2000 Citroen C5 Air

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INJECTION
AIR SUPPLY CIRCUIT SPECIFICATION
Engine : 4HX
ESSENTIAL : Respect the safety and cleanliness
recommendations.
Tool.
[1] Manual vacuum pump: FACOMM DA 16.
Checks.
ESSENTIAL : Respect the safety and cleanliness
recommendations that are specific to high pressure
diesel injection (HDi) engines.
B1HP1ARP

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INJECTION
CHECKS : AIR SUPPLY CIRCUIT
Engine : 4HX
Vacuum pump.
- Connect the tool [1] on the vacuum pump (3).
- Start the engine.
- The vacuum should be 0.8 bar at750 rpm.
Boost vacuum regulation electrovalve.
- Connect the tool [1] between the electrovalve (2)and the valve(1).
Compare readings with the values in the table below.
Boost pressure regulation valve.
- Connect the tool [1] on the valve(1).(Grey marking on pipe).
- Appy a vacuum of 0.8 bar. The rod "a"should move 12 ± 2 mm.
- Rod "a"should be moved 12 mm.
«Swirl» control electrovalve.
- Connect the tool[1] as an adaptor between the electrovalve (4)and the control diaphragm of the «Swirl» (5).
- Compare readings with the values in the table below :
«Swirl» control diaphragm.
- Connect the tool[1] on the control diaphragm of the «Swirl» (5).
- Apply a vacuum of approx. 0,6 Bar; the pin (6)should be at the end stop, at «b».
Engine speed (rpm) Vacuum (Bar)
7800.6 Bar
40000.25 Bar
Engine speed (rpm) Vacuum (Bar)
7800.6 Bar
40000.25 Bar

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INJECTION
CHECKS : EXHAUST GASES RECYCLING CIRCUIT
Engines : RHZ – RHY
EGR valve
- Connect tool [1]on the EGR valve capsule take-off (2).
- Apply a vacuum of approx.0,6 barto activate the EGRvalve.
- In abruptly suppressing the vacuum, the valve should click and lock itself back on its seating.
- Repeat the operation several times.
Butterfly housing
- Remove the air duct between the air/air exchanger and the butterfly housing (5),(1).
- Connect tool[1]on the butterfly housing vacuum capsule (1).
- Apply a vacuum of approx. 0,8 bar, the flap (a)of the butterfly housing(1)should be closed.
B1HP1BWCB1BP2ADC

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INJECTION
CHECKS : EXHAUST GASES RECYCLING CIRCUIT
Engine : 4HX
EGR valve
- Connect tool[1]on the take-off (a)of the EGR valve capsule (2).
- Apply a vacuum of approx. 0,6 barto activate the EGRvalve.
- In abruptly suppressing the vacuum, the valve should click and lock itself back on its seating.
- Repeat the operation several times.
Butterfly housing
- Remove the air duct between the air/air exchanger and the butterfly housing (1).
- Disconnect the tube (white marking)on the electrovalve (4)(black connector).
- Connect tool[1]on the tube with the white marking.
- Apply a vacuum of approx. 0,8 bar, the flap (b)of the butterfly housing (1) should be closed.
B1BP29NCB1BP29PC

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INJECTION
B1BP28ECC5FPOBLC
CHECKS : TURBO PRESSURE
Engine : 4HX
Preparation of tools : in position on the vehicle (continued).
Screw the tool [3] on the take-off of the turbo air radiator at «c».
Place the pressure gauge on the cup holder at «d».
Connect the extension [2]on the hose «b»and tool [5].
ESSENTIAL : Observe the following checking requirements.
- Start the engine.
- Engage first gear and start the vehicle.
- Engage the gears up to third gear.
- Decelerate to1500 rpm.
Accelerate gradually : the pressures should be the following :
1,1 ± 0,05 b at 2000 rpm
1,2 ± 0,05 b at 3000 rpm.
Return the vehicle to normal.
Remove the tools [1],[2], [3], [4]and [5].
Reposition the pressure sensor (3).
Couple the tube(2).
Refit and tighten the screw (1).

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 MULTIPOINT INJECTION SYSTEM
Fuel circuit
Air inlet circuit
(diagr.) Component Supplier Reference Observations
30
4
19
21
20
7
31
6
5
9Recommended fuel
Petrol injector
Canister purge electrovalve
Fuel tank
Canister reservoir
Fuel pump and gauge assembly
with integral fuel filter
Air temperature sensor
Air inlet pressure sensor
Idle regulation stepper motor
Butterfly housing
PotentiometerSAGEM
BOSCH
SAGEM (1)
SOLVAY
MGI
MARWAL
MAGNETI
MARELLI
BOSCH
MGI
MAGNETI
MARELLI (1)
MGI
MAGNETI
MARELLI280520274
IAT S04
0261230034
B13 (1)Unleaded 95 RON or 98 RON
2 way black connector. Resistance : 12,2 ohms
2 way brown connector. Installation : between the engine
fusebox and the brake amplifier
Capacity = 66 Litres
Installation : in the rear LH wheelarch
6 way black connector. Pressure : 3,5 Bars.
2 way grey connector, fixed on the butterfly housing
3 way grey connector integral with the inlet manifold.
4 way black connector, fixed on the butterfly housing
The butterfly housing comprises the inlet air temperature
sensor, the butterfly potentiometer, the electric motor.
3 way black connector, installed on the butterfly housing.
(1) = RFNengine

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INJECTION
FEATURES OF MULTIPOINT INJECTION SYSTEM
Exhaust system
(diagr.) Component Supplier Reference Observations
23
22
1
2EGR electrovalve
Upstream oxygen sensor
Downstream oxygen sensor
Air pump
Air inlet valveDELPHI
NGK
BOSCH (1)
NGK
BOSCH (1)
SAGEM
SAGEM97097 A
OZA 495-PG2
OZA 341-PG7
2 590 004
2 580 0345 way black connector, installed on the cylinder head.
4 way blue connector, length of wire : 555 mm,
Tighten to 4.5 ± 0.4 m.daN.
6 way black connector, length of wire : 1500 mm,
Tighten to 4.5 ± 0.4 m.daN.
2 way black connector, located under the battery.
Installed on the cylinder head.
(1) = EngineRFN