1984 Citroen CX heater

Downloaded from www.Manualslib.com manuals search engine OPERATION No MA. 510-00 b : i
.,.~//,q~~r~/~/// o/ //IV ~,lc,ctrit 01 iti.sfnl/nlio,l Op. MA. 510-00 b 7
I /IONI 9
1075 )
dent,
lark
1
2
7
8
9
10
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12
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14
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20
21
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41
42
43
44
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46
47
48
49
50
51
52
53
54
55
56
57
58
59
60 DESCRIPTION OF COMPONENTS
Description and Location
‘rant R.H. sidelamp 93 .........................
‘rant R.H. direction indicator .............
33
3 .H. headlamp main beam ............... 102
dipped .beam ............... 101
3.H. blower motor .......... ........ ...... 56
iorn ....... ...... ....
........................... 10
,,H, blower motor ...........................
54
,.H. headlamp main beam .................. 100
dipped beam ........... 99
‘rant L.H. sidelamp ........................
92
Front L.H. direction indicator ................ 30
[gnition coil and anti-interference condenser 58
‘I.T. sensor socket .............................
63
jensor for No. 4 cylinder ................
63
5tarter motor .......................... 3
41ternator and anti-interference condenser 6
Distributor ...... ......................
60
Thermal switch for ventilation ............ 57
Horn compressor ................................ 8
Relay for rear door window winder ....... 71
L H. air conditioning blower relay ............
49
Relay for fast-idle ........................... 52
Air-conditioning pressure switch ............ 51
Battery ...............................
1
Voltage regulator ..................... 6
Diagnostic socket ...................... 64
T.D.C. sensor .......................... 63
Reversing lamp switch ......................
78
Air-conditioning compressor clutch.. ........
51
Relay for compressed air horn ............... 8
Windscreen washer pump ......... ........ 15
Fast idle electro valve ......................
49
Engine oil pressure switch ............... 26
Idle cut-off ...................................
6
Oil temperature switch .: ....................
28
Coolant temperature switch ............
22
Coolant temperature sensor ...............
76
Relay for L.H. blower ....................... 55
Relay for front window-winders ............
44
Relay for heating and air-conditioning
.... ..4 7
Relay for F.H. tlower ........................
57
Front R H. brake unit .........................
21
Front R.H. door lighting switch ............ 81
Windscreen wiper motor ...........................
13
Under-bonnet lighting. ..................... ..... 84
Air blower motor ...................................... 47
Hydraulic fluid pressure switch ............ 24
Stoplamp switch ..................................
37
Fuse box ( 2 fuses ) ......................
69-71
Fuse box (6 fuses ) ..... 12-44-47-75-94-98
Front L.H. brake unit ............................
18
Front L.H. door ‘lighting switch .............
80
Glove-box lighting ................................. 79
Map-reading lamp and fuse .....................
92
Handbrake warning flasher unit ..............
90
Air-conditioning thermal switch .......... 51
Lighting for pneumatic oil gauge ............
27
L.H. outside mirror switch ................
75
&.H. outside mirror ................................. 75
R.H. front door window-winder motor ...... 43
Front R.H.loudspeaker ....................... 88
Interior lamp centre .............................. 81
Cigar,lighter on console and lighting .... 73-94
Lighting for ashtray .............................. 95 dent.
lark
2
63
b:
66
67
68
69
3:
5;
5:
76
77
78
79
80
to9
8:
93
94
95
99s Description and Location
Anti-theft switch
.._.. _..,..... _. 3-12-58-75
L H front door window-winder motor i;
Front L.H. loudspeaker
Front R.H. window-winder switch ....... .... 43
Front heater control lighting ..............
93
Front L.H. window-winder switch
........ 39
Coolant temp. gauge + lighting
........ 76-95
Direction indicator flasher unit ......... 34
Rear R.H. door lighting switch
................ 83
Rear R.H. cigar-lighter ’ ...................
69
Rear R H. window-winder switch
........ 70
Air blower switch ...............................
48
Centre interior lamp switch
.................. 81
Heater rear window switch
...................... 89
Lighting for rear heater controls
....... 94
Air conditioning switch
................
51
Handbrake warning switch
....................
91
Light.ing t rear foglamp switch
.... 94 to 100
Speed0 t tacho lighting rheostat
....... 20
Instrument panel
Lighting .............. 93-94
Tachometer
........................................ 58
Battery meter ( thermal voltmeter )
.....
18
Fuel gauge .., ................... ...................... 16
Lighting for speed0 + tacho
............. 19-20
Clock and lighting ........... ...............
92-29
Warning lamp for heated rear window
...... 90
Warning lamp for dipped beam
............. 99
Warning lamp for bt-ake pad wear
.......... 19
Warning lamp for engine oil temp. .......... 28
Warning lamp for coolant temp
..........
22
Warning lamp for eng. oil pressure ......... 26
Emergency (( STOP )) warning lamps
... ...23-2 5
Test button for (( STOP )) warning lamps
21-23-25
Warning lamp for hydraulic fluid press ..7.4
Warning lamp for hazard warning 30
Warnina lamu for converter oil temo.
Warnin; lamb for sidelamps
..... : ..........
95
Warning lamp for direction indicators
.... 36
Warning lamp for main beam
................. 101
Warning lamp for handbrake
....................
91
Warning lamp for rear fog lamps ........... 97
L.H. control unit
Direction indicators and haz.warning 30 to35
Horns ... ........................................
9 and 10
Windscreen wipers and washers
.... 12 to 15
L.H. rear door lighting switch
................
82
Rear L.H. cigar-lighter
............................ 65
Rear L.H. window-winder switch
............ 65
Rear R.H. window-winder motor
......... 69 Rear Re H loudspeaker
............................ 88
Fuel gauge rheostat ....................... .....
16
Rear R.H. interior lamp
......................
83
Rear R.H lamp cluster
Stoplamp and sidelamp
................ ... 37-97
Direction indicator .............................. 32
Reversing lamp ...................................
78
Foglamp .................................................
98
Heated rear window
.................................. 89
R.H. number plate lamp
97 ..........................
Boot lamp
.......................................
85
L.H. number plate lamp.. ..........................
95
Boot lamp switch
.............................. 85
Rear L.H. lamp cluster Stoplamp and sidelamp
....................... X6-95
Direction indicator ......................... ........
31
Reversing lamp
.......................
................
Fog lamp
.................................................. ii
Rear L.H. interior lamp ............................
Rear L.H. window-winder’motor
............. 68;
Rear L.H. loudspeaker ............................ 87

Downloaded from www.Manualslib.com manuals search engine 10 OPERATION No MA. 510-00 b : A ,tnrt g ’
( O.fjtft 91 107 5 ) TABLE OF FUSES
Supply to
I
Fuse
Circuits protected
Rating Colour
Heater unit relay 16 A Mauve Heater unit
Positive terminal of
battery (( + u 16
A Red Stoplamps
Accessory terminal
Glove-box lighting
E Direction indicators
Windscreen wipers and washers
Horns
Ignition
SW itch
Warning lamp panel ( Battery
meter ( thermal voltmeter ) -Brake pad wear warning
lamp -Fuel gauge- Oil pressure warning lamp - Hydraul.
fluid pressure warn. lamp-Water temp. warning lamp )
Tachometer, (( STOP)) warning lamp
16 A Green Interior lamp
Boot lamp
Cigar lighter
Clock
Hazard warning lamps
Voltage regulator
Reversing lamps
Ignition Heated rear window
switch
E Handbrake warning lamp
Rear screen washers and wiper
Window-winder relay
Lighting switch 16 A
10 A White
Yellow R.H. switch - R.H. window-winder
L.H. switch - R H. window-winder
Ashtray lighting
Cigar-lighter lighting
Heater controls lighting
Instrument panel lighting : Clock
Battery meter
Odometers
Sidelamp warning lamp
L.H. sidelamps, front and rear
10 A Blue R.H. sidelamps. front and rear
Number plate lamp Cl RCU IT DIAGRAM

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 Op. MA. 510-00 b 17 WIRING DIAGRAMS’FOR COOLING FAN AND AIR-CONDITIONING SYSTEM CONTROL
SPECIAL FEATURES
From 1977 models the fast-idle electro-valve ( 9) is manufactured by 1, PIERBURG 1).
When it is not enerqized the electro-valve lets low pressure through towards the carburettor capsule (fast
idle ) contrary to the (1 WEBER )) electromvalve fitted previously.
Fitting the N PIERBURG )) electro-valve necessitates fitting a relay (8) which is enerqized when the air-
conditioning system is operating This relay, with its c( o/)t/i 1) contact cuts off supply to electro-valve (9)
which therefore produces fast idle. DESCRIPTION OF COMPONENTS :
1
- Heater relay ( .s/o~/~/Q~c/ )
2 - Air blower ( .S~n~~dnr(i i
3 - Speed control for blower ( S/nr/clnrt/ J
4 - Regulating thermostat
5 - Air-conditioning switch 6
- Pressure switch ( 01, dc,-rt,cr/t,rit,,q lnr~k ) 7
- Compressor clutch
8 - Control relay for fast idle melectro-valve
9 - Fast idle electro-valve lo-
Relay for L.H. supplementary electric fan f nip-cor/rli/ior/illS ) 1
I- Supplementary L.H. electric fan ( foolir2~~ ) 12-
Relay for L.H. supplementary electric fan ( cooli~/g ) ?3-
Control thermostat ( on radiator ) for electric fans ( Stnr~d& )
14- Relay for R.H. electric fan ( Stmzdnrrl )
15 Electric cooling fan ( Stal?dn~/ )

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 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.

Downloaded from www.Manualslib.com manuals search engine III. AIR CIRCUIT
Heater
radiator
El
E2
Air
blower
I-
FROID - 20
__------- ----- _; Al
E2 : Air intake for recycling in passenger compartment, on RH side of scuttle panel.
Outlets for regulated air in the passenger compartment :
Sl
: Dashboard air vents ( LH and RH )
52 : Air vents on centre console
Air intakes for blower ;
El : Exterior intake on bonnet
53 : Lower front heater unit outlets ( LH and RH )
54 : Rear outlet on centre console
55 : De-misting and de-frosting of windscreen
56 : Centre outlet on dashboard
Distribution of regulated air :
Vl
: Distribution flap between outer and inner air-intakes ( controlled by C 1
V2 : Flap for cutting off outlets S3 -S 4 - S5 - S6 ( controlled by C 2 )
V3 : Distribution flap between outlets S3 - S4 and S5 - S6 ( controlled by C 2
V4 : Distribution flap between outlets S5 and S6 (controlled by a lever on the left of the centre outlet on the
dashboard ).
V5 : Cut-off flap for outlet S6 ( controlled by ‘a lever on the centre outlet on the dashboard )
V6 : On vehicles fitted with the u FROID - 20 )I heater unit
Distribution flaps for outlets Al and A2 at outlets Sl ( controlled by a lever under the side vents ),

Downloaded from www.Manualslib.com manuals search engine OPERATION No MA. 640-00 : (hnrnct~~tis~ics md special jenttrrvs of the nir-
coi~ditiouing systcw. 1 Op. MA. 640-00
7
VII. WIRING DIAGRAMS FOR COOLING FAN AND AIR-CONDITIONING SYSTEM CONTROLS
7.; 1976 - Special features :
From 1977 models, the fast-idle electro-valve ( 9) is manufactured by (( PIERBLJRG )).
When it is not energized. the electro-valve lets low pressure through to.wards the carburettor capsule (fast-
idle ) I contrary to the (( WEBER )) electro-valve fitted previously.
Fitting the (( PIERBURG )) electro-valve necessitates fitting a relay (8) which is energized when the air-
conditioning system is operating. This relay with its N open )) contact cuts off supply to electro-valve ( 9)
which therefore produces fast-idle.
The rest of the operation is identical to the preceding diagram. DESCRIPTION OF COMPONENTS :
1
- Heater relay ( standard )
2 - Air blower ( Stmdnrd )
3 - Speed control for blower f Stnudnrd )
4 - Regulating thermostat
5 - Air-conditioning switch
6 - Pressure switch ( on dc-wnkrivg t~rrk ,)
7 - Compressor cl.utch
8 - Control relay for fast-idle electro-valve
9 - Fast-idle electro-valve
10 - Relay f0r’L.H. supplementary electric fan ( air-rorzditio)litlg J 11
i Supplementary L.H. electric fan ( cooliug )
12 - Relay for L.H. supplementary electric fan ( cooling ) 13
- Control thermostat ( on radiator ) for electric fans ( Standard ) 14
- Relay for R.H. electric fan ( Stmzdurd 1
15 - Electric cooling fan ( Stnrrdurd )
e
P.T.O.