...................... 108
- Clock and lighting
.................... 70-109
warning lamps for
- Heated rear window ............................... 97
- Dipped beam ... ..... ............................ 101
- Front brake pad wear ...................... 80
- Low fuel ....
............................ 82
-. Engine oil temperature ..... .................
71
- Coolant temperature ...........................
77
- Engine oil pressure ....... .... ............ ...
73
- Emergency STOP (and test button )74-76-78
- Hydraulic fluid’pressure ................... 75
- Hazard warning lamps ....................... 63
- Sidelamps 106
....................... ..... ..............
- Direction indicators ....... ............... 69
- Main beam
99 .....
.............................. ...
- Handbrake
98 ........ ............ ., .............. ...
- Rear foglamps .......... ................. ..lO 4
L.H. switch unit
- Horns 54-55
..... ....................................
- Direction indicators and hazard warning
lamps ...................................... 63 to 67
- Windscreen wiper and washers ...... 56 to 59
- Front foglamps ........ ....... ................. 111
DESCRIPTIOI dent
nark
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106 Description and Location
Ignition switch lighting .................... : 110
Flasher unit ....................... 68-69
Speaker ( in L..H. front door )
......... 84
Rear R.H. door lighting switch
90 ..........
Fuel pump 7
.............................
Rear R H. interior lamp ....................
90
Fuel qauge rheostat
.................... 82-83
Boot lamp
....................................... 86
Heated rear window
......................... 96
Rear L.H. interior lamp
.................. 89
Rear L.H. door lighting switch
............ 89
Rear R.H. lamp cluster
- Foglamp
..................................... 105
- Reversing lamp .............................
95
- Direction indicator ...................
65
- Stoplamp ........... ......................... 51
- Sidelamp ...........................
105
R .H. number plate lamp .......... ... ........
114
L H. number plate lamp ..... ........... ...
113 Boot lamp switch .................................
86
Rear L.H. lamp cluster
- Foglamp
....................................... 104
- Reversing lamp ................................
94
- Direction indicator ............................. 64
- Stoplamp
........................................ 52
- Sidelamp
... ..... ................................. 112
IING HARNESSES
I Id. Mark Description
I Id. Mark Description
AV
Front wiring harness FV Flying lead
No mark on circuit diaqram
IC Injection. on body- shell
R Rear IM Injection, on engine
C Boot
M Engine
CL Air-conditioning (optional ) PC Boot lid
co Compressed air horn
TB Instrument panel
D (( Diagnostic 1) UF Front brake pad wear ( 2 harnesses )

Downloaded from www.Manualslib.com manuals search engine Operating principle :
Both electric fans ( 12) and ( 14) cool the engine coolant in the radiator. Electric fan ( 14) cools the condenser
when the compressor expels the air-conditioning cooling fluid under pressure.
Simultaneous supply to fans (12) and (14) :
This is carried out by means of contacts in relays ( 1 ) and ( 9). The fl ow of current in the energizinq winding of
relays ( 1 ) and ( 9) therefore operates both electric fans simultaneously.
The relay windings are supplied when
- ignition is switched on
*
thermal switch ( 13) controlled by the coolant temperature in the radiator is off. _-
Supply to supplementary electric fan ( 14) alone :
This is carried out by contacts in relay ( 8) when its energizing winding is supplied
The relay winding is supplied when
- ignition is on
- air-conditioning switch ( 4) is off
a
contact on the ambient temperature thermostat ( 3) is closed.
Supply to the electro-magnetic clutch for the compressor :
The clutch supply is a function of the following
- Air-conditioning switch (4)
- Ambient temperature thermostat ( 3 )
-
High pressure switch ( 5).
Supply to the blower ( 15) :
This is carried out by resistors ( 16) of the rheostat. This rheostat controls the speed of the blower ( 3-speed )
and consequently, the volume of displaced air.

Downloaded from www.Manualslib.com manuals search engine Op. MA. 642-00
(< FROID - 20 n HEATING SYSTEM
This heating system consists of the following :
- A device to heat the inlet air
- A’device to increase the heating in the passenger compartment
- A water temperature gauge
- The crankcase has a plug which can be removed to allow a heating element to be inserted in order
to heat the engine coolant