2000 Citroen C5 Injection

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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
(1) Butterfly housing(3) Electrovalve (black connector)
(2) EGR valve(tube with blue marking)(4) Electrovalve(blue connector)
TOOL
[1] Manual vacuum pump : FACOM DA 16.
ESSENTIAL : Respect the safety and cleanliness requirements specific to
high pressure diesel injection (HDi) engines.
EGR electrovalve
- Check, not under load, between the electrovalve(4)and the EGR valve (2).
- Connect the tool[1] between the electrovalve (3)and the butterfly housing (1).
- Compare readings with the values in the table below.
Butterfly housing electrovalve.
- Check, not under load, between the electrovalve (3)and the butterfly housing (1).
- Connect the tool[1]between the electrovalve(3) and the butterfly housing(1).
- Compare readings with the values in the table below.
Engine speed (rpm) Vacuum value (bar)
7800.5 Bar
25000 Bar
B1HP1BVD

Downloaded from www.Manualslib.com manuals search engine 132
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

Downloaded from www.Manualslib.com manuals search engine CHECKS : EXHAUST GASES RECYCLING CIRCUIT
Engine : 4HX
TOOL
[1] Manual vacuum pump : FACOMM DA 16.
ESSENTIAL : Respect the safety and cleanliness requirements specific to
high pressure diesel injection (HDi) engines..
Electrovalve (EGR).
- Check, not under load, between the electrovalve(3)(blue connector) and the EGRvalve (2)
(tube with blue marking).
- Connect the tool[1]between the electrovalve (3) and the EGRvalve(2).
- Compare readings with the values in the table below.
Butterfly housing electrovalve
- Check, not under load, between the electrovalve (4) (black connector)and the butterfly housing (1)
(Metering pump cold), (tube with white marking).
- Connect the tool[1]between the electrovalve (4) and the butterfly housing(1).
- Compare readings with the values in the table below.
Engine speed (rpm) Vacuum value (bar)
7800.5 Bar
25000 Bar
B1HP1B8D
133
INJECTION

Downloaded from www.Manualslib.com manuals search engine 134
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

Downloaded from www.Manualslib.com manuals search engine CHECKS : TURBO PRESSURE
Engines : RHY - RHZ
TOOLS.
[1] Pressure gauge for checking boost pressure: 4073-T.A Tool kit 4073-T
[2]Sleeve for checking boost pressure: 4185-T
[3] Adaptor sleeve : 4219-T
Checks.
Preparation for RHY engine
Remove :
- The collars(3).
- The sleeve.
- Insert the tool [2]between the tube(1)and the duct(2).
- Position the tool[1]in the vehicle.
- Connect the pressure gauge[1] to the tool [2]with its tube (a)long enough for
the gauge to be positioned inside the vehicle.
Checks.
Preparation for RHZ engine
- Remove the collar fixing (3).
- Insert the tool [2]equipped with tool[3], between the tube (1)and the duct(2).
- Position the tool [1]in the vehicle.
- Connect the sleeve [2]on the pressure gauge[1]with the tube(a).
BHP12JDB1BP1ZXD
Engine RHZ Engine RHY
135
INJECTION

Downloaded from www.Manualslib.com manuals search engine 136
INJECTION
CHECKS : TURBO PRESSURE
Engines : RHY - RHZ
Procedure.
ESSENTIAL : Observe the following checking requirements :
- Engine at running temperature.
- Vehicle in running order.
- Engine at full load.
- Start the engine.
- Engage first gear and start the vehicle.
- Engage the gears up to third gear.
- Decelerate to 2000 rpm.
- Gradually accelerate.
- Check the pressure : 0.95 ± 0.05 Bar.
- Remove the tools [1]and [2].
Refit
- The sleeve.
- The collars(3).
- Tighten the collars (3).
C5FP0ACC

Downloaded from www.Manualslib.com manuals search engine CHECKS : TURBO PRESSURE
Engine : 4HX
TOOL
[1]Pressure gauge for checking pressure7073-T.A.
[2] Extension cable for taking pressure8607-T.A
[3]Union and hose for taking pressure8607-T.B.
[4] Adaptor for taking pressure8607-T.C.
[5]Unions and hoses for taking pressure4088-T
Checks.
ESSENTIAL : Respect the safety and cleanliness requirements specific to
high pressure diesel injection (HDi) engines.
Preliminary operations.
Carry out the following operations:
Remove the screw (1).
Disconnect the tube (2).
Move aside the pressure sensor (3).
Preparation of tools : in position on the vehicle.
Fit as follows :
Remove the hose(a)of tool [5], screw in its place the tool [3], remove the hose (b)of tool [5],
screw the hose (b)of tool [5]on the pressure gauge[1], screw the adaptor [4]onto the tool [5]
Connect the tube(2) of the pressure sensor(3) on the tool [4], tighten the tube(2) with a
Serflex type collar.
B1BP28DCE5AP1SUC
137
INJECTION