1984 Citroen CX Temperature

Downloaded from www.Manualslib.com manuals search engine TORQUE CONVERTER ( I ‘/+(I -I
1 51-Rh
CIRCUIT DIAGRAM FOR CX CONVERTER
kd i- I I I c
I I Bc Bc
*
KEY
- Existinq leads G
- Converter
6
8
;a
Parallel connecto- Mr
0 Connector with
No. of ways i
Starter
01 ---
I Bc k l3i F;J
E Mr ,L H wheelarch
A m
I 1
EMr
to TB
Ve
P n
Ve +
1 - Battery
2 - Relay for electro-valves
3 - Ignition and starting contact
4 - Electra-valve controlling fast idle
5 - Electra-valve controlling clutch
6 - Gearbox switch housing
7 - Control relay for electric fan 8 - Thermal switch corrtrolling the electric fans
9 - Electric fan
10 - Relay controlling supplementary electric fan
11 - Supplementary electric fan
12 - Warning lamp for converter oil temperature
13 - Converter oil thermal switch

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 WIRING DIAGRAM FOR ELECTRIC FAN AND AIR-CONDITIONING CONTROL
-- I’)‘(,
L64 4
41 1 1 Front harness
-
T
17
I KEY I
I I
I
Standard wiiinq I
I I
I I
I - Air-cond wiIinq, ‘- - - - - - - _-
1 i 1 1 1
/,/r/////,/,,,,/,//////~////~‘/‘~””’~”””””~””7”“““’
Earth on gearbox
Eart>, on front L H wheelarch 1.
Control relay for supplementary electric cooling fan
2. Control relay for air blower
3. Ambient temperature thermostat ( on evaporator )
4. Air-conditioning switch (on centre console )
5. High pressure switch ( on de-watering tank )
6. Electra-magnetic clutch for compressor
7. Control electro-valve for fast idle and re-cycling ram
( WEBER electro-valve )
8. Control relay for supplementary air-conditioning electric
9. Control relay for electric cooling fan 10.
Ignition coil 11.
Idle cut-off ( on carburettor ) .12.
Electric cooling fan
13. Thermal switch for electric cut-in ( on radiator )
14. Supplementary air-conditioning electric fan
15. Air blower for air- conditioning 16.
Control resistors for air-blower speeds 17.
Air blower switch ( 3-position )

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 Il. CHECKING THE REGULATED TENSION OF THE REGULATORS
CHARACTERISTICS
- Two-stage voltage regulator : Ref : DUCELLIER 8379 A, PARIS-RHONE AYC 2114 and AYC 2117.
SEV-MARCHAL F. 14 V 72717102
These voltage regulators determine the intensity of the current in the alternator inductor in order to maintain a
constant regulated voltage at the battery terminals.
, CHECKING THE REGULATED VOLTAGE
(.‘hcckitlg ti7c rc~~~~~l~tc~cl u~IIcl,~c~ mris t 170 rnrric,rl out u,ith a lrilly darg~~rl hnttcry.
Connect up as per diagram below, using a voltmeter V, an ammeter A and a rheostat, or better still, using a
combined
o voltmeter/ammeter/ rheostat )).
Start engine, and let it idle.
Switch off the ignition, and immediately switch it back on in
order to demagnetize the voltage regulator.
Accelerate the engine so as to reach the adjustment speed for the alternator. Actuate the rheostat, smoothly
without turning it back, in order to increase the current supplied by the alternator, and read the corresponding
voltage.
Take several measurements of regulated tension, and check that the values obtained are between 13 and 14.2 volts,
taking into account the correction value due to the temperature. If the readings are not correct, replace voltage
regulator.
Exe Voltage regulators : DUCELLIER 8379 A
PARIS-RHONE ;;E ;;;; -
SEV-MARCHAL F.14 V72717102
- Adjustment speed : 6000 rpm (alternator)
2750 rpm (engine)
- R egulated voltage adjustment :
between 13 and 14.2 V

Downloaded from www.Manualslib.com manuals search engine II. OPERATING PRINCIPLE
The refrigerating system has four main components
- the compressor ( 4)
- the condenser ( 7)
- the pressure release valve (3 i
*
the evaporator ( 1 )
The refrigerating fluid used is the F. 12
L.64.1 a
Compressor
(4) - Manufacturer ASPERA FRIGO. type HG 700 ( or SANKYO type SD 508 on EMBAUT CLIMAT )
ASPERA twin-cylinder or
SANKYO five-cylinder rotary 1 Fitted onto the gearbox by means of a mounting bracket
The compressor circulates the refrigerating fluid draws in the fluid which is in a low-pressure vapour state
compresses it ( which increases its temperature ) and expels it into the condenser.
The condenser is driven by the engine via the water pump by two trapezoidal belts ( ASPERA ) or one trapezoidal
belt ( SANKYO ).
An electro-magnetic clutch is fitted to the compressor pulley. Its operation controlled by a switch on the centre
console is intermittent due to the presence of an ambient temperature thermostat ( 2 ) which is not adjustable, and
which senses the temperature near the evaporator cooling fins.
In case of excessive pressure in the return circuit, a pressure switch (6) opens the supply circuit to the compressor
clutch.
Condenser (7 ) - Manufacturer CHAUSSON
It allows the fluid to condense and to release its latent heat to the outside air circulating around the fins. It is
secured to the front L.H. side of the engine cooling radiator At the condenser outlet, the fluid is in the high-
pressure liquid state. The fluid flows through the tank ( 5) ( which contains a dehydrating filter ) and flows
towards the pressure release valve.
A 5-blade electric fan accelerates the circulation of air around the condenser fins.
De-watering tank .( 5) - Manufacturer : SINGER
It contains a dehydrating filter element, and is fitted with a visible level indicator, which allows the amdunt .and
state of the fluid to be checked, and a high-pressure switch (6).
The de-watering tank is fitted on the front panel by means of a mounting bracket at the rear L.H. side of the
engine cooling radiator.
Pressure-release valve (3) : It is incorporated in the heater unit, and regulates the output of fluid towards the
evaporator.
Evaporator ( 1) - Manufacturer SOFICA
The air flowing through the evaporator releases its calories, ‘which will cause the low pressure fluid to be
transformed into vapour.
It is incorporated in the heater unit upstream from the heater radiator.