Fuel injection Citroen C2 2004 1.G User Guide

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INJECTION
Emission standard Engine type
Injection make
and type
PETROL INJECTION
XSARA XSARA PICASSO
Air temperature sensor
resistive value (ohms)
XSARA PICASSO
XSARA 2
SAGEM
S2000M. MARELLI
6LP BOSCH
M.7.4.4.BOSCH
M.7.4.4.SAGEM
S2000M. MARELLI
6LP
Fuel pressure (bars)
Overspeed cutoff (rpm)
Injector resistive value (ohms)
Engine coolant temperature
sensor resistive value (ohms)
Idling actuator or stepper
motor resistive value (ohms)
KFW
L4/IFL5/L5 L4/IFL5 L4/IFL5 L4 IFL5L4/IFL5
1.4i 1.6i 16V 2.0i 16V 1.6i
2.0i 16V
1.8i 16V
RFN
NFU NFV 6FZ RFN
3,53,5
3
3 3,5 3,5
14,5 14,5 14,5
14,512,2 14,5
5500
5700
6000
5800
5500 6000
Stepper motor:53 3800 at 10° C 2 500 at 20° C 800 at 50° C 230 at 90° C
3800 at 10° C 2 500 at 20° C 800 at 50° C 230 at 90° C

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INJECTION
SAFETY REQUIREMENTS: HDi DIRECT INJECTION SYSTEM
Engines: HDi ALL TYPES
SAFETY REQUIREMENTS.
Preamble.
All interventions on the injection system must be carried out to conform with the following requirements and regulations:
Competent health authorities.
Accident prevention.
Environmental protection.
WARNING:Repairs must be carried out by specialised personnel informed of the safety requirements and of the precautions to be taken.
Safety requirements.
IMPERATIVE: Take into account the very high pressures in the high pressure fuel circuit (1350 bars), and respect the requirements below: No smoking in proximity to the high pressure circuit when work is being carried out.
Avoid working close to flame or sparks.
Engine running: Do not work on the high pressure fuel circuit.
Always stay clear of the trajectory of any possible jet of fuel, which could cause serious injuries.
Do not place your hand close to any leak in the high pressure fuel circuit.
After the engine has stopped, wait
30 secondsbefore any intervention.
NOTE:This waiting time is necessary in order to allow the high pressure fuel circuit to return to atmospheric pressure.

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INJECTION
SAFETY REQUIREMENTS: HDi DIRECT INJECTION SYSTEM
Engines: HDi ALL TYPES
CLEANLINESS REQUIREMENTS.
Preliminary operations.
IMPERATIVE: The technician should wear clean overalls.
Before working on the injection system, it may be necessary to clean the apertures of the following sensitive components:(refer to corresponding procedures) Fuel filter.
High pressure fuel pump.
High pressure fuel injection common rail. High pressure fuel pipes
Diesel injector carriers.
IMPERATIVE: After dismantling, immediately block the apertures of the sensitive components with plugs, to avoid the entry of impurities.
Work area.
The work area must be clean and free of clutter.
Components being worked on must be protected from dust contamination.

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INJECTION
PROHIBITED OPERATIONS: SIEMENS HDI DIRECT INJECTION SYSTEM
Engines: 8HX 8HW 8HZ
Cleaning.
The use of high pressure cleaners is prohibited.
Do not use compressed air.
Fuel supply circuit.
Required fuel: diesel.
Electric circuit.
Swapping injection ECUs between two vehicles will render it impossible to start either vehicle.
It is forbidden to supply a diesel injector with
12 volts.
High pressure fuel pump.
Do not separate the following components from the high pressure fuel pump (5):
Sealing ring
(a)(no replacement parts).
High pressure outlet connector
(b)(will cause a malfunction).
PS: HDi = High pressure Diesel injection
B1HP1K9C
C2 C3 XSARA

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INJECTION
PROHIBITED OPERATIONS: DELPHI HDI DIRECT INJECTION SYSTEM
Engines: 8HY 8HV
Cleaning.
The use of high pressure cleaners is prohibited.
Do not use compressed air.
Fuel supply circuit.
Required fuel: diesel.
Electric circuit.
Swapping injection ECUs between two vehicles will render it impossible to start either vehicle.
It is forbidden to supply a diesel injector with
12 volts.
High pressure fuel pump.
Do not separate the following components from the high pressure fuel pump (5):
Sealing ring
(a) (no replacement parts).
High pressure outlet connector
(b)(will cause a malfunction).
PS:HDi = High pressure Diesel injection
B1HP1J6C
C3

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INJECTION
PROHIBITED OPERATIONS: DELPHI HDI DIRECT INJECTION SYSTEM
Engines: 8HY 8HV
B1HP1J7CB1HP1J8C
Fuel high pressure injection common rail.
Do not separate the pressure regulator «c»from the injection
common rail (2)(Risk of malfunction).
Diesel injectors.
WARNING:
Diesel and ultrasonic cleaners are prohibited.
Do not separate the following components from the diesel
injector carrier
(3):
Diesel injector (e)(no replacement parts).
Electromagnetic component «d»(no replacement parts).
It is forbidden to clean the carbon deposits from the diesel
injector nozzle..
C3

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INJECTION
PROHIBITED OPERATIONS: HDi DIRECT INJECTION SYSTEM
Engines: RHY RHZ
XSARA PICASSO
Cleaning.
The use of high pressure cleaners is prohibited.
Do not use compressed air.
Fuel supply circuit.
Required fuel: diesel.WARNING:Do not use other fuels.
Electric circuit.
Swapping injection ECUs between two vehicles will render it impossible to start either vehicle.
It is forbidden to supply a diesel injector with
12 volts.
High pressure fuel pump.
Do not separate the following components from the high pressure fuel pump (5):
High pressure fuel pump third piston deactivator (3)(no replacement parts).
High pressure fuel regulator (4)(no replacement parts).
Sealing ring (1)(no replacement parts).
High pressure outlet connector (3)(will cause a malfunction).
PS:HDi = High pressure Diesel injection
B1HP12CC

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INJECTION
PROHIBITED OPERATIONS: HDi DIRECT INJECTION SYSTEM
Engines: RHY RHZ
XSARA PICASSO
High pressure fuel injection common rail. Do not separate the connectors (7)from the common injection rail (6)(malfunction).
Diesel injectors.
WARNING:Diesel and ultrasonic cleaners are prohibited.
Do not separate the following components from the diesel injector carrier (9):
Diesel injector (8)(no replacement parts).
Electromagnetic element (11)(destruction).
Do not alter the position of the nut (10)(malfunction).
Do not separate the connector (12)from a diesel injector.
It is forbidden to clean the carbon deposits from the diesel injector nozzle.
Identification: Injector carrier
There are two types of diesel injector carrier classed according to fuel flow.
Identification by engraving or paint mark
B1HP12EC
B1HP12DC
B1HP16PC
IMPERATIVE: When replacing a
diesel injector carrier, order a
component of the same class.
(See repair manual)
Identification markings:
«a»:Supplier identification.
«b»:PSA identification number.
«c»:Class identification.
Injector carrier
Class 1
Class 2
Engraving
1
2
Paint mark
Blue
Green
Location
On the upper part of the
coil near to the fuel return
aperture

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INJECTION
CHECKS: LOW PRESSURE FUEL SUPPLY CIRCUIT
Engines: 8HX 8HW
Tools.
[1] Ø 10 mmlow pressure connector: 4215T.
[2]Pressure gauge for testing boost pressure: 4073T.A Tool kit 4073T
IMPERATIVE: Respect the safety and cleanliness specific to high pressure diesel
injection engines.
Link tools [1]and [2]in series between the fuel high pressure pump and the fuel filter.
ESSENTIAL:Check that the tool [2] is clean.
Check the negative pressure according to the table below:
Vacuum Observations
10 ±5 cmHg
Engine driven by the starter motor
20 ±5 cmHg
60 ±5 cmHgEngine running under full load
Supply circuit obstructed
(full tank
strainer, piping, fuel filter).
B1BP2NWC
C2 C3

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INJECTION
CHECKS: LOW PRESSURE FUEL SUPPLY CIRCUIT
Engines: 8HV 8HY 9HZ 9HY
Tools.
[1] Ø 10 mmlow pressure connector: 4215T.
[2]Pressure gauge for testing boost pressure: 4073T.A Tool kit 4073T
IMPERATIVE: Respect the safety and cleanliness specific to high pressure diesel
injection engines.
Remove the air filter duct.
Link tool [1]in series, downstream of the injectors, between the fuel high pressure pump
and the fuel filter at «a»and «b».
WARNING:Any checking of pressure downstream of the fuel filter is prohibited.
Switch on the ignition.
ESSENTIAL: Check that the tool [2] is clean.
Check the negative pressure according to the table below:
VacuumObservations
10 ±05 cmhg
Engine driven by the starter motor
20 ± 20 cmhg
60 ± 05 cmhgEngine running under full load
Supply circuit obstructed
(full tank
strainer, piping, fuel filter).B1BP2PHC
C3 XSARA PICASSO