coolant CITROEN CX 1988 Service Manual

- Remove the ileader tank cap
Refit the cap
Run
the engine at 2000 rprrl approx , until the cooling fan(s) has (have) cut In
NEVER OPEN THE CAP OF THE HEA
OPERATING. THE ELECTRIC COOLING FAN(S) IS (ARE)
Top up
the coolant tevel in the header tank

“LE Jetronic” system
The “LE Jetronic” is a fuel injection system whrch injects intermittently petrol, at low pressure, into the Inlet manrfold
The main characteristic of the device is to meter directly the air drawn In by the engine, which is the only reference
for the fuel quantity to be injected. The fuel metering is carried out by electro-magnetically triggered injectors. These
are under a constant fuel pressure.
The quantity of fuel injected depends on how long the injectors remain open. The duration of opening IS optimally
determined for each engine operating phase by an electronic control unit, from data supplied by various electric
sensors.
The “LE Jetronic” device is composed of:
No. COMPONENTS MADE BY REFERENCE
142 Electronic Control Unit (E.C.U.) BOSCH 0280 000 224
192 Throttle spindle switch 0
0280 120 313
280 Supplementary air control u
0280 140 178
302 Flow meter ,)
0280 202 061
345 Electrovalve ,,
0280 141 011
575 Cold start injector n
0280 170 409
576 Injector >,
0280 150 200
683 Electrical fuel
pump 1,
0580 464 008
731 Relay >,
0280 230 009
841 Coolant temperature sensor 1)
0280 130 026
870 Slow thermal switch ,>
0280 130 214
F Fuel filter ),
0450 905 002
R Pressure regulator ,)
0280 160 216

ARRANGEMENT OF THE ELECTRICAL INSTALLATION
q @ CX22TRS 7/85-t 1 MA 5 510.00110
3EF. DESCRIPTION LOCATION
Circuit Wiring CONNECTOR
Number HARNESS
Channel-colour (or urilt)
1 Front cigar ljghter & lighting 137-151
i5 38-l v H
5 Ignition distributor 30 to 34 3N 2
10 Alternator 51 to 54 b6 IN + Ilc CA & M
25 A & B Horn 107 - 108 c7 1N + 1N A
45 Battery 1
b8 IN + IN CP & CN
46 Instrument panel 36 to 73 159 to 162 g6 * T
50 Ignition coil 30-3 1 IN + Ilc G
75 Ignition module 30 to 32 7N Z
81 Interior heating control unit 21 to 24 h5 8N K
84 Coolant level indicator unit 41 to 43 e4 5B D
89 Door locking indicator lamp unit 131-132
i5 5N H
90 Door locking control unit 124 to 134 15 9v H
91 Remote control door locking unit “PLIP” 120 to 122 n5 8N P
92 Interior lamp timer 117 to 122 15 7M H
93 Bulb failure detection unit
27, 46 to 48, 74-75, 104-I 65 S8 38 + 68 & 6J L & w
95 Junction/Fuse box
127 Side lamp audible warning 1222123 g8
g6 5+N‘” ;
130 TDC sensor 28 3M
170 Boot light switch 136 s6 IM E
174 Boot door locking switch 126 t5 2M C
180 Reversing lamp switch 27 d6 1N + 1V G
185 Stop lamp switch 104 h6 IN + IM H
190 Hand brake switch 55 k5 2M H
!25 Carburettor choke switch 49 IG B
!29 Ignition switch 4-30, 44-95 h7 4M + 48 (95)
!30 L/H Front door switch *
119 f9 IM H
!31 R/H Front door switch 120 fl 1M H
!32 L/H rear door switch 122
k9 IM H
!33 R/H Rear door switch 123 kl IM H
!34 Glove box switch 135 f3 1 Ic+ 1 Ic H
!35 Hydraulic fluid low pressure switch 46 e6 IM G
!36 Hydraulic fluid level switch 45 e8 1 Ic + IM G
!37 Coolant low level switch 41-42 e3 3R D
!38 R/H Front door lock switch 64
jl 28 H
!39 L/H Front door lock switch 63 P
28 H
!41 R/H Rear door lock switch 66 (71 28 PD !42 L/H rear door lock switch 65 qg 28 PG
!43 Boot door lock switch 67 c5 2M C
!44 Bonnet lock switch 62 a5 2M V
!51 Height control switch 96 to 100
j5 2M & 4M H & (608) !54 Lighting/Direction indicator switch 72 to 75. 57 to 163 97 58 4M 3M T
!55 Windscreen wiper/Washer & Horn switch 90 to 95, 107 g6 48 5B 28 T
!68 Air recycling switch 15 to 17
h5 4J Q
!71 Air distribution switch 12 to 14 h5 4M Q !78 Blower motor speed control 18 to 20 h6 38 Q
!79 Heater control & Lighting 23 to 25-68 h4 58 K
100 Starter motor 2 to 4 b5 IN & IR CP 165 Ashtray lighting 152 if5 2B H
I70 Boot lighting 136 s4 1N & llc F
I75 Glove box lighting 135 f4 IN & 1M H I80 Engine compartment lighting 150 c6 IN EC
I85 L/H rear number plate lighting 166 t6 Ilc + IM E 186 R/H rear number plate lighting 167 t4 Ilc + IM E
190 Steering lock lighting 156 97 Ilc + IIC T
L20 Carburettor idle cut-out solenoid 25 IN M L30 L/H front brake caliper 48-49 d9 2N + IN U(g.) I31 R/H front brake caliper 50-51 dl 2N + IN U(d.!
L40 L/H front side lamp 149 a8 2M G
141 R/H front side lamp 151 a2 2M D 142 L/H rear lamp 165 L43 R/H rear lamp 166 I45 L/H rear lamp cluster t8 6G F
146 R/H rear lamp cluster t2 6G F
157 L/H stop lamp 104
* Particular Specification
8531-8532

6 ARRANGEMENT OF THE ELECTRICAL INSTALLATION
CX
22 TRS 7185 --)
REF DESCRIPTION LOCATION
“;;;;;roR HARNES:
Circuit Wiring Channel-colour (or unit)
458 R/H stop lamp 105 460 L/H rear fog lamp 156 461 R/H rear fog lamp 157
462 L/H reversing lamp 27
463 R/H reversing lamp 28
470 Fuse l 480 g8 L/H front direction indicator 73 a7 30r G 481 R/H front direction indicator 76 a3 30r D 482 L/H rear direction indicator 74
483 R/H rear direction indicator 75
486 L/H long range lamp connector 159 a7 28 G 487 R/H long range lamp connector 164 a3 2B D 488 L/H headlamp 160-161 a8 3lc G
489 R/H headlamp
162-l 63 a2 3lc D 500 L/H front loudspeaker connections 139
gg IB + IR H 501 R/H front loudspeaker connections 141
gg IB + IR H 502 L/H rear loudspeaker connections 142 k9 28 PG 503 R/H rear loudspeaker connections 147 kl 28 ‘,PD 506 L/H front tweeter connections 140 h9 2B H 507 R/H front tweeter connections 140 hl 28 H
511 Rear fog lamp switch 156 to 158 g5 881 B 519 L/H window motor switch on driver’s door 85 to 87 h9 5B PC ‘520 R/H window motor switch on driver’s door 80 to 82 h9 5M PC 521 L/H window motor switch on passenger’s door 85 to 87 hl 58 PP 532 Heated rear screen switch 110 to 112 j5 5M P 545 Interior lighting switch
114 to 116 j5 58 P 570 Hazard warning switch 75 to 78
g5 8N B 580 Fuel gauge transmitter 59 to 61
96 IM 1N IJ J 600 Windscreen wiper motor 90 to 94 e4 58 D 608 Height control motor 97 to 103 j4 ‘. 38 H 615 R/H front window motor 80-81
gg 30r LV 616 L/H front window motor 85-86
gl 30R PP 621 Air intake motor 15-16 e3 2B Q 622 Air distribution motor 13-14
94 28 0 625 R/H front door lock motor 125-127
0 ZM-3B H 626 L/H front door lock motor 128 to 131 jl ZM-3B H 627 R/H rear door lock motor 125 to 127 p9 2M-3B PG 628 L/H rear door lock motor 128 to 131 pl 2M-3B PD 629 Boot door lock motor 131
t5 2B C 630 Fuel flap lock motor 127 s2 28 X 635 Engine cooling fan motor 11 a6 IM-IR V 640 Clock 32 to 34 f5 4M BA 650 Engine oil pressure switch 44 d3 IM RC 658 Blower fan speed control module 20 f3 1 V-l BI Q 680 Windscreen washer pump 95 el 2N D 690 Central interior lighting 113 to 115 n5 1N+2xllc+lM P 695 Front interior spot lamp 113 n5 lN-1M P 698 Headphone socket 143 to 146 k5 58 H 710 12 V supply soket 89 k5 IN + IM H 721 Radio connections t 12V and loudspeakers) I” + ” - &, LS) 139 to 147 k5 lR+4x2B H 727 Carburettor mixture heating element 7 IIC RM 735 Main beam relay 163-164 q7 5N T 739 Height control relay 98 to 102 f7 5N H 745 Blower motor fast speed relay 18 to 20
94 5N Q 778 Mixture element temperature relay 5 to 7 5lc RC 779 Mixture element engine running relay 8-9 5lc RC 781 Mixture element engine starting relay 6-7 5N RC 788 Engine cooling fan resistance 11 38 V 795 Lighting rheostat 62 g6 4B B 810 L/H direction indicator repeater connectrons 72 e9 II&l + IICT G 811 R/H direction indicator repeater connections 77 el II&l + IICV D 831 Interior temperature selection motor 21 to 25
cl5 5B K 836 Oil level sensor 57-58 c4 28 M 839 Interior air temperature sensor 24
j5 28 P 850
2 stage engine cooling fan thermal switch 11-12
b6 3lc V 853 Mixture element temperature thermal switch 5 IJS + IJti RM 855 Max. coolant temperature thermal switch 39 c4 IB M 935 Blower motor 19 d5 IN + li;j Q 945 Heated rear screen 111 r3 to 7 IN + IN F + ML 980 Door locked warning lamp 132
99 Ilc + Ilc H

ARRANGEMENT OF THE ELECTRICAL INSTALLATION
a @ CX25GTI 7185-t MA ’ 510.00/11
REP.
DESCRIPTION LOCATION
Crrcurt Wrnng CONNECTOR
Number HARN ES:
Channel-colour (or unit)
1 Front lighter and lrghtrng
crgar 172-186 15 3B-1 V H
10 Alternator
86 to 89
b6 Ilc & IN M & CA
44 Dtgital display
67 to 74 f5 l5V BA
45
Battery
2
b8 IN & IN
CP & CN
46 Instrument panel
63 to 108 g6 *
T
51 Ignition coil cyls 1 & 4
57-58 c6 . 3N Z
52 lgnrtion coil cyls 2 & 3
61-62 c6 3N Z
57 Fuel metering unit (option)
47-48 i5 4B 0
60 Air conditioning control unit (option)
12 to 15
h5 7B Q
81 Interior heating control unit
27 to 30 h5 8N K
84 Coolant level indicator unit
76 to 78 e4 56 D

89
Door locking indicator lamp unit
166-167
j5 5N H
90 Door locking control unit
159 to 169 j5 9v H
91
Remote control door locking unit
155 to 157
n5 8N P
92 Interior lighting timer
152 to 156 j5 7M H
93 Bulb failure detectron unit
33-109-I 10, 81 fo 83, 139. 191-200 s8 38 6B 6J L & 2xw
95 Junction/fuse box *
27 Side lamp audible warning 9 ?. *
*
157-l 58
g6 5N T
31
Flywheel datum sensor
60-61 c6 2M
Z
32 Flywheel teeth sensor
58-59 d6 2BI 2.
36 Ignition vacuum sensor
59 to 61 e3 30r CD
40 Mileage sensor (option)
50 e7 28 0
41 IEI control unit
54 to 65 e8 15B-15N Z
42 Injection electronic control unit
39 to 49 93 25N IC
70 Boot light switch
171 s6 1M + 1 E
74
Boot door locking switch
166 t5 2M
C
BO
Reversing lamp switch 33
d6 IN-1V
G
B5 Stop lamp switch
139 h6 IN-TM H
90 Hand brake switch
90
k5 2M H
92 Throttle spindle switch
45 to 47 b4 3N IC
29 lgnrtion switch
5-27, 38-130 h7 4M-48 95
30
L/H front door switch 154
f9 IM H
31 R/H front door switch
155
fl IM H
32 L/H rear door switch
157
k9 IM H
33 R/H rear door switch
158 kl 1M H
34
Glove box switch
170
f3 2xllc
H
35 Hydraulic fluid low pressure switch
81 e6 IM
G
$6
Hydraulic fluid level swatch
80 e8 1 Ic-1 M
G
$7
Coolant low level switch
76-77 e3 3R
D
* Particular Specification
8531-8532