function Citroen C3 PLURIEL 2004 1.G User Guide

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INJECTION
XSARA PICASSO
CHECKS: LOW PRESSURE FUEL SUPPLY CIRCUIT
Engines: RHY RHZ
Tools.
[1] Ø 10 mm
low pressure connector: 4215T.
[2] Ø 8 mmlow pressure connector: 4218 T.
[3]Pressure gauge for testing boost pressure: 4073 T Kit 4073 T
Connect the tool [1]between the booster pump and the fuel filter (white mark at "a" on the
fuel supply pipe).
Connect the tool [2]downstream of the diesel injectors, between the high pressure fuel
pump and the fuel filter (green mark at "b"on the fuel return pipe).
WARNING: Any check of pressure downstream of the fuel filter is PROHIBITED.
Checks on pressure:static.
Switch on ignition
For 3 seconds(normal functioning):
Fuel supply pressure shown by the pressure gauge [3] = 1.8 ± 0.4 Bar. Fuel return pressure shown by the pressure gauge [3] = 0.5 ± 0.4 Bar.
B1BP1TWD

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INJECTION
XSARA PICASSO CHECKS: LOW PRESSURE FUEL SUPPLY CIRCUIT
Engines: RHY RHZ (continued)
Checks on pressure: dynamic.Engine running, at idle (normal functioning):
Fuel supply pressure shown by the pressure gauge [3] = 2 ± 0.4 Bar. Fuel return pressure shown by the pressure gauge [3] = 0.7 ± 0.4 Bar.
Abnormal functioning
Impossible to start the engine:
Fuel supply pressure less than 0.8 Bar:
Check the low pressure regulator incorporated in the filter (locked open). Check the high pressure pump distribution valve (locked shut).
Check: diesel injector return flow.(Table below)
Uncouple the diesel injector return pipe.
Fuel supply pressure Fuel return pressure Checks
Between 3and 3.5 Bar 0,7 ± 0,2 BarCheck the condition of the diesel filter
More than
3.5 Bar
More than 3.5 Bar
Less than 0.7 Bar
More than 0.7 Bar
Check the low pressure regulator incorporated in
the filter (locked shut): replace.
Check the fuel return circuit
(pipe pinched or trapped…)
Between 0.8 and 1.5 BarLess than 0.7 BarCheck the fuel suppy circuit:
Booster pump (low pressure), piping.
Check:
Observe:
The flow should be drop by drop.
Diesel injector functioning correctly.
Excessive fuel return.
Diesel injector locked shut.

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CLUTCH
GEARBOX
TRANSMISSION
RECOMMENDATIONS PRECAUTIONS: MA PILOTED MANUAL GEARBOX
Operations on electrical components.Do not disconnect:
The battery when the engine is running.
The ECU with the ignition switched on.
The clutch and gearbox actuators with the ignition switched on.
When carrying out electrical checks: The battery must be correctly charged.
Never use a voltage source higher than 16V.
Never use a lamp to supply an actuator directly.
Before disconnecting connector, check: The condition of the various contacts (for deformation, corrosion, etc).
The presence and the status of the mechanical unlocking.
Driving the vehicle.
IMPERATIVE:
Never move the vehicle with the ignition switched off.
Never push the vehicle to attempt to start it
(impossible with a piloted
manual gearbox).
Towing.
Conditions for towing.
It is necessary to lift the front of the vehicle to tow it, after having
positioned the gear lever in neutral. If there is a gearbox fault or
malfunction, the vehicle can remain immobilised depending on theseriousness of the fault.
If a gear is engaged,the conditions for immobilisation of the
vehicle are:
Combustion engine stopped (the engine should not be started).
The clutch is open (clutched).
In these conditions are met, you can lift the front of the vehicle to tow it.
If it should not be possibe to lift the front of the vehicle, there are
ways to unblock it:
Engage «N», using a diagnostic tool.
Engage «N», without using a diagnostic tool.
Engines: HFX KFV NFU 8HX
C2

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CLUTCH
GEARBOX
TRANSMISSION
RECOMMENDATIONS PRECAUTIONS: AL4 AUTOMATIC GEARBOX
Engines: KFV NFU RFN RHZ
If a gearbox malfunction occurs, there are two possible
configurations depending on the seriousness of the fault:
Gearbox in backup mode with a replacement programme of
(the
fault values are taken in substitution).
Gearbox in backup mode with an emergency programme (3rd
hydraulic).WARNING:In the emergency programme, an impact is felt
when changing P/R, N/R and N/D.
Réception client.
Discuss with the customer, to find out all the malfunction symptoms.Oil quality Oil level.
Oil quality.
If the gearbox has suffered a serious fault resulting in a malfunction
or the destruction of a clutch, the oil will overheat and become
contaminated with impurities: the oil is said to be
«burnt».
This is characterised by a black colour and the presence of an
unpleasant smell.
ESSENTIAL: The gearbox must be replaced.
Oil level (see corresponding operation).
An excessive oil level can result in the following consequences:
Excessive heating of the oil.
Oil leaks.
An insufficent level causes the destruction of the gearbox.
Top up the level of oil in the gearbox (if necessary).
Check using a diagnostic tool.
Read the fault codes
(engine and gearbox).
Absence of fault codes.Carry out parameter measures, actuator tests and a road test.
Presence of fault codes.Carry out the necessary repairs.
Delete the fault codes.
Carry out a road test to check the repair and, if need be, modify the
gearbox ECU parameters
(this is essential after an initialisation
of the ECU).
XSARA XSARA PICASSO
Procedure to be followed prior to carrying out repairs on AL4 autoactive gearbox

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CLUTCH
GEARBOX
TRANSMISSION
AL4 AUTOMATIC GEARBOX
In passenger compartment.The gear selector is guided by the shape of the stepped gate and by a retaining spring which
pulls it to the left hand side.
The gear selector control has
5 positions:
Position
«P»: Park (locking and immobilisation of the vehicle).
Position «R»:Reverse gear.
Position «N»: Neutral.
Position «D»: Drive (use of the 4 gears in their autoadaptive automatic function).
Position «M»: Manual (this position lets the driver select his own gears in sequential mode
by pulling the gear selector to «M-»or pushing it to «M+»).
NOTE:Only the positions «P»or «N»authorise the starting of the engine.
In position
«M», selection is by an electronic sensor located close to the gear lever.
The variation of flux necessary to the movement of the sensor cells is obtained by a magnet
located on the lever itself. This enables the change of status.
Engines: KFV RFN
C3 XSARA PICASSO
B2CP3H7DB2CP3MUD
XSARA PICASSOC3

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BRAKES
B3FP7BSD
BRAKE SPECIFICATIONS
Braking circuit without ABS REF (drum brakes at the rear)
Braking system specifications
Braking circuit at «X».
Front brakes with ventilated discs
(*).
Rear brakes with eitther drums or discs
(*).
Handbrake lever controlling cables acting on the
rear wheels.
The compensator and main brake limiter functions
are assured by the
ABS EBD system.
NOTE: REF= Electronic Brakeforce Distribution.
(*)= according to version.
C2

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BRAKES
BRAKE SPECIFICATIONS (WITH ABS REF)
Engine type HFX KFV KFU NFU 8HX 8HW 8HV 8HY
Master cylinder
22,2(*)
Ø Master vac
228,6
mm Caliper /piston LUCAS/TRW LUCAS/TRW LUCAS/TRW LUCAS/TRWmakesC 48/13 48 C 54/22 54 C 48/13 48 C 54/22 54
Disc Plain266 266
FT Disc thickness/minimum thickness13/11 13/11
Ø
mm Disc Ventilated266 266
Disc thickness/minimum thickness22/20 22/20
Brake pad gradeTEXTRR T 4144
Ø Cylinder or caliperLUCAS C38 HR 9/13
mm Disc Plain247 247
RR Disc thickness/minimum thickness9/7 9/7
Ø Drum / Max. thickness /
mm Width203/205/38 203/205/38
MakeDONGALFER DON GALFER
Brake lining grade8259 G 4554 8259 G 4554
(*)= With emergency braking system.REF= Electronic brakeforce distribution.NOTE:Braking compensators = The compensator and limiter functions for the main brakes are assured by the ABS REF system. 1.1i 1.4i 1.4i 16V 1.6i 16V 1.4 HDi 1.4 HDi 16V
C3

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BRAKESBRAKE SPECIFICATIONS (WITH & WITHOUT ABS REF)
Engine typeKFV 8HX KFV NFU 8HX
Master cylinder
20,6 22,2(*)
ØMaster vac
203,2228,6
FT mm Makes /piston makesLUCAS/TRW C38 HR 9/13
Disc Ventilated266
Disc thickness/minimum thickness22/20
Brake pad gradeTEXTRR T 4144
ØCylinder or caliperLUCAS/TRW C 38/13 38
mmDiscPlain247
RR Disc thickness/minimum thickness9/7
ØDrum / Max. thickness /
mmWidth203/205/38203/205/38
MakeDONGALFERDON
Brake lining grade8259/1 G 4554 8259/1
(*)= With emergency braking system.(CICR = Compensator integral to the wheel cylinder)Braking compensator (Vehicle without ABS)REF= Electronic brakeforce distribution.
Supplier/Type/Cutoff pressure (Bar) :LUCAS/CICR/27
Braking compensator (Vehicle with ABS)NOTE:Braking compensators = The compensator and limiter functions for the main brakes are assured by the ABS REF system.
C3 PLURIEL
Sans ABS REF Ftec ABS REF
1.4i 1.4 HDi 1.4i 1.6i 16V 1.4 HDi

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BRAKES
B3FP161D
BRAKE SPECIFICATIONS
Braking circuit without ABS REF (drum brakes at the rear)
Braking system specifications
Braking circuit at «X».
Front brakes with ventilated discs
(*).
Rear brakes with eitther drums or discs
(*).
Handbrake lever controlling cables acting on the rear
wheels.
The compensator and main brake limiter functions are
assured by the
ABS EBD system.
NOTE: REF= Electronic Brakeforce Distribution.
(*)= according to version.
C3 C3 PLURIEL

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ELECTRICAL
SYSTEM
CHARGING CIRCUIT ALTERNATOR WITH MONOFUNCTION REGULATOR
Checking the alternator output.
Connect as shown in the diagram opposite, using an ammeter (A), a voltmeter (V),
and a rheostat
(R)or a Volt/Ammeter/Rheostat combination.
Referring to the vehicle’s equipment specification
(see table opposite), adjust the
engine speed and rheostat charge to obtain
U = 13.5 V.
Reminder:The excitation energising current will flow through the warning lamp;
check that the warning lamp comes on when the ignition is switched on. It shouldgo out when the engine has started
(accelerate slightly).
Checking the voltage regulator.
Set the rheostat to zero and disconnect all the electrical consumers.
Display
3000alternator rpm. If U alternator is > 14.7 V, the regulator is faulty.
Note:These tests should be performed with the engine hot and the battery fully
charged.
Method of reading the alternator speed.
Fit a reflecting shim on the pulley of the alternator.
Adjust a stroboscope to the frequency equivalent to the control speed.
(e.g. 2000 rpm = 2000/60 = 83 Hz).
Adjust the engine speed so that the shim appears fixed.
D1AP025C
A: Ammeter.B:Battery.G: Generator.L: Warning lamp.K1and K2:Switch.R: Electric charge.S:Shunt 200mV/200A.V:Voltmeter.1 : Alternator.