1988 CITROEN CX alternator

PROTECTION OF THE ELECTRICAL COMPONENTS
PRECAUTIONS TO BE TAKEN WHEN CARRYING OUT AN OPERATION ON THE VEHICLE
It is essential to avoid actrons which may damage the electrical or the electronic equipment or create a short circuit
(wrth subsequent risk of fire or accident).
Battery:
a) First disconnect cable clamp from the battery negative terminal, earthed, then from the positive post.
b 1 Before tightening the negative clamp to the battery (the negative lead should be connected last), ensure that there
is no short circuit (bright sparks or arcs).
Small sparks may occur due to the interior lamp (door open), door locking device, clock or components having
remained in operation.
c 1 Make sure that the terminals are properly connected. Clamps and terminals should be clean and correctly tightened.
d ) When recharging the battery, disconnect the two clamps first.
e) Do not reverse the negative and positive clamps on the battery. (This could destroy the alternator diodes).
Fuses:
a 1 Fit the correct type of fuses: use the fuses specified for the protected devices
b 1 Take the added accessories and the functions into consideration.
Charging circuit:
,a 1 Do not run the alternator unless it is connected to the battery. Do not disconnect the battery when the alternator
is rotating.
b 1 Ensure that the regulator is correctly earthed.
c ) Do not interchange the leads connected to the regulator, (charge detection warning lamp and excitation are specific).
d ) Do not connect a suppressor capacitor to the regulator without taking precautions or following proper
instructions.
e 1 Do not use an electric welding equipment on the vehicle without having first disconnected the alternator, the regula-
tor and the battery (insulate the two terminals).
f 1 Do not R check )) the operation of an alternator by short circuiting the positive and ground terminals, which may
destroy the diodes.
Starting the engine:
Do not use a booster or a 24-volt battery. Only use a correctly charged 12-volt battery (a higher capacity battery may
be utilised). Otherwise, risk of deterioration of the ignition module or any other electronic control units. If the starter
is needed for starting the engine, without running it, it is necessary to disconnect datum and flywheel sensors on the
All Electronic Ignition, or the primary lead of the coil on any other type of ignition.
Ignition:
a 1 Do not connect a suppressor capacitor to the negative terminal of the coil.
b 1 Do not operate the module if its radiator is not connected to the earth.
c 1 Fit the radio suppressor capacitors recommended by the factory.
d 1 Never operate the ignition system while the HT circuit is open. Connect the HT leads to earth
e) Only use rev. counter having a HT sensor, (never puncture HT leads).
0.1. bulb:
a) Never replace a 01. bulb with the headlamp switched on. If the headlamps have been in use, allow them to cool down.
b) Do not touch a 0.1. bulb with bare fingers. Any fingerprints must be cleaned with soapy water and the bulb dried
with a dry lint-free cloth.
Checks :
a) Preferably use a high resistance (> 10 k Q VI voltmeter or a battery-operated ohm-meter
b) Take care not to use instruments taking their power from the mains.
Electronic components:
a) Avoid overvoltages due to a badly insulated charger, electric arcing or connections to the coil.
The units such as regulator, ignition module, tachometer, windscreen wiper timer, flasher unit, clock, radio, oil gauge
unit, door lock control unit, etc. comprising electronic components may be deteriorated.
b) The electronic components should not be placed or operated under a temperature exceeding 80°C.
c) Always switch off instruments or electronic control units before connecting or disconnecting them.
‘

REMOVING AND REFITTING
THE ENGINE/GEARBOX ASSEMBLY
- 2.5 LITRE CX WITH PETROL INJECTION -
REMOVAL
Support the car on stands horizontally, Fig. I using
the three stands 6602-T, in order to facilitate the
removal of the power unit assembly and to reposition
it more easily on the stands.
Depressurize the hydraulic system.
Drain the brake accumulator.
Set the height control to the “low” position
Remove:
- the battery,
- the bonnet,
- the front wheel,
- the spare wheel
- the protection plate located under the spare wheel,
Drain the cooling circuit via the drain hose of the
radiator.
Take off the crankcase drain plug (I 1, Fig. II.
Remove the drive-shafts:
(Refer to Op @ MA.372. l/l)
Uncouple: hoses (6) and (71, Fig. IV (protecting the
alternator from water entry at “a”).
Disconnect the engine cooling fan thermal switch.
Remove the engine heat sink.
Extract, Fig. Ill:
- the screws that secure horn (2) support, passing
through the wheelarch,
- the wheelarch lining. Disconnect:
- wiring harnesses (3) from the battery positive lead,
Fig. Ill,
- the ground cable from the gearbox,
- the wiring harness from the reversing lamp switch.
Remove, Fig. Ill:
- the pressure regulator accumulator,
- pipe (4) between pressure regulator and brake accu-
mulator.
Vehicle with air conditioning option:
- the belt protective cover,
- the air conditioning compressor drive belt
Uncouple:
- the air intake casing position accelerator cable,
- the high pressure pump rubber suction pipe,
- the high pressure pump outlet pipe (5) and its attach-
ment, Fig. Ill.
Disconnect: Fig. V
- the throttle spindle switch (IO),
- knock sensor (14).
Uncouple: Fig. V
- pressure sensor pipe(91,
- supplementary air pipe (I I),
- cylinderhead cover pipe (I 21,
- breather pipe (8).
Remove suction pipe (I 3) situated between the flow-
meter and the turbocharger or between the flowme-
ter and the inlet manifold.

- crankshaft key horrrontally (with mark “c” stagge-
rred by 5’ upwards),
- mark “a” or “d” on camshaft,
- mark “b” on the rntermedrate shaft.
- Each timing mark on the belt must line up with the
tooth wheel marks.
Fit the belt (avoid contact with oil or grease).
Release, Fig. I and 111,
- tensioner roller screws (I 1 and 12) (let the spring act)
then tighten the screws.
Turn:
- the crankshaft 180’ clockwise.
Do not turn backwards
Release:
- the tensioner roller fixing screws then retrghten
starting with the upper screw (I ), Fig. I and Ill.
Turn:
- the crankshaft a further two turns clockwise.
Slacken, Fig. I and Ill:
- tensioner roller screws (1) and (21, (let the spring
react),
- then retighten starting with screw (I 1.
Fit:
- tool 6012-T., Fig. II. Install, Fig. lb:
the trming belt casing,
crankshaft pulley 13),
trghten screw (4)
to 8 mdaN on engine --r-829.A5
to 12.5 mdaN on engrne -+J6T.A5QQ
- the alternator belt and cover,
- the wheelarch rubber sealing strip.
Remove, Fig. II,
- tool 6012-T.
Fit:
- the cylinder head cover and gasket
ttightenrng torque: 0.6 mdaN).
Recouple:
- the accelerator control rod,
- the flexible hose,
- the cold start flap control cable.
Refit:
- the wheel,
Lower the vehicle to the ground.
NOTE:
- Camshaft toothed pulleys of engines 829.A5 and
J6T.A500 are identical but the fitment is different,
Fig. I.
- If, after carrying out the belt tensioning operation,
the timing belt is noisy when the engine is hot,
retension the belt with the engine hot.

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

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