warning Citroen C5 2000 (DC/DE) / 1.G Owner's Guide

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100
EXHAUST SPECIFICATIONS
Engine : 4HX
Tightening torques (m.daN)
(2) Collars 2.5 ± 0.3
Repair
Respect the precautions to be taken when
operating on a vehicle.
The flexible pipe must not come into contact
with corrosive products.
Do not distort the flexible pipe by more than20°
angular (X), 20mm axial, 25 mmshear (Y)
(flexible pipe not fitted).
Do not distort the flexible pipe by more than 3°
angular (X),0 mmaxial, 3 mmshear
(Y)(flexible pipe in place).
WARNING :Non-respect for these precautions
will result in a reduction in the lifetime of the
flexible pipe. It is thus essential to disconnect or
remove the exhaust line in any operation neces-
sitating the lifting of the power unit.
Engine Front pipe (1) Pre-catalyser (3) Particle filter (4) Rear silencer (5)
4HX Flexible PSA K 186 PSA F 002 PSA 4158

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101
6FZ RFN RLZ RHY RHZ
8.8 - 9.3 (*) 8.8
21dm
2
1.4 bar
89°C 83°C
1x250W (1-speed) 1x350 W (2-speed)
91°C 97°C
105°C
11 8 ° C
6 mn (Max.)
(*) = With automatic gearbox
COOLING SYSTEM SPECIFICATIONS
Engines : 6FZ – RFN - RLZ - RHY - RHZVehicle without air conditioning
Engine plate
Capacity
Radiator surface
Pressurisation
Opening of thermostatic
regulator
Cooling fan
1st speed
2nd speed
Warning
Post-cooling1.8i 16V
2.0i 16V
3.0i 16V 2.0 HDi

Downloaded from www.Manualslib.com manuals search engine 6FZ RFN RLZ XFX RHY RHZ 4HX
8.8 - 9.3 (*) 8.8 14 10.7 (*)
27 dm
221 dm2
1.4 bar
89°C 78°C 89°C
1x500 W 3-speed
1 = 97°C 10 Bars
2 = 101°C 17 Bars
3 = 105°C 22 Bars
11 5 ° C 11 2 ° C 11 5 ° C
11 8 ° C
6 minutes (Max.)
ENGINE
102
COOLING SYSTEM SPECIFICATIONS
Engines : 6FZ - RFN - RLZ - XFX - RHY - RHZ - 4HXVehicle with air conditioning
Engine plate
Capacity
Radiator surface
Pressurisation
Opening of thermostatic
regulator
Cooling fan
1st speed
2nd speed
3rd speed
Aircon cut-out
Warning
Post-cooling1.8i 16V
2.0i 16V 2.0 HPi
3.0i 16V 2.0 HDi 2.2 HDi
(*) = With automatic gearbox

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INJECTION
PROHIBITED OPERATIONS: HDi DIRECT INJECTION SYSTEM
Engines : RHY - RHZ - 4HX
Diesel injectors.
WARNING: Diesel and ultrasonic cleaners are prohibited.
Do not separate the following components from the diesel injector carrier (2):
- Diesel injector(e) (no replacement parts).
- Electromagnetic element(c)(no replacement parts).
Do not alter the position of the nut(d)(malfunction).
Do not separate the connector(f)from a diesel injector.
It is forbidden to clean the carbon deposits from the diesel injector nozzle.
B1HP19NC

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INJECTION
SAFETY REQUIREMENTS : HDi DIRECT INJECTION SYSTEM
Engines : RHY - RHZ - 4HX
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
CHECKS : LOW PRESSURE FUEL SUPPLY CIRCUIT
Engines : RHY - RHZ - 4HX
Engines : RHY - RHZ
Engine : 4HX
TOOLS
[1] Ø 10 mmlow pressure connector: 4215-T.
[2] Ø 8 mmlow pressure connector: 4218 -T.
[3] Pressure gauge for testing boost pressure : 4073-T Tool kit 4073-T
[4] Extension: 4251-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.
NOTE : To check the pressures while the vehicle is being driven, insert tool[4] Between
tool[3] and tools[1] et[2].
Checks on pressure : static.
- Switch on ignition
- For 3 seconds(normal functioning):
- Fuel supply pressure shown by the pressure gauge [3] = 2.6 ± 0.4 Bar.
- Fuel return pressure shown by the pressure gauge [3] = 0.6 ± 0.4 Bar.
B1BP20JDB1BP27BD

Downloaded from www.Manualslib.com manuals search engine FEATURES OF MULTIPOINT INJECTION SYSTEM
Summary
(1) Air pump
(2) Power steering pressure sensor
(3) Engine management ECU
(4) Canister purge electrovalve
(5)Butterfly housing
(6)Idle regulation stepper motor
(7) Inlet air temperature sensor
(8)Inlet housing heater element
(9)Butterfly potentiometer
(10)Automatic gearbox (Option)
(11)Built-in systems interface
(12) Transponder
(13)Diagnostic connector
(14) Ignition injection test warning lamp
(15)Battery
(16)Immobiliser unit
(17) Air conditioning
(18) Instrument panel
(19)Fuel tank
(20)Fuel pump, gauge and filter assembly(21)Canister reservoir
(22) Downstream oxygen sensor
(23)Upstream oxygen sensor
(24)Air inlet valve
(25)EGR electrovalve
(26)Camshaft position sensor
(27) Ignition coil
(28)Sparking plug
(29) Injector supply rail
(30)Injectors
(31) Air inlet pressure sensor
(32) Engine coolant temperature sensor
(33) Engine speed sensor
(34)Cooling fan unit
(35) Knock sensor
B1HP1C5P
139
INJECTION

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INJECTION
FEATURES OF BOSCH ME 7.4.6 MULTIPOINT INJECTION SYSTEM
Summary
(1) Rev counter
(2)Consumption information
(3)Ignition injection test warning lamp
(4) Air conditioning ECU (according to equipment)
(5)Multifunction screen
(6)Built-in systems interface (BSI)
(7) Transponder
(8)Automatic gearbox ECU(according to equipment)
(9 Pump, fuel filter and pressure regulator assembly
(10)Battery
(11)Pressostat
(12)Engine speed sensor
(13)Camshaft position sensors (x2)
(14)Motorised butterfly housing
(15)Canister purge electrovalve
(16)Cooling fan unit
(17)Pencil type ignition coils (x2)
(18) Petrol injectors (x6)(19) Variable timing electrovalves (x2)
(20)Upstream oxygen sensors (x2)
(21) Downstream oxygen sensors (x2)
(22)Engine coolant thermal sensor
(23) Knock sensors (x2)
(24)Power steering pressure sensor
(25) Integral pressure sensor
(26)Accelerator pedal position sensor
(27)Inlet air thermal sensor
(28) Diagnostic connector
(29) Multifunction double relay
(30) Ignition injection ECU
B1HP1B2P

Downloaded from www.Manualslib.com manuals search engine 154
INJECTION
Component (diagr.) Supplier Reference Observations
Diagnostic warning lamp31Incorporated in the dashboard instrument panel.
Central diagnostic socket32In the passenger compartment.
Electronic immobiliser33
Consumption information 34Incorporated in the dashboard instrument panel.
Rev counter35Incorporated in the dashboard instrument panel.
Preheater warning lamp36Incorporated in the dashboard instrument panel.
Pre-postheating unit37NAGARES 960411P
CARTIER 735068
Preheater plugs38CHAMPION CH170
BOSCH0250202032
Cruise control switch39
Automatic gearbox ECU
40
Air conditioning compressor41SANDEN SD7V16
Additional heating by heating
42 a
elements in boiler42 b
Additional heating control
relay43
FEATURES OF BOSCH HDi DIRECT INJECTION SYSTEM
Electrical circuit (continued)

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INJECTION
FEATURES OF BOSCH HDi DIRECT INJECTION SYSTEM
Component (diagr.) Supplier Reference Observations
88 way connector. Flash eprom type sequential
Ignition injection ECU1BOSCHEDC 15C2 injection (reprogrammable eprom). Installed in the
ECU compartment.
FIRST3 way black connector. Installed in the front RH
Inertia switch34INERTIA Type 505wheelarch, fixed on the suspension mounting.
SWITCHManual rearming in the event of the cut-out system
being activated.
Injection double relay15BITRON 240 10915 way black connector. Installed in the ECU
compartment.
Battery14VA R TAL2 – 12 volts
400 ampsEngine compartment..
Atmospheric pressure sensor13BOSCHIncorporated in the injection ECU.
Central diagnostic socket36In the passenger compartment.
Diagnostic warning lamp35Incorporated in the dashboard instrument panel.
Vehicle speed sensor10EATON On the gearbox.
Preheater warning lamp40Incorporated in the dashboard instrument panel.
Rev counter39Incorporated in the dashboard instrument panel.
Consumption information 38Incorporated in the dashboard instrument panel.
Engine speed sensor2ELECTRIFIL
Camshaft position sensor3ELECTRIFIL Airgap value : 1,2 mm.
Electrical circuit