c4 picasso Citroen C4 2005 2.G Repair Manual

Downloaded from www.Manualslib.com manuals search engine 288
INJECTION
CHECKS: LOW PRESSURE FUEL SUPPLY CIRCUIT
Tools.
[1] Ø 10 mm low pressure connector: 4215-T
[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
Engines: RHY - RHZ
XSARA PICASSO
Angl.-t2-page283-305-2005 9/01/06 10:18 Page 288

Downloaded from www.Manualslib.com manuals search engine 289
INJECTION
CHECKS: LOW PRESSURE FUEL SUPPLY CIRCUIT
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
Fuel supply pressure Fuel return pressure Checks
Between 3and 3.5bar0.7 ± 0.2 bar Check the condition of the diesel filter
More than 3.5bar Less than 0.7barCheck the low pressure regulator incorporated
in the filter
(locked shut): replace.
More than 3.5bar More than 0.7barCheck the fuel return circuit
(pipe pinched or trapped…)
Between 0.8and 1.5bar Less than 0.7barCheck the fuel supply circuit:
- Booster pump (low pressure), piping
Impossible to start the engine:Check: diesel injector return flow
(table below).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).Uncouple the diesel injector return pipe.
Check: Observe:
The flow should be drop by drop Diesel injector functioning correctly
Excessive fuel return Diesel injector locked shutEngines: RHY - RHZ (continued)
XSARA PICASSO
Angl.-t2-page283-305-2005 9/01/06 10:18 Page 289

Downloaded from www.Manualslib.com manuals search engine 292
INJECTION
CHECKS: TURBO PRESSURE
IMPERATIVE: Respect the safety and cleanliness requirements.
Preparation.
IMPERATIVE: Respect the following test conditions:
- Engine at operating temperature.
- Vehicle in running order.
- Engine under full load.
Connect the diagnostic tool to the vehicle's diagnostic socket, carry out parameter measures.
Mode of operation.
Start the engine.
Engage first gear, start the vehicle.
Engage the gears up to third gear.
Decelerate to an engine speed of 1000 rpm.
Check the pressure: 0,6 ± 0,05 bar
(1500 rpm).
Accelerate freely (change from fourth gear to third gear).Check the pressure: 0,9 ± 0,05 bar (between 2500and 3500rpm).
Engines: 9HZ - 9HY
XSARA PICASSO
Angl.-t2-page283-305-2005 9/01/06 10:18 Page 292

Downloaded from www.Manualslib.com manuals search engine 294
INJECTION
CHECKS: TURBO PRESSURE
Tools.
[1]Pressure gauge for checking boost pressure: 4073-T.A Kit 4073-T
[2]Sleeve for checking boost pressure: 4185-T
Checks.
IMPERATIVE: respect the following checking requirements: Engine at running temperature.
Vehicle running at full load.
Preparation.
Remove the collar (3)and the sleeve.
Insert the tool [2]between the pipe (1)and the duct (2).
Position 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.
Procedure.
Start the engine.
Engage first gearand start the engine.
Engage the gears up to third gear.
Decelerate to 2000 rpm.
Gradually accelerate.
Check the pressure: 0.95 ± 0.05 bar.
Remove the tools, refit the collars (3) and the sleeve.
B1BP1ZXD
Engine: RHY
XSARA PICASSO
Angl.-t2-page283-305-2005 9/01/06 10:18 Page 294

Downloaded from www.Manualslib.com manuals search engine 295
INJECTION
CHECKS: TURBO PRESSURE
Tools.
[1]Pressure gauge for checking boost pressure: 4073-T.A Kit 4073-T
[2] Sleeve for checking boost pressure: 4185-T
[3]Adaptor sleeve: 4229-T
Checks.
IMPERATIVE: respect the following checking requirements: Engine at running temperature.
Vehicle in running order at full load.
Preparation.
Remove the collar fixing (3).
Insert the tool [2]connected with tool [3], between the pipe (1)and the duct (2).
Position tool [1]in the vehicle.
Connect the sleeve [2]to the tool [1]with its tube «a».
Procedure.
Start the engine.
Engage first gear and start the engine.
Engage the gears up to third gear.
Decelerate to 1000 rpm.
Accelerate hard, and check the pressure: 0.6 ± 0.05 bar
(1500 rpm).
Accelerate freely in kick-down (changing from fourthto third gear).
Check the pressure: 0.95 ± 0.05 bar (between 2500and 3500rpm).
Remove the tools, reposition the pipe (1)and refit the collar (3).
B1HP12JD
Engine: RHZ
XSARA PICASSO
Angl.-t2-page283-305-2005 9/01/06 10:18 Page 295

Downloaded from www.Manualslib.com manuals search engine 301
INJECTION
CHECKING THE AIR SUPPLY CIRCUIT
Tool.
[1]Manual vacuum pump: FACOM DA 16
IMPERATIVE: Respect the safety and cleanliness requirements.
Vacuum pump.
Connect the tool [1]on the vacuum pump (1).
Start the engine.
Pressure should be 0.8 barat 780 rpm.
Boost pressure regulator electrovalve.
Connect the tool [1]between the electrovalve (2)and the valve (3)of the boost pressure regulator.
Compare readings with the values in the table below.
Engine speed (rpm) Pressure (bar)
780 0,6
4000 0,25
Pressure regulator valve.
Connect the tool [1]on the valve (3).
Appy a pressure of 0.5 barto activate the rod "a".
Rod "a"should move 12 mm.
B1HP12FD
Engines: RHY - RHZ
XSARA PICASSO
Angl.-t2-page283-305-2005 9/01/06 10:18 Page 301

Downloaded from www.Manualslib.com manuals search engine 303
INJECTION
CHECKS: EXHAUST GASES RECYCLING CIRCUIT
Exhaust gas recycling (EGR) valve.
(1)Exhaust gas recycling (EGR) electrovalve
NOTE:The engine ECU pilots the EGR valve.
Perform the check with the aid of a diagnostic tool.
Carry out the following operations with the diagnostic tool:
- «INJECTION»menu.
- Actuator tests.
- EGR electrovalve.
Check that you can hear the click from the EGR regulation electrovalve.
Double butterfly housing
(vehicle with particle filter).
(2)Double butterfly housing
Perform the check with the aid of a diagnostic tool.
Carry out the following operations with the diagnostic tool:
- «INJECTION»menu.
- Actuator tests.
- Butterfly.
EGR exchanger butterfly.
Check that you can hear the click from the double butterfly housing.
B1HP1UPC
B1HP1UQC
XSARA PICASSO
Engines: 9HZ - 9HY
Angl.-t2-page283-305-2005 9/01/06 10:18 Page 303

Downloaded from www.Manualslib.com manuals search engine 304
INJECTION
CHECKS: EXHAUST GASES RECYCLING CIRCUIT
Tool.
[1]Manual vacuum pump: FACOM DA 16
IMPERATIVE: Respect the safety and cleanliness requirements.
EGR valve.
Connect the tool [1]to the capsule union (1).
Apply, several times in succession, a vacuum of approx. 0.6 barto activate the rod "a".
In abrupt reaction to the vacuum, the valve should close on its seating with a clicking noise.
Exhaust gas reycling (EGR) electrovalve.
Check, not under load, between the electrovalve (2)and the EGR valve (1).
Connect the tool [1]between the electrovalve (2)and the capsule (1).
Compare readings with the values in the table below.
Engine speed (rpm) Vacuum value
780 0,5 bar
2500 0 bar
B1HP12GD
Engines: RHY - RHZ
XSARA PICASSO
Angl.-t2-page283-305-2005 9/01/06 10:18 Page 304

Downloaded from www.Manualslib.com manuals search engine 305
IGNITION
VehiclesEngine
BOSCH EYQUEM CHAMPION SAGEMElectrode gap Tightening
typesetting torque
1.4i 16V KFU VR8SE2,25 ± 0,2
1.6i 16V NFU3 ± 0,3
C4 2.0i 16V RFN RFN52HZ3A
2.0i RFJ REC9MCLX 2,7 ± 0,2
2.0i 16V RFK FR 7 ME
1.4i KFW FR 7 DE RFN 58 LZ RC 8 YLC 0,9 ± 0,05
XSARA 1.6i 16V NFU FR 7 ME RFN 58 HZ
2.0i 16V RFN FR 8 ME RFN 52 HZ REC 9 YCL 2,5 ± 0,2
1.6i90 hp
NFV RFN 58 LZ
XSARA100 hp FR 7 DE RC 8 YLC
PICASSO 1.8i 16V 6FZ
FR 8 ME RFN 52 HZ REC 9 YCL
2.0i 16V RFN
SPARKING PLUGS
Angl.-t2-page283-305-2005 9/01/06 10:18 Page 305

Downloaded from www.Manualslib.com manuals search engine 311
CLUTCH
GEARBOX
TRANSMISSION
CLUTCH SPECIFICATIONS
Engine type NFV 6FZ RFN 9HY 9HZ RHY
Gearbox type BE4/5
SupplierVALEO LUK
Mechanism/type200 DNG 3800 230 DNG 4700 215 DT 5250 225 DNG 5100 230 P 4700
Hub disc200X(D95)
230 DNG 4700 215 FD 95 228
11A12X
Ø of lining. ext/int200/137 228/155 215/147 225/150 230/155
Quality of liningF410 F 808 F 810 DS F408
TU5JP+ EW7J4 EW10J4 DV6TED4 DW10TD
XSARA PICASSO
Angl.-t2-page306-360-2005 9/01/06 10:20 Page 311