Citroen - Systeme D'Injection Hdi Bosch Edc 16 c3 Pour Moteur Dv4Td_en

INTERNATIONAL CENTER OF FORMATION TRADES

SYSTEM Of INJECTION HDIBOSCH EDC 16 C3

FOR ENGINE DV4TD

CITROEN CARS

S.A. with the capital of 16.000.000 €R.C.S. Paris 642.050.199

Registered office: Building Colisée III – 12, street Fructidor

75835 Paris Cedex 17 France

Tel.: 01.58.79.79.79 – www.citroen.fr

http://www.citroen.fr/

With

With

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®AUTOMOBILES CITROEN Any reproduction or m8me translation partial without the authorization ěcńte of CITROEN CARS is prohibited and constitutes a counterfeit

CITROEN

INTERNATIONAL CENTER OF FORMATION TRADES

AUTOMOBILE TECHNIQUE

61 street Arago 93585 Saint-Ouen cedex

Center of formation of: .

SYSTEM Of INJECTION HDI BOSCH EDC 16 C3FOR ENGINE DV4TD

ORGANIZER

Name:

DATES OF the

TRAINING COURSE

Of:

PARTICIPANTS

Index of the document: 01

SYSTEM Of INJECTION HDI BOSCH EDC 16 C3 FOR ENGINE DV4TD

CITROEN

B

SYNTHETIC CONTENTS OF THE BOOKLET

SYSTEM Of INJECTION HDI BOSCH EDC 16 C3FOR ENGINE DV4TD

The purpose of the present booklet is to define the composition and the functionality of a system of engine control diesel HDI BOSCH of the type EDC 16 C3 for engine DV4TD.

This device is composed of a numerical electronic computer which analyze information coming from various sensors, and consequently order at the convenient period the injectors. It also has charges of it the regulation of the pressure, the piloting of the electromagnetic sluice gate of recycling of exhaust fumes.

In this document will be approached the following

topics: - General information and presentation

of the system,

- Description and operation of the components of the various functions or the functions themselves.

- Descriptions of the phases of operation, -

the Councils of maintenance,

- The electric circuit,

- The diagnosis of the system.


© AUTOMOBILE CITROEN Any reproduction or translation even partial without the written authorization of CITROEN CARS is prohibited and constitutes a counterfeit

SYNOPSIS

CHAPTER 1:

I - SYNOPTIC ...............................................................................II - FILTER A CARBURIZING

III - FUEL HEATER (ELECTRIC) (1276)

IV - PUMP HIGH FUEL PRESSURE

V - SPILL VALVE ..........................................................................

VI - TRANSFER PUMP (PRÉ-ALIMENTATION)

VII - FUEL FLOW CONTROL UNIT

VIII - CRAWL Of INJECTION COMMON HIGH PRESSUREFUEL ....................................................................................

IX - INJECTORS DIESEL (1131, 1132, 1133, 1134)

X - CHARACTERISTIC OF THE DIESEL ORDERING OF THE INJECTORS

XI - FUEL COOLER .......................................................................

CHAPTER 3: FUNCTION

I -II -

III -

IV -

CHAPTER 4: FUNCTION: RECYCLING OF GASESOf EXHAUST .............................................................................................

I - SYNOPTIC ...........................................................................II - VACUUM PUMP ....................................................................

III - ELECTROMAGNETIC SLUICE GATE OF REGULATION OF RECYCLING(EGR) (1253) .......................................................................

IV - WINNOW RECYCLING OF

V - CATALYTIC POT ...................................................................



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SYNOPSIS

CHAPTER 5: FUNCTION: INJECTION .....................................................

I - DRIVING CALCULATOR ............................................................II - CALCULATOR Of INJECTION (1320)

III - BATTERY (BB00) ....................................................................

IV - SENSOR REFERENCE ROLLS (1115)

V - WATER TEMPERATURE SENSOR

VI - TEMPERATURE SENSOR CARBURIZING (1221)

VII - SENSOR ENGINE SPEED (1313)

VIII - SENSOR HIGH FUEL PRESSURE (1321) -

IX - CONTACTOR OF BRAKE (2100) - CHARACTERISTIC

X - CONTACTOR Of CLUTCH (7306) - CHARACTERISTIC

XII - CONTACTOR REDUNDANT FOOTBRAKE PEDAL (7308) -

CHAPTER 6:

I -II -

III -

IV -

CHAPTER 7: FUNCTION



E

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SYNOPSISCHAPTER 8: FUNCTION: NEED FOR COOLING FOR AIR-CONDITIONING (BRAC)

PAGE 63

I - SYNOPTIC .................................................................................... PAGE 63

II - LINEAR PRESSURE PICK-UP OF THE FLUIDCOOLING AGENT (8009) ........................................................... PAGE 65

III - ADDITIONAL HEATING ................................................................. PAGE 67CHAPTER 9: MAINTENANCE ........................................................................ PAGE 71

I - RECOMMENDATION CARBURIZING ................................................ PAGE 71

II - SECURITY INSTRUCTIONS ............................................................ PAGE 71

III - EXCHANGES OF PARTS – OPERATIONS TO CARRY OUT ................ PAGE 72

IV - PROCEDURES OF RETURN IN GUARANTEE .................................. PAGE 74CHAPTER 10: DIAGNOSIS ............................................................................ PAGE 75

I - TOOLS .......................................................................................... PAGE 75

II - FUNCTIONS OF THE TOOLS .......................................................... PAGE 76

III - SCREENS OF TOOLS LEXIA/PROXIA ............................................. PAGE 77

IV - MODE DEGRADED ...................................................................... PAGE 86

V - DEFECTS SENSORS ..................................................................... PAGE 88

VI - DEFECT FUNCTIONS ANNEX ........................................................ PAGE 92CHAPTER 11: ELECTRIC DIAGRAM ............................................................ PAGE 95



F

CITROEN



GENERAL INFORMATION: SYSTEM Of DIRECT

INJECTION HDI

Caution: All the values specified in this document are given as an indication. To refer to documentation corresponding to the vehicle

I - PREAMBLE

The development of the new range of engine DV4TD to license to associate a new powerful system of injection it.

This system makes it possible to take account of the requirements in term of depollution the standards EURO 3 and it future normalizes EURO 4, approval of control, economy andreliability.

WITH - POLLUTIONThe combustion of the fuel causes the emission of the following pollutants:

carbon dioxide (CO2),

carbon monoxide (CO),

unburnt hydrocarbons (HC),

nitrogen oxides (Nox),

carbon particles.The antipollution regulations become more strict and involve the following evolutions:

installation of a device of recycling of exhaust fumes (EGR) decreasing the nitrogen oxide rate (Nox),

reduction of the quantity of suffers in fuel (SO2).Improvement of the fuel with license the installation of catalysts of oxidation on the vehicles Diesel.The installation of a catalyst of oxidation causes the reduction of the following pollutants:


unburnt hydrocarbons (HC),

carbon particles.

Foot-note: EGR: recycling of exhaust fumes


1CITROEN Chapter 1


B - PRINCIPAL ARCHITECTURE OF ENGINE DV4TD

Characteristic:

4 cylinders 8 valves with camshaft at the head, pulled by notched belt,

an intake manifold integrated into covers cylinder head,

an exhaust manifold placed on the part before engine,

a catalyst of oxidation fixed directly on the exit of the turbocompressor,

a water pump pulled by the belt of distribution,

a duocentric oil pump,

direct injection overfed by turbocompressor without exchanger,

a device of recycling of exhaust fumes (EGR),

an electromagnetic sluice gate of regulation of recycling of exhaust

fumes,

a system low pressure in “depression”.

C - SYSTEM Of INJECTION BOSCH EDC 16 C3Characteristic of the system of injection Bosch EDC 16 C3:

new driving calculator 32 bits with “anti-tunning” strategy, storage internal more important, only one bench of injection for the 4 injectors,

management of the injection carburizing according to the engine torque,

fuel pressure in the common slope being able to reach 1350 bars,

petrol station ZP18 integrated into the pump high pressure (system low pressure in depression),

pump high pressure of the type CP3.2.



2CITROEN Chapter 1

CITROEN 3Chapter 1

REQUIREMENT: Taking into account the very high pressures reigning in the system high pressure containing hydrocarbon (1350 bars), to respect the instructions below.

D - SECURITY INSTRUCTIONS

Foot-note: The security instructions are detailed in a range appearing in the mechanical sorter of the vehicle concerned.

Prohibition to smoke in the vicinity immediate of the system high pressure at the time of intervention.

To avoid working near flame or of sparks. Turning

engine:

not to intervene on the system high pressure containing hydrocarbon,

to always remain out of reach possible fuel jet which can cause serious wounds,

not to approach the hand close to an escape on the system high pressure containing hydrocarbon,

after the shutdown, to wait 30 seconds before any intervention.

Foot-note: The latency is necessary to the return to the atmospheric pressure of the system high pressure containing hydrocarbon.





4CITROEN Chapter 1

FUNCTION: FOOD CONTAINING

HYDROCARBON

CITROEN 5Chapter 2

Caption:With - Circuit return containing hydrocarbon tankB - System low pressure carburizing (depression)

C - System high pressure carburizing

Nomenclature:

NUMBER OF PART IN

LOCATE DESIGNATION DIAGRAMSELECTRIC

1 to 4 Injectors diesel (electrohydraulic) 1131 - 1132 - 1133 - 1134

5 Temperature sensor containing hydrocarbon 1221

6 Pump fuel starting manual

7 Fuel cooler

8 Fuel tank

9 Fuel heater (electric) 1276

10 Screw of water purging

11 Filter fuel + water decanter in fuel

12 Pump high fuel pressure (CP3.2)

13 Crawl of injection common high pressurefuel

14 Sensor high fuel pressure 1321



CITROEN 6Chapter 2

II - FILTER A CONTAINING HYDROCARBON

WITH - ROLERole of the fuel filter

filtering of the fuel, decantation of water, reheating of the fuel.

Fuel heater (23) (electric). Screw of water purging (22).has - Entry carburizing (retainable connection)B - Exit carburizing (towards pump high fuel pressure) (retainable

connection)Filter fuel (11): periodicity of replacement every 60000 km, purge every 20000 km.

Foot-note: The fuel filter must be replaced in its entirety.The filter element can equip the following systems of injection: system of injection in depression: SIEMENS SID 802 system of injection in depression: BOSCH EDC 16 C3

Foot-note: Bowl of filtration equipped with a detector of presence of water in the fuel (4050) (country of great export).

Translucent pipe enters the filter to fuel and the pump high fuel pressure: presence of microbubbles: normal operation, presence of large bubbles: abnormal operation.



7CITROENChapter 2

III - FUEL HEATER (ELECTRIC) (1276)

WITH - ROLEThe fuel heater brings the fuel to its temperature of use.

- DESCRIPTIONThe fuel heater heats the fuel coming from the fuel tank.The fuel heater (23) is composed of resistances (integrated into the fuel filter).The fuel circulates around resistance.This course allows an optimal distribution of heat. The temperature control is ensured by thermostat.

C - ESTABLISHMENTEstablishment: integrated into the fuel filter.

IV - PUMP HIGH FUEL PRESSURE

WITH - ROLE OF THE PUMP HIGH FUEL PRESSURE

To provide the high fuel pressure. To supply the injectors diesel through the grout pipe system

common high pressure. The pump high fuel pressure is pulled by the belt of distribution.

Foot-note: The pump high fuel pressure is not a pump saddle jib crane and does not require a chock.The part high pressure of the pump is cast solid and includes/understands three elements with 120°



8CITROEN Chapter 2

Nomenclature:

LOCATE DESIGNATION

NUMBER OF PART INDIAGRAMSELECTRIC

6 Pump fuel starting manual

8 Fuel tank

15 Return carburizing injecting diesel towardscontaining hydrocarbon tank

16 Jet of discharge

17 Spill valve

18 Jet of flow

19 Transfer pump

20 Fuel flow control unit 1277 or 1208

21 Limiting device of pressure (integrated into the slopeof injection common high pressurefuel)24 Arrival of the fuel (low pressure)

25 Return carburizing towards containing hydrocarbon tank26 Exit carburizing high pressure

Characteristics: the jet of discharge allows the fast discharge of the grout pipe

system common high fuel pressure at the time of fast “lifting of foot”, the jet of flow limits the fuel arrival on the feed pump in the high

modes, circuit with fuel in depression: aspiration by transfer pump

integrated into the pump high fuel pressure.



CITROEN 9Chapter 2

C - PHASE OF OPERATIONThe driving calculator controls the fuel flow control unit in closed loop, via the sensor high fuel pressure.The driving calculator controls the volumetric governor by sending a flexible intensity of form RC0 (Cyclic Report/ratio of Opening).The driving calculator uses the fuel flow control unit to manage the fuel pressure in the grout pipe system common high fuel pressure.

If signal RCO is small, the fuel flow control unit lets pass a great quantity of fuel towards the pump high fuel pressure.

If signal RCO is large the fuel flow control unit a small quantity of fuel towards the pump high fuel pressure lets pass.

Foot-note: The fuel flow control unit is open when it is not ordered by the driving calculator.

V - SPILL VALVE

WITH - ROLEThe spill valve (17) allows:

the degasification of the pump high fuel pressure,

lubrication interns pump high fuel pressure,

regulation of the pressure at the entry of the volumetric governor.

Caution: No intervention is authorized on the spill valve.



10CITROEN Chapter 2

VI - TRANSFER PUMP (PRÉ-ALIMENTATION)

WITH - ROLERole of the transfer pump:

ensure the pumping of the fuel in the containing hydrocarbon tank,

supply the pump high fuel pressure, allows the lubrication and the cooling of the pump high fuel

pressure.

B - DESCRIPTIONThe transfer pump (pre-food) is a gears positive-displacement pump.The depression lies between 0,5 and 1 bar when the fuel returns in the transfer pump.The fuel pressure at exit of transfer pump towards the pump high fuel pressure varies according to the engine speed (between 4,5 and 6 bars).

Caution: No intervention is authorized on the pump high fuel pressure.

VII - FUEL FLOW CONTROL UNIT

WITH - ROLEThe fuel flow control unit (20) modifies the active mass fuel rate of flow of the transfer pump towards the pump high fuel pressure.The pump high fuel pressure, compresses the necessary quantity of fuel required by the driving calculator.The reduced fuel flow control unit:

the heating of the fuel,

consumption by the pump high fuel pressure.



11CITROEN Chapter 2

VIII - CRAWL Of INJECTION COMMON HIGH FUEL PRESSURE

12CITROEN Chapter 2

WITH - ROLERole of the grout pipe system common high fuel pressure: to store the quantity of fuel necessary to the engine whatever the

phase of use,

to deaden the pulsations created by the injections,

to connect the elements of the system high pressure.Elements connected to the grout pipe system common high fuel pressure:

supply line high fuel pressure,

supply lines of the injectors diesel, drain of the return carburizing towards

tank, sensor high fuel pressure.

14 - Sensor high fuel pressure27 - Return carburizing towards tank carburizing 28 - Arrival of the fuel high pressureFoot-note: The limiting device of pressure of the grout pipe system common high

fuel pressure makes it possible to limit the maximum pressure in the grout pipe system common high fuel pressure between 1400 and 1500 bars.

C - ESTABLISHMENTThe grout pipe system common placed between the pump high pressure and the injectors diesel is established on the back face of the driving block.



INJECTORS DIESEL (1131, 1132, 1133, 1134)

WITH - ROLEThe injectors diesel inject the fuel necessary to the operation of the engine.The direct fuel injection in the head of the pistons improves the output of the engine.The fuel can be injected into the following cases: préinjection, principal injection, postinjection (if severized depollution, currently it is not used).

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Chapter 2

IX -

F - Return tank to fuel29 - Electric connector30 - Wind of electromagnetic sluice gate of order 31 - Spring of electromagnetic sluice gate of order 32 - Nut33 - Switch electromagnetic sluice gate of order 34 - diesel Nose of injector 35 - diesel nozzle Needle 36 - Room of pressure 37 - diesel Spring of injector 38 - Piston of order 39 - Room of order 40 - Jet of food 41 - Jet of the containing hydrocarbon return circuit42 - Inlet connection high fuel pressure 43 - laminar Filter included in the connection (43)

Foot-note: The laminar filter does not require maintenance.



The quantity of fuel injected depends on the following parameters:

duration of the electric drive (calculator of injection),

speed of opening of the diesel injector,

hydraulic flow of the diesel injector (a number and bore),

fuel pressure in the grout pipe system common high pressurefuel.

Fuel pressures used in the system of direct injection HDIprohibit the direct electric drive of the injectors diesel.The diesel opening of the injectors is obtained by difference in pressure entersthe room of order (39) and the room of pressure (36).The diesel nozzle needle (35) is plated on its seat by the spring (37).The diesel nozzle needle (35) is surmounted by the piston of order (38) (the piston of order is free in its boring).The head of the piston of order emerges in the room of order (39).The room of order is in connection with the following circuits:

system high pressure carburizing through the jet (40),

return circuit to the tank carburizing by the jet (41).The room of order (39) is isolated from the return circuit of fuel by the needle of the electromagnetic sluice gate (33).The diesel nozzle needle (36 35) is plated on its seat by the spring (31).The fuel is distributed in an identical way between the rooms (39) and (36). The jet (41) is larger than the jet (40).The needle of the electromagnetic sluice gate rises as of the food of the reel of the electromagnetic sluice gate (magnetic field).Foot-note: Need for télécoder the class of the injectors in the diesel calculator

injection codes hexadecimal.



14CITROEN Chapter 2

J - Closed diesel injectorK - Diesel opening of injector

33 - Switch electromagnetic sluice gate of order 35 - diesel nozzle Needle 36 - Room of pressure 37 - diesel Spring of injector 38 - Piston of order 39 - Room of order 40 - Jet of food 41 - Jet of the containing hydrocarbon return circuit



1 - Closed diesel injector

The effort exerted by the high pressure is identical between the room of order (39) and the room of pressure (36).The piston of order is motionless (plate against the diesel nozzle needle).The increase in pressure in the grout pipe system common high fuel pressure supports the closing of the diesel injector.

2 - Principle of Opening of a diesel injectorThe calculator of injection supplies the electromagnetic sluice gate of order.Phase of operation as soon as the needle of the electromagnetic sluice gate (33) rises under the action of the electromagnetic sluice gate of order (magnetic field): a fuel east leakage creates through the jet (41),

the fuel entry by the jet (40) does not compensate for the leakage by the jet (41),

balance between the pressure of the rooms (39) and (36) is broken,

the pressure present in the room of pressure (36) raises the diesel nozzle needle,

the piston of order goes up,

the fuel is sent in the head of piston.Foot-note: The fuel injection lasts as much as the electromagnetic sluice gate

of the diesel injector is supplied.Foot-note: Maximum lifting of the needle of electromagnetic sluice gate of

order: 0,06 Misters.


16CITROEN Chapter 2


3 - Characteristics according to the duration of ordering of the electromagnetic

sluice gateOrder short duration:

the piston of order presents a certain inertia,

the needle of the diesel injector is slightly raised,

the quantity of fuel injected is weak,

the pressure of injection is lower than the pressure present in the grout pipe system high fuel pressure.

Order long duration:

the piston of order and the diesel nozzle needle are completely raised,

the quantity of fuel injected is large,

the pressure of injection is equal to the pressure present in the grout pipe system high fuel pressure.

4 - Principle of closing of a diesel injector

Phase of operation as soon as the calculator of injection cuts off the supply of the electromagnetic sluice gate of the diesel injector:

the spring (32) of the electromagnetic sluice gate plates the needle of the electromagnetic sluice gate (34) on its seat,

the jet (41) is sealed,

the fuel leakage towards the return circuit ceases,

the rise in pressure in the room of order (32) causes the closing of the diesel injector,

the balance of the pressures is restored between the rooms (39) and (36),

the diesel injector is ready for a new cycle.

17CITROEN Chapter 2



X - CHARACTERISTIC OF THE DIESEL ORDERING OF THE INJECTORS

WITH - GENERAL INFORMATIONThe diesel ordering of the injectors is carried out by the stage of ordering of the calculator of injection.

The diesel stage of order of the injectors makes it possible to obtain the following tensions:

a tension of 80 V at a peak necessary to the beginning of the diesel lifting of the injectors,

a tension of 50 V necessary to the maintenance of the diesel opening of the injectors.

The stage of order integrated into the calculator of injection comprises a condenser which stores energy necessary to the diesel ordering of the injectors.

Between each injection, the calculator of injection sends impulses on the reel of the injector not requested.

The impulses create a tension induced to charge the stage of order (condensing).

Caution: The stage of order cannot take care in the presence of one of anomaly on the feeder of a diesel injector.

An internal system of safety to the calculator makes it possible to disconnect the stage from order to the shutdown.

18CITROEN Chapter 2

REQUIREMENT: Taking into account the presence of tension raised at the boundaries of the calculator and injectors diesel, possible measurements of tension must be carried out with the recommended material.



B - ORDER ELECTROMAGNETIC SLUICE GATES OF THE INJECTORS DIESEL

Current of ordering of the diesel injector.Y - AmpsX - Duration

44 - Ringing current45 - Current of maintenance 46 - Phase of call 47 - Phase of maintenance 48 - End of orderThe power supply of an electromagnetic sluice gate breaks up into 2 phases:

phase of call (tension and ringing current),

phase of maintenance (tension and current of maintenance).

1 - Phase of call

The phase of call to for goal to cause a fast lifting of the needle of the electromagnetic sluice gate.The diesel electromagnetic sluice gate of injector is supplied in the following way:

a tension of approximately 80 V,

a current from approximately 20 A.

Foot-note: The phase of call is limited to a few milliseconds (0,3 ms). 2 -

Phase of maintenanceThe phase of maintenance makes it possible to continue to supply the electromagnetic sluice gate by limiting the absorptive electric output.The diesel electromagnetic sluice gate of injector is supplied in the following way:

a tension of approximately 50 V,

a current from approximately 12 A.Caution: It is interdict to supply a diesel injector in 12 V (destruction

of the electromagnetic sluice gate).


CITROEN19

Chapter 2


XI - FUEL COOLER

WITH - ROLEThe pump high pressure rolls the fuel what raises the temperature of the fuel.

The fuel cooler cooled the fuel at the time of the return to the tank. B -

DESCRIPTION

The fuel cooler consists of a metal serpentine which supports heat

exchange between the fuel and the air. C - ESTABLISHMENTThe fuel cooler is fixed under the body.



20CITROEN Chapter 2

FUNCTION: FOOD Of AIR

21CITROENChapter 3

22

CITROENChapter 3

Circulation of air (according to arrows): With - AirB - Exhaust fumes + air C - exhaust FumesNomenclature:

LOCATE DESIGNATION

NUMBER OF PART INDIAGRAMSELECTRIC

1 Calculator of injection 1320

2 Electromagnetic sluice gate of regulation of recycling (EGR)

1253

3 Vacuum pump

4 Winnow recycling of exhaust fumes(EGR)

5 Distributer of air inlet

6 Collector of exhaust fumes

7 Regulating valve of pressure ofoverfeeding: pressure control

8 Pneumatic capsule of order ofregulating valve (on turbocompressor):pressure control

9 Catalytic pot

10 Harness exhaust

11 Turbocompressor

12 Harness air inlet

13 Flowmeter of air + temperature sensor of air 1310

14 Air filter

15 Atmospheric pressure pick-up (integrated intocalculator of injection)

1320



II - FILTER A AIR

Periodicity of replacement: every 60000 km.

III - TURBOCOMPRESSOR DV4TD

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Chapter 3

8

7 - Regulating valve of pressure of overfeeding8 - Pneumatic capsule of regulating valve gear 10 - Turbine of exhaust16 - Arrival of oil under pressure (cooling 17 - Return oils

WITH - ROLEThe turbocompressor allows overfeeding in air of the engine.There is only one type of assembly: pressure of overfeeding controlled by the regulating valve only.



B - DESCRIPTION

24CITROEN Chapter 3

Caution: The representation of the turbocompressor is symbolic system but operation is identical.

7 - Regulating valve of pressure of overfeeding8 - Pneumatic capsule of regulating valve gear:

pressure control10 - Harness exhaust12 - Harness air inlethas - Towards distributer of admissionB - Gas coming from the exhaust manifold

The turbocompressor is composed of two distinct rooms. The turbocompressor is composed of the following elements:

a room related to the function exhaust of the engine,

a room related to the function admission,

a turbine and a compressor, made interdependent by a tree.



CITROEN 25Chapter 3

REQUIREMENT: It imperative, before turning off the engine to return on the diet of idle. Nonthe observation of this condition involves, in the term, the destruction of the turbocompressor (lack of lubrication).

The turbine, setting in motion by exhaust fumes, actuates the compressor which ensures the compression of the allowed air.

Foot-note: Greasing of the turbocompressor: very high speeds of the moving parts and the strong temperatures to be dissipated, require a very neat greasing.

Oil under pressure necessary to this function is taken on the oil circuit of the engine.

The pressure of overfeeding is controlled by the regulating valve. At rest the regulating valve is closed.The pressure of overfeeding is controlled starting from the pressure of air in the inlet manifold.

Phases of operation at the time of the going beyond of the value of taring of the pneumatic capsule (8):

the regulating valve of pressure of overfeeding opens,

the speed of the turbine of exhaust decreases,

the pressure of air of overfeeding decreases.The pressure decrease of overfeeding causes the closing of the regulating valve of pressure of overfeeding.



IV - FLOWMETER Of AIR (1310)

WITH - ROLEThe flowmeter of air measures the fresh air flow admitted by the engine. Role of the calculator of injection according to received information:

to determine the rate of recycling of exhaust fumes, to limit the formation of the fume during the transitional stages

(acceleration, deceleration) by correction of the containing hydrocarbon flow.

B - DESCRIPTION

CITROEN 26Chapter 3

16 - Electric connectorC - Protective grillD - Metal plate (hot film)E - Temperature sensor of air

The flowmeter of air is composed of the following elements:

metal plate (hot film),

temperature sensor of air.The metal plate is very fine and makes it possible to determine the mass of air entering the circuit of air.



The metal plate is composed of the following elements:

resistance of heating,

resistance of measurement (CTN).The calculator of injection feeds the resistance of heating in order to maintain the metal plate at a fixed temperature.

The air passing in the flowmeter cools the metal plate: the resistance of measurement (CTN) varies.The calculator associates the value of the resistance of measurement a flow air.

C - ELECTRIC CHARACTERISTICS Assignment of the ways of the connector:

1 sees: information temperature of air

sees 2: mass debimeter

sees 3:

sees 4: food debimeter (5Volts)

sees 5: information air flow

sees 6: mass

D - ESTABLISHMENTThe flowmeter of air is established between the air filter and the turbocompressor.


27CITROENChapter 3

REQUIREMENT: Not to touch with the metal plate, the use of a soufflette is proscribed.




28CITROEN Chapter 3

FUNCTION: RECYCLING OF GASES

Of EXHAUST


© AUTOMOBILE CITROEN Any reproduction or translation even partial without the written authorization of CITROEN CARS is prohibited and constitutes a

CITROEN 29Chapter 4

counterfeit

Circulation of air (according to arrows): With - AirB - Exhaust fumes + air C - exhaust FumesNomenclature:

LOCATE DESIGNATIONNUMBER OF PART INELECTRIC DIAGRAMS

1 Calculator of injection 1320

2 Electromagnetic sluice gate of regulation of recycling (EGR)

1253

3 Vacuum pump

4 Winnow recycling of exhaust fumes(EGR)

5 Distributer of air inlet

6 Collector of exhaust fumes

7 Regulating valve of pressure ofoverfeeding: pressure control

8 Pneumatic capsule of order ofregulating valve (on turbocompressor):pressure control

9 Catalytic pot

10 Harness exhaust

11 Turbocompressor

12 Harness air inlet

13 Flowmeter of air + temperature sensor of air 1310

14 Air filter

15 Atmospheric pressure pick-up (integrated intocalculator of injection)

1320



CITROEN 30Chapter 4

II - VACUUM PUMP

WITH - ROLEThe vacuum pump provides the depression necessary to the order of the following elements:

winnow recycling of exhaust fumes (EGR) (according to version), pneumatic capsule of ordering of the valve of recycling of exhaust

fumes,

• amplifier of braking.

B - DESCRIPTIONThe vacuum pump with pallets is pulled by the driving camshaft.

3 - Vacuum pump16 - Valve of safety (the valve is integrated into the connection of exit)A valve of safety integrated into the pump isolates the circuit from depression of the brakes, engine to the stop.The valve of safety makes it possible to preserve:

a reserve of vacuum in the amplifier of brake,

function recycling of exhaust fumes (regulation).

C - ESTABLISHMENTEstablishment: on cylinder head, in end of camshaft side gear box.



31CITROEN Chapter 4

III - ELECTROMAGNETIC SLUICE GATE OF REGULATION OF RECYCLING (EGR) (1253)

WITH - ROLETo order the opening of the valve of recycling of exhaust fumes (EGR).

B - DESCRIPTIONThe electromagnetic sluice gate puts in communication the vacuum pump and the capsule of the valve of recycling of exhaust fumes.

has

32CITROEN Chapter 4

17 - Electric connector has - Exit “use”B - Entry depression of the vacuum pump C - white MarkingD - Entry atmospheric pressure

The ordering of the electromagnetic sluice gate is of type RCO (cyclic report/ratio of opening).

The electromagnetic sluice gate proportional ordered in tension RCO is connected to the following elements:

atmospheric pressure,

depression provided by the vacuum pump.The pressure provided by the electromagnetic sluice gate lies between the atmospheric pressure and the depression of the vacuum pump.

C - ELECTRIC CHARACTERISTICSOrder: calculator of injection (mass). Order from variable tension (RCO):

full food (maximum RCO) = maximum depression, no food (minimum RCO) = not of depression (atmospheric pressure).Foot-note: RCO: Cyclic report/ratio of Opening.



IV - WINNOW RECYCLING OF EXHAUST FUMES (EGR)

WITH - ROLEThe valve of recycling of exhaust fumes controls the quantity of recycled exhaust fumes.

The device of recycling of exhaust fumes (EGR) makes it possible to decrease the quantity of nitrogen oxide (Nox) rejected by the exhaust.

The reduction in nitrogen oxides is carried out by reinjecting part of exhaust fumes in the cylinders.

The phases of recycling are memorized in cartographies of the calculator of injection.

4 - Winnow recycling of exhaust fumes (EGR)• - Entry depression (electromagnetic sluice gate of regulation of recycling of gases)F - Pneumatic capsule of ordering of the valve of recycling of gases

of exhaustCaution: The valve of recycling of gases is closed when it is not ordered

pneumatically (depression).Phases of operation when the pneumatic capsule of order is supplied with depression:

the valve of recycling of gases opens, part of exhaust fumes is absorbed by the engine (distributer of air

inlet).

C - ESTABLISHMENTThe valve of recycling is established on the exhaust manifold.



33CITROEN Chapter 4

V - CATALYTIC POT

The catalytic pot is equipped with a catalyst 2 ways.

The catalytic pot (had on the line exhaust) allows the reduction in rejection in the atmosphere of the following components:


unburnt hydrocarbons (HC).


34CITROEN Chapter 4


FUNCTION: INJECTION

I - DRIVING CALCULATOR



CITROEN 35Chapter 5

counterfeit

BODIES

BSI Intelligent case of constraint

0004 Compound

1115 Sensor reference

1150 Case of pre-heating

1160 Preheating plugs

1211 Measure with fuel

1220 Water engine temperature sensor

1221 Thermister gas oil

1253 Electromagnetic sluice gate EGR

1261 Sensor position pedals accelerating

1276 Electric gas oil heater

1277 Actuator of flow (IMV)

1310 Flowmeter air and temperature air

1313 Sensor of engine speed

1320 Driving calculator

1321 Sensor high pressure gas oil

1331 Injector rolls n°1




1620 Sensor speed conveys (vehicle

2100 Principal contactor of brake

2101 Contactor of redundant stop (vehicle

4050 Probe presence of

7306 Contactor pedal clutch

7308 Secondary contactor of brake

8009 Linear pressure pick-up of the cooling fluid


CITROEN 36Chapter 5


CONNECTIONS

N° OFCONNECTION

1 Information on the position of the

2 Information temperature of

3 Information on temperature gas oil

4 Information position pedals accelerating

5 Information on the quantity of

Information on the temperature of

6 Information on engine speed

7 Information fuel pressure.

8 Information speed conveys (vehicleABSor ESP)9 Information redundant footbrake pedal (vehiclewithESP)10 Information water presence in the fuel

11 Information pedals of

12 Information contact of secondary brake (availableonly with the

13 Information of pressure of the circuit of refrigeration

14 order case

15 Order preheating plugs

16 Order of actuator of flow

17 Order electromagnetic sluice gategasesof exhaust18 Order mass calculator to feed itcontaining hydrocarbon

19 Order of the 4 injectors diesel (PULSATES)

20 Information level of fuel

21 Information level of fuel

22 Information brakes

23 Ask lighting of the indicators compound

24 Information measures


CITROEN 37Chapter 5


II - CALCULATOR Of INJECTION (1320)

WITH - DESCRIPTION

38CITROEN Chapter 5

25 - Name of the system of injection (BOSCH EDC 16 C3) 26 - atmospheric Pressure sensor 27 - Date of coded manufacture28 - Material reference PSA29 - Software reference PSA

B - ROLEThe calculator manages the whole of the system of injection. The software of the calculator integrates the following functions:

functionalities of control of the injection and depollution,

strategies of approval of control,

the function antidémarrage (ADC2),

strategies of help,

the management of the ordering of the motoventilateurs and the

indicators of alarm (*),

the diagnosis with memorizing of the defects,

the function regulation speed (*).(*) according to version.



The calculator ensures the electric control of the following elements:

injectors diesel,

regulator high fuel pressure,

fuel flow control unit actuator (1208),

electromagnetic sluice gate of regulation of recycling (EGR) (1253),• case of pre-heating and postheating (cut postheating), the calculator delivers following information:

instantaneous consumption: towards intelligent case of constraint,

cut refrigeration.The atmospheric pressure pick-up is not dissociable calculator of injection.

The calculator comprises a stage of power able to provide the current of order very high necessary to the diesel operation of the injectors.

The actualization of the software of the calculator of injection is carried

out by remote loading (calculator equipped with a flash EPROM). C -

INJECTIONOn system EDC 16 C3 the driving calculator will determine the time of injection compared to the engine torque required and/or necessary.The driving calculator calculation the requirement in couple for the engine from:

the request driver,

the control of stability (ESP),

speed regulator,

operating mode (slowed down, full load…), couples punctured (compressing of air-conditioning, power-assisted

steering, electric consumer).The driving calculator carries out all calculations in engine torque and it is only at the time to control the injectors that the driving calculator transforms the engine torque into time of injection.



39CITROEN Chapter 5

• - ATMOSPHERIC PRESSURE PICK-UP (1320)The sensor measures the atmospheric pressure.Role of the calculator of injection according to received information:

to determine the density of the air,

to prohibit recycling in the event of rolling in altitude.

Foot-note: The density of the air decreases according to altitude.The atmospheric pressure pick-up (24) is integrated into the calculator of injection.

Caution: The atmospheric pressure pick-up is not dissociable calculator of injection.

- DESCRIPTION

Connector CME (32 ways gray). Connector CMI (48 ways chestnut). Connector CH (32 ways black).The calculator of injection is connected to the beam of injection by 3 modular connectors.Order of assembly of the connectors:

gray connector,

maroon connector,

black connector.



CITROEN 40Chapter 5

1 - Assignment of the ways of the connectorhas - Connector CME (32 ways gray)

CONNECTOR AND WAYS SIGNAL

A1

A2

A3

A4 Diagnosis relay the pre one/post heating

B1

B2 +APC

B3

B4

C1

C2

C3

C4

D1

D2

D3

D4

E1

E2 Exit: order relay of pre/post heating

E3

E4

F1 Mass sensor

F2

F3

F4

G1 Injector rolls 4

G2 Injector rolls 2

G3 Injector rolls 1

G4 Injector rolls 2

H1 Injector rolls 1

H2 Injector rolls 3

H3 Injector rolls 4

H4 Injector rolls 3



41CITROEN Chapter 5

B - Connector CMI (48 ways chestnut)CONNECTOR AND WAYS SIGNAL

A1 Mass sensor reference rollsA2A3A4B1 Entry: Signal sensor engine speedB2B3 Entry: Information speed conveysB4 Food pressure sensor gas oilC1 Mass sensor engine speedC2C3C4 Mass pressure sensor gas oilD1 Entry: Signal sensor reference rollsD2D3D4E1 Exit: Order principal relayE2 Mass flowmeter (Custom)E3E4F1F2 Entry: signal driving sensor temperature

waterF3 Food sensor engine speedF4 Food sensor reference rollsG1 Entry: signal flowmeter (Custom +)G2 Entry: Signal sensor temperature air

admissionG3 Entry: Signal pressure sensor gas oilG4H1 Mass driving sensor temperature waterH2 Entry: signal sensor temperature gas oilH3H4J1J2J3J4K1K2K3K4L1L2 Exit: Order electromagnetic sluice gate EGRL3L4M1M2 Exit: Order relay of powerM3M4 Exit: order governor volumetric (on

pump high pressure)



42CITROEN Chapter 5

C - Connector CH (32 ways black)

CONNECTOR AND WAYS SIGNAL

A1

A2

A3 Line dialogs: network EDGE H

A4 Line dialogs: network EDGE L

B1 Exit: order additional heating

B2 Order motoventilator group smallspeed (ground connection of the terminal)

B3

B4 Line diagnosis (line K)

C1 Exit orders additional heating

C2 Entry: sensor pedals accelerating (track n°2)

C3 +APC

C4 Diagnosis groups motoventilator

D1

D2

D3

D4 Exit: order motoventilator grouphigh speed (ground connection of the terminal)

E1

E2

E3 Entry: Signal contactor clutch

E4 Entry: information secondary footbrake pedal

F1

F2 Food sensor air-conditioning

F3

F4 Mass pressure pick-up of air-conditioning

G1

G2 Power supply of the sensor pedals accelerating

G3 Entry: sensor pedals accelerating (N°1 track)

G4 Mass

H1 Mass

H2 Entry: signal of the sensor of air-conditioning

H3 Mass sensor pedals accelerating

H4 Mass power



43CITROEN Chapter 5

III - BATTERY (BB00)

The level of load of the battery is important for the operation of the system of direct injection HDI.Caution: A tension battery lower than 7 V disturbs the operation of the

system of direct injection HDI.The calculator memorizes a defect in the following cases:

tension battery higher than 18 V, tension battery lower than 6,5 V.

IV - SENSOR REFERENCE ROLLS (1115)

WITH - ROLEThe sensor of reference rolls informs the calculator of injection of the point died high in compression of each cylinder.The calculator of injection needs this information to order the injectors diesel in sequential mode (cylinder by cylinder in order 1-3-4-2).

B - DESCRIPTION

44CITROEN Chapter 5

LOCATE DESIGNATION

30 Sensor reference rollsWith Not dead high cylinder N°2 (compression)

B Not dead high cylinder N°1 (compression)C Not dead high cylinder N°3 (compression)D Not dead high cylinder N°4 (compression)

has Target31 Pinion of distribution

C - ESTABLISHMENTThe sensor is of type with Hall effect, it is fixed compared to a target integrated into the pinion of distribution of camshaft.



V - WATER TEMPERATURE SENSOR ENGINE (1220)

WITH - ROLEThe water temperature sensor informs the calculator of the temperature ofliquid of driving cooling.Role of the calculator of injection according to received information:

to adjust the time of pre-heating,

to adjust the time of postheating,

to adjust the flow of starting,

to adjust the mode of idle,

to authorize the recycling of exhaust fumes (EGR),

to adjust the mass fuel rate of flow,

to limit the flow injected if the temperature of the liquid of cooling iscritical (function antiébullition),

to order the starting of the motoventilateurs,

to order the ratiometer with compound (*),

to order the indicators of alarm and préalerte (*).Foot-note: (*) according to version.


45CITROEN Chapter 5


B - DESCRIPTIONThe water engine temperature sensor consists of a resistance to negative temperature coefficient (CTN).

The more the temperature increases, plus its value of resistance decreases.TEMPERATURE

WATERENGINE IN °C

RESISTANCENOMINAL IN OHMS

MINI RESISTANCEIN OHMS

RESISTANCEMAXIMUM IN OHMS

60 1266 1244 1288

80 642 632 652

100 345 338 352

120 198 194 202

CITROEN 46Chapter 5

32 - Water engine temperature sensor.



VI - TEMPERATURE SENSOR CARBURIZING (1221)

WITH - ROLERole of the calculator of injection according to received information:

to adjust the mass fuel rate of flow,

to calculate the density of the fuel.

B - DESCRIPTIONThe temperature sensor carburizing (33) consists of a resistance to negative temperature coefficient (CTN).

More the temperature increases more its value of resistance decreases.TEMPERATURE

FUELRESISTANCE MINIMUM IN

OHMSMAXIMUM RESISTANCE

IN OHMS

- 40 79 000 109 535

- 30 41 255 55 557

- 20 22 394 29 426

0 7 351 9 248

20 2 743 3 323

40 1 141 1 339

60 522 595

80 259 287

100 138 150

120 78 84

130 0,60 0,64

C - ESTABLISHMENT



47CITROEN Chapter 5

VII - SENSOR ENGINE SPEED (1313)

Information engine speed on motorizations “FD” is provided by a new active sensor.

Specificities of the sensor of engine speed: establishment side distribution,

principle of operation for purpose of Hall,

• no adjustment or maintenance its

necessary. WITH - ROLE

The sensor makes it possible to determine:

the engine speed,

• the position of the mobile

attachment. B - DESCRIPTION

B

B - Magnetic targetE - Air-gap

34 - Sensor engine speed



CITROEN48

Chapter 5

counterfeit

C - OPERATIONThe target is made up 60 (58 + 2) even of magnetic poles distributed on the periphery whose two poles miss to locate the high dead point pistons 1 and 4.

Foot-note: By coupling two information sensor reference rolls and sensor engine speed the driving calculator determines the positon exact of each cylinder at the court of time.

The passage of the North Poles and southern of the target in front of the sensor modifies the output voltage of the sensor high state and low state.The frequency of the square signals produces by the passage of the poles of the target represents the number of revolutions of the engine.Attention at the following points:

to wash the hands before any handling of the pinion,

to avoid any shock and any deterioration of the magnetic track,

the use of the tools projecting is proscribed,

not to approach magnetic tools,

not to exert efforts on the reinforcement of the target.

D - ESTABLISHMENT

The sensor with Hall effect (34) is fixed compared to a target on the pump housing at oil.The ferromagnetic target is fixed on the pinion of crankshaft.



49CITROEN Chapter 5

The sensor provides a power proportional to the fuel pressure in the grout pipe system common high pressure (50 to 1500 bars).

B - ELECTRIC CHARACTERISTICS Assignment of the ways of the connector:

1 sees: mass

sees 2: information pressure (0 to 5 V)

sees 3: food + 5 V



IX - CONTACTOR OF BRAKE (2100) - CHARACTERISTIC

WITH - ROLEThe contactor allows the calculator injection to ensure a good approval of control.The electric information given by the contactor of brake is transmitted into telegraphic to the BSI, and is sent to the calculator of injection by the multiplexed network (*).(*) according to version.

• - ESTABLISHMENTThe contactor of brake is established on the pedals.

X - CONTACTOR Of CLUTCH (7306) - CHARACTERISTIC

WITH - ROLEThe contactor of clutch allows the calculator injection to ensure the operation of the involved idle.

• - ESTABLISHMENTThe contactor of clutch is established on the pedals.

XII - CONTACTOR REDUNDANT FOOTBRAKE PEDAL (7308) - CHARACTERISTIC

WITH - ROLEThe contactor allows the calculator injection to ensure a good approval of control.Information coming from the contactors of brake is constantly compared between them in order to detect a possible defect.

• - ESTABLISHMENTThe contactor of brake is established on the pedals.



51CITROEN Chapter 5



52CITROEN Chapter 5

FUNCTION: PRÉ-POSTCHAUFFAGE

Sees N° A4 of the connector 32 gray ways (CME). (diagnosis case of pre-heating).

Sees N° E2 of the connector 32 gray ways (CME).(order relay of the case prépostchauffage).

BODIES

BSI Intelligent

0004 Compound


1160 Preheating plugs


CONNECTIONS

N° OFCONNECTION

1 Ask lighting of the indicator of pre-heating

2 Ask lighting of the indicator of pre-heating



53CITROEN Chapter 6

II - PREHEATING PLUGS (1160)

WITH - ROLEThe preheating plugs allow a fast rise of the temperature in the combustion chambers during the launching phase.

B - DESCRIPTION

Preheating plugs 11 V.Overall length 118,5 Misters.Constitution of the preheating plugs:

a heating resistance,

a metal envelope of protection.



54CITROEN Chapter 6

III - CASE OF PRE-POSTCHAUFFAGE (1150)

WITH - ROLE

55CITROEN Chapter 6

The case electrically supplies the preheating plugs according to the

orders of the calculator of injection.B - DESCRIPTION

Times of pre-postheating are determined by the calculator of injection. In the event of failure of the case of pre-heating, the calculator of injection memorizes a defect.

C - ELECTRIC CHARACTERISTICS

Assignment of the ways of the connector:

N° 1 sees: mass,

N° 3 sees: +12 V after contact,

N° 4 sees: order relay of the case pre-postheating,

N° 5 sees: diagnosis case of pre-heating,

N° 8 sees: +12 V permanent,

N° 9 sees: power supply of the preheating plugs.

D - ESTABLISHMENT

LOCATE DESIGNATION

3 preheating Plug

4 electrical Loom


6 Cylinder head engine

IV - PRÉ-POSTCHAUFFAGETimes of pre-heating and postheating are determined by the driving calculator according to the temperature of the liquid of driving cooling of the mode of idle and altitude.

WITH - OPERATION OF PRE-HEATING

T°eauengine

Time ofpre-heating(in second)

Mode ofidle intr/min

Pre-heatingin secondAltitude1000m

Pre-heatingin secondAltitude1500m

Pre-heatingin secondsAltitude2000m

80°C 0 750 0 0 020°C 0 800 0,5 2 30°C 0,5 890 1 5 5

- 10°C 5 950 5,5 9,5 9,5- 20°C 5 1050 5,5 9,5 9,5- 25°C 10 1075 10,5 12,5 12,5- 30°C 15 1100 15 15 15

B - OPERATION OF POSTHEATINGPostheating makes it possible to prolong the operation of the preheating plugs after the launching phase.Postheating makes it possible to decrease the pollutant emissions in the first minutes following starting.Postheating cold reduces the emissions of fume blue and in altitude.

DRIVING T°EAU

TIME OFPRE-HEATING(IN SECOND)

MODE OFIDLE IN TR/MIN

POST HEATINGIN SECOND

80°C 0 750 020°C 0 800 00°C 0,5 890 180

- 10°C 5 950 180- 20°C 5 1050 180- 25°C 10 1075 180- 30°C 15 1100 180

Parameters being able to stop postheating:

water engine temperature higher than 65°C,

engine speed higher than 3500 rpm,

temperature of the air admission higher than 40°C,

mass fuel rate of flow injected higher than 35 Mg/CP (between 0 and 2500

tr/min), mass fuel rate of flow injected higher than 25 Mg/CP (engine speed

higher than 3000 tr/min),

tension battery lower than 7,5 V.



CITROEN 56Chapter 6

FUNCTION: DRIVING COOLING (MONEY)

Functions of the calculator of injection:

control starting and stop motoventilateurs (driving cooling), control postventilation (during 6 maximum minutes),

control lighting of the indicator of alarm temperature of water to compound,

control ratiometer of temperature of water to compound,

diagnosis of the operation of the motoventilateurs,

acquisition of the water engine temperature,

management of the degraded modes.



57CITROEN Chapter 7

I - SYNOPTIC

Caption:Simple arrow: telegraphic connection triple Arrow: multiplexed connection

Foot-note: This synoptic represents a configuration assembled on Xsara 2.

DESIGNATIONNUMBER OF PART IN

ELECTRIC DIAGRAMS

Intelligent case of constraint BSI

Compound 0004

Water engine temperature sensor 1220

Calculator of injection 1320

Relay food low speed 1508

Relay food high speed 1509

Group motoventilator 1510

Relay average food speed 1514

Linear pressure pick-up of the cooling fluid 8009

Compressor of refrigeration 8020

Calculator of refrigeration 8080



58CITROEN Chapter 7

CONNECTIONS

N° OFCONNECTION


2 Information on the pressure of the cooling fluid

3 Order relay low speed

4 Food of the motoventilator group in low speed

5 Food of the motoventilator group in high speed

6Food of the motoventilator group on averagespeed

7 Order relay average speed

8 Order compressor of refrigeration

9Spark controlwater engine

10

State management refrigeration

State of the compressor of refrigeration

Order AC \ ONE

Information temperature of

11 Ask refrigeration

14

Authorization ofrefrigeration

Ask flickering of the indicator ofof water engine


15Ask for authorization of interlocking of the compressorof refrigeration

16 Order relay high speed


CITROEN 59Chapter 7


II - WATER TEMPERATURE SENSOR ENGINE (1220)

The water temperature sensor informs the calculator of the temperature of the liquid of driving cooling.

The water temperature sensor is established on the water case.

CITROEN60

Chapter 7

TEMPERATURE MINI RESISTANCE RESISTANCE IN MAXIMUM RESISTANCENOMINAL WATER ENGINE IN °C IN OHMS OHMS

IN OHMS

60 1266 1244 1288 80.642.632 652.100.345 338 352

120 198 194 202

From the shutdown, the calculator orders the postventilation, if the water

temperature exceeds a certain threshold (*) (105°C).

(*) according to vehicle.

The postventilation is carried out into low speeds and hard to the maximum 6 minutes after the shutdown.



IV - DEGRADED MODE

CHARACTERIZATION OFDEFECT OF THE PROBETEMPERATURE WATER

ENGINETHRESHOLD OF

DETECTION

INFORMATION - STRATEGY OFHELP - VALUE OFREPLACEMENT

Short-circuit with the massLower tension sensorwith 2,2V

Lighting seeing driving diagnosis

Lighting of the alert indicatortemperature water engineOpen circuit or short-circuit Higher tension sensor

with the +BAT with 4,9VReduced flow mode (3000 trs)Cut recycling of gasesof exhaust (EGR)Cut or intedictionof interlocking of the compressorof air-conditioning (AC/OUT)Group motoventilator into largespeedValue of replacementtemperature of the fuel during1 minute after the starting ofengine then 100°C

Coherence of the rise intemperature

ENGINE FD

Alarm temperature of water engine

Duration of post-ventilation

Threshold of temperature to the interlocking of post-ventilation(low speed)

Temperature of interlocking the low speed ofmotoventilator

Temperature of interlocking the high speed ofmotoventilator


CITROEN 61Chapter 7


V - COOLANT CIRCUIT

7 - Surge tank.8 - Case of water entry. 9 - Unit heater.

10 - Case of water exit.11 - Radiator of cooling.



CITROEN62

Chapter 7

FUNCTION: NEED FOR COOLINGFOR AIR-CONDITIONING (BRAC)

63CITROEN Chapter 8

Caption:Simple arrow: telegraphic connection triple Arrow: multiplexed connection

Foot-note: this synoptic represents a configuration assembled on Xsara 2.

DESIGNATIONNUMBER OF PART IN

ELECTRIC DIAGRAMS

Intelligent case of constraint BSICompound 0004Water engine temperature sensor 1220Calculator of injection 1320Relay food low speed 1508Relay food high speed 1509Group motoventilator 1510Relay average food speed 1514Linear pressure pick-up of the cooling fluid 8009Compressor of refrigeration 8020Calculator of refrigeration 8080



CONNECTIONS

N° OFCONNECTION


2 Information on the pressure of the cooling fluid

3 Order relay low speed

4 Food of the motoventilator group in low speed

5 Food of the motoventilator group in high speed

6 Food of the motoventilator group on average speed

7 Order relay average speed

8 Order compressor of refrigeration

9Spark control of the indicator of alarm of temperaturewater engine

10

State management refrigeration

State of the compressor of refrigeration

Order AC \ ONE


11 Ask refrigeration

14

Authorization of interlocking of the compressor ofrefrigeration (AC \ OUT)

Ask flickering of the indicator ofof water engine


15Ask for authorization of interlocking of the compressorof refrigeration (AC \ TH)

16 Order relay high speed


CITROEN 64Chapter 8


II - LINEAR PRESSURE PICK-UP OF THE FLUID COOLING (8009)

65CITROEN Chapter 8

WITH - ROLEThe sensor measures the value of the pressure in the circuit refrigeration. Role of the calculator of injection according to received information: to authorize the starting of the motoventilator (cooling condenser of

air-conditioning),

• to authorize the interlocking of the compressor of air-conditioning. B -

DESCRIPTION

The sensor is of the piezoelectric type.The sensor is composed of strain gauges.The linear sensor provides a power proportional to the pressure of the circuit refrigeration.Identification: black connector.

Foot-note: The electric information given by the sensor is transmitted into telegraphic to the calculator of injection, and is sent to the intelligent case of constraint by the multiplexed network.

Value of pressureINTERLOCKING OF

MOTOVENTILATEUR CUT OF THE MOTOVENTILATEUR

Smallspeed

Averagespeed

Largespeed

Smallspeed

Pressure(bar) 10 16 22 7



C - ELECTRIC CHARACTERISTICS Assignment of the ways of the connector:

1 sees: food 5 V

sees 2: information pressure (0 to 5 V)

sees 3: massPower provided for a pressure of 1 bar: + 0,5 volt. Power provided for a pressure of 31 bars: + 4,5 V.

• - ESTABLISHMENTThe sensor is established on the condenser of air-conditioning.

- DEGRADED MODERole of the calculator of injection at the time of a failure of the pressure controller:

to prohibit the ordering of the compressor of refrigeration (AC/OUT),

• recording of a defect in the driving calculator.The motoventilator group is not functional any more for the needs forcooling associated with the refrigeration.



66CITROEN Chapter 8

III - ADDITIONAL HEATING

WITH - GENERAL INFORMATIONTaking into account the high output of the engine, it is necessary to assist the rise in temperature of the cockpit at the time of low temperatures.The assistance of rise in temperature of the cockpit is ordered by the case of constraint intelligent and controlled by the driving calculator.Two devices are used according to the countries of marketing.several immersion heaters (electric resistances) auxiliary established on the water circuit of the unit heaterA boiler (or burner) additional fed while carburizing is established in the passage of nose gear wheel left (vehicle cold large country)

Foot-note: On Xsara 2 equipped with injection BOSCH EDC 16 C3 the system of boiler is abandoned.

B - SYNOPTIC

Caption:

Simple arrow: telegraphic connection triple Arrow: multiplexed connection

BODIES

BCP3 Switching unit

1190 Heater driving circuit water




CITROEN67

Chapter 8

CONNECTIONS

N° OFCONNECTION

1 Order relay R1A (in BCP3) by ground connectionexit driving calculator (32 ways B1 black)

2 Power circuit for two resistancesadditional

3 Power circuit for two resistancesadditional

4 Order relay R2B (in BCP3) by ground connectionexit driving calculator (32 ways C1 black)

5 Ask additional heating

C - OPERATING CONDITION

CITROEN 68Chapter 8

Te

Your - Temperature of surrounding airTe - water engine Temperaturehas - Example 1 B - Example 2With - Zone of authorization of reheating B - Zone of prohibition of reheatingThe intelligent case of constraint (BSI) determines the need for additional heating to starting according to the temperature surrounding air and for the temperature water engine.Example 1:

Temperature water engine = 70°C,

Outside temperature = 10 °C, The conditions of temperatures are apart from the zone of starting:

there is no reheating.



Example 2:

Temperature water engine = 40°C,

Outside temperature = - 10°C, The conditions of temperatures are in the zone of starting of the

additional heating.

The BSI determines the need for heating of the cockpit to starting according to the temperature of surrounding air and of the water engine temperature.

The intelligent case of constraint orders the immersion heaters under the following conditions:

engine under operation since 60 seconds,

engine speed higher than 700 rpm,

tension battery higher than 12 V (positive load analysis),

water engine temperature higher than 40°C.The intelligent case of constraint orders the stages of reheating gradually:

first stage,

second stage.The end of ordering of the additional heating intervenes as soon as the conditions of temperature allow it (curve).



69CITROEN Chapter 8



70CITROEN Chapter 8

MAINTENANCE

71CITROEN Chapter 9

I - RECOMMENDATION CONTAINING HYDROCARBONCaution: The addition of products additivés such as cleaning

fuel/remétallisant system is prohibited.

II - SECURITY INSTRUCTIONS

WITH - PREAMBLEAll the interventions on the system of injection must be carried outin accordance with the following regulations and regulations: proper authorities as regards health, prevention of the accidents, environmental protection.Prohibition to smoke in the vicinity immediate of the system high pressure at the time of intervention.To avoid working near flame or of sparks. Turning engine: not to intervene on the system high pressure containing hydrocarbon, to always remain out of reach possible fuel jet which can cause

serious wounds, not to approach the hand close to an escape on the system high

pressure containing hydrocarbon.After the shutdown, to wait 30 seconds before any intervention.

Foot-note: The latency is necessary to the return to the atmospheric pressure of the system high pressure containing hydrocarbon.

Caution: The interventions must be carried out by specialized personnel informed of the security instructions and precautions to be taken.

Caution: It is interdict to intervene on the turning system high pressure containing hydrocarbon driving.

Caution: Before any demounting of the calculator of injection: to wait 30 seconds after the cut of the contact, and to disconnect the negative terminal of the battery.

Caution: It is interdict to disconnect a driving diesel injector turning (risk of deterioration of the engine).

Caution: Not to order a diesel injector, out of the cylinder head, if its body is not connected to the mass (electrostatic risk of discharge).

Caution: Not to force on the pins of the connectors, during the demounting of the calculator of injection.



III - EXCHANGES OF PARTS – OPERATIONS TO BE REALIZED

WITH - PRELIMINARY OPERATIONSBefore intervening on the circuit of injection, it can be necessary to carry out the cleaning of the connections of the following sensitive elements (see corresponding operations): filter fuel, pump high fuel pressure, crawl of injection common high fuel pressure, drains high fuel pressure, carry-injectors diesel.

B - EXCHANGES OF PARTS

Caution: Before any addition or replacement of parts, to make sure that the customer is in possession of his confidential chart.

C - PROHIBITED OPERATIONS Deposit-rests: sensor high fuel pressure on grout pipe system common high fuel

pressure, volumetric governor (1208) on pump high fuel pressure, temperature sensor carburizing on connection 4 ways.

ELEMENTSREPLACE

OPERATION TO BE CARRIED OUTOBSERVATION/INFORMATIONNECESSARY

Driving calculator

Appairage with the intelligent case of constraintTélécodage driving calculator

Télécoder hexadecimal numbers of eachdiesel injector with the corresponding cylinder

Code customerDescription ofthe equipment ofconveyNumber WINE

Diesel injector In the event of replacement of a diesel injector,télécoder 8 hexadecimal numbers ofeach diesel injector with the cylinder

Case ofconstraintintelligent

Appairage with the driving calculator Code customerNumber WINEAll keys

Case ofconstraint engine

Nothing Case of constraintspecific engineaccording to version



72CITROEN Chapter 9

REQUIREMENT: After disassembling, to immediately seal the connections of the sensitive elements with stoppers, to avoid the entry of impurities.

REQUIREMENT: To respect the tightening torques of safety of the elements of the below carburizing system high pressure, with a periodically controlled torque wrench.

D - TRAINING OF the CALCULATOR Of INJECTIONCaution: The exchange of a calculator of injection between two

vehicles, results in the impossiblity to start the vehicles.During the exchange of a calculator of injection, it is necessary to proceed to a training of the system antidémarrage.Conditions to respect to carry out a training of the system antidémarrage: to be in possession of the access code to the intelligent case of

constraint (registered on confidential chart customer),

to be in possession of a calculator of injection nine,

to use the tool for diagnosis, to carry out a procedure of training of the driving calculator:

“TRAINING DRIVING CALCULATOR”,

to proceed to the remote loading of the calculator of injection (if

necessary).

1 - Télécodage of the calculator of injectionThis procedure makes it possible to reduce the number of references of calculators.Parameters télécodables:

driving cooling (motoventilator group),

pressure pick-up of refrigeration,

speed conveys,

additional heating,

calculators.

2 - Remote loading of the calculator of injectionThe actualization of the software of the calculator of injection is carried out by remote loading (calculator equipped with a flash EPROM).

Foot-note: This operation is carried out by means of the tools for diagnosis.

73CITROEN Chapter 9



IV - PROCEDURES OF RETURN IN GUARANTEE

With - ELEMENTS OF the SYSTEM Of INJECTIONBefore return towards the center of expertise, the following elements must be sealed, placed in a bag plastic and conditioned in their packing of origin:

injectors diesel,

pump high fuel pressure,

crawl of injection common high fuel pressure,

sensor high fuel pressure,

filter fuel.

B - CALCULATOR Of INJECTIONThe disconnection of the calculator of injection involves its automatic locking.



74CITROEN Chapter 9

REQUIREMENT: In the event of return of part to the guarantee voucher, to turn over the calculator of injection with the access code.

DIAGNOSIS

STATION PROXIA: 4165 - T

STATION LEXIA: 4171 - T

75CITROEN Chapter 10

I - TOOLS



II - FUNCTIONS OF THE TOOLS

WITH - STATION PROXIA: 4165TThe tool allows:

identification of the calculator,

history,

reading of the codes defects,

the obliteration of the defects,

measurements of the variable parameters associated,

the test of the actuators,

the update of the calculator by remote loading,

consultation of the electric diagrams,

identification of the calculator.

B - STATION LEXIA: 4171TThe tool allows:

identification of the calculator,

history,

reading of the defects,

the obliteration of the defects,

measurements of the variable parameters associated,

the test of the actuators,

the update of the calculator by remote loading,

consultation of the electric diagrams,

identification of the calculator.





III - SCREENS OF TOOLS LEXIA/PROXIA

WITH - READER DEFECTS

DESCRIPTION OF THE DEFECT

Heading Type

Defect signal pressure air-conditioning Room

Defect authorization orders Room

not received air-conditioning

Defect signal pedals accelerating Room

Defect signal flowmeter Room

Defect circuit air inlet Room

Defect circuit additional heating Room1

Defect circuit additional heating Room2

Defect signal pedals accelerating 1 Room

Defect signal pedals accelerating 2 Room




Heading Type p-code

Defect interns calculator Room

P1118

P1117

Defect signal tension battery RoomP0563

P0562

Defect signal contactor brake Room P0571

Defect signal temperature waterengine Room

P0116

P0118

P0117

Defect signal contactorclutch

Room P0704

Defect signals temperature air Room P0111

Defect télécodage Room P1613

Defect orders electromagnetic sluice gateEGR

Room

P1410

P1409

P0403

Defect signal camshaft Room

P0342

P0343

P0341

P0344

Defect signal engine speed Room

P0337

P0338

P0336

P0339

Defect Function CoolingIntegrated into the Calculator

Room P0483

Defect orders high speedGMV

Room P0480


CITROEN 78Chapter 10



Heading Type

Defect orders low speed Room

GMV

Defect signal temperature gas oil Room

Defect circuit relay pre-heating Room

Defect calculator Room

Defect eeprom Room

Analogical defect converter - Roomdigital

Defect signal temperature airadmission

Room

Defect coded anti-starting Room

Defect orders injecting Room

Defect injecting circuit rolls 1 Room





Heading Type p-code

P0201

P0263

P0265

P0264

Defect injecting circuit rolls 2 Room P0202

P0266

P0268

P0267


P0269

P0271

P0270


P0272

P1209

Defect actuator of fillingpump high pressure gas oil

RoomP1210

P1208

P0230

Defect regulating circuit of

P0231

high pressure gas oil P0232

P0233

Defect regulating circuit ofhigh pressure gas oil

RoomP1200

P1201





Heading Type

Defect circuit relay of foodsystem of injection

Room

Defect communication EDGE Distant

Defect signal pressure gas oil Room

Defect food sensor pedalsaccelerator

Room

Defect food sensorsmode, pressure air-conditioning andcamshaft

Room

Defect food sensorpressure rail

Room

Defect food calculator in+après contact Room

Defect signal speed conveys

Room

Distant

Defect engine torque Room

Internal defect temperaturecalculator

Room

Defect engine stoppage Room




B - READER OF the PARAMETERS Values as an indicationIdling engine; Temperature engine with 80°C without consumption electric.

PARAMETERS UNITVALUE OF

REFERENCE DEFINITION OF THE PARAMETER

Engine speed Rpm 750 Mode of rotation of the engine ina number of revolutions per Synchronization tree

withcams/crankshaft

yes Detection of the signal coming fromsensor of reference rollsauthorizing driving startingFuel pressure

measuredBars 310-320 Fuel pressure measured

in the slope high pressure

Consign pressurefuel

Bars 310-320 Fuel pressure withto reach in the high slopepressure

Governor volumetric RCOfuel

% Rate of opening ofthe electromagnetic sluice gate of regulation offuel pressure inpump high fuel pressureFlow injected Mg/blow 4 Mass fuel rate of flow inthe injector

Correction flowinjector rolls X

Mg/blow Correction of the flow injected ofX°cylindre by the calculatorengineConsign flow gas oil Mm3: blow Mass fuel rate of flow to be reachedin the slope high pressureFlow measured air Mg/blow 200-220 Air flow measured forpiloting of valve EGR

Consign air flow Mg/blow 200-220 Air flow to be reached ininlet manifold forpiloting of valve EGR

RCO winnows EGR % 0 Rate of opening ofthe electromagnetic sluice gate of recycling ofexhaust fumesAdvance pre-injection ° 10 Moment of injectionpilot (1°injection) compared toPMH

Advance injectionprincipal

° - 2 Moment of injectionprincipal (2°injection) by report/ratiowith the PMHTemperature water

engine°C 80 Allowed water temperature by

the driving calculator following theminformation of the sensorTemperature containing

hydrocarbon°C 70 Temperature of the fuel of

return circuit of gas oil

Temperature airadmission

°C 25 Temperature air admission takenin the flowmeter of air






Atmospheric pressure Mbars 1013 Pressure of the ambient airmeasured by the internal sensorwith the calculatorTension battery Volt 12 to 14,7 Tension of the measured batteryby the driving calculatorTension +APC Volt 12 to 14,7 Tension of + crossed bycontact measured bydriving calculator of injection

Pre-post relayheating

Inactive State of the ordering of the relayof power supply of the candles ofAsk cut

air-conditioningNot State of prohibition by

calculator of the activation ofcompressor of air-conditioning

Pressure air-conditioning

Bar 5 Pressure of the cooling fluidacquired by the calculatorof injection engine

Relay GMV Not

Speed GMV 0 Mode of rotation ofmotoventilator (varies0%à100%)

Consign speed GMV 0 Mode of rotation ofmotoventilator requested bycalculator according towater temperature and ofair-conditioning

Flow injected measured Mg/blow 4 Mass fuel rate of flow of eachinjector at the time of a driving cycleConveyed speed Km/h 0 Speed acquired by the sensorgone up on the gear boxor by the network EDGE

Position pedalsof accelerator

% 0 Position measured by the sensoraccelerator pedalReport/ratio BV 0 Report/ratio of gear boxcalculated according to the modeengine and speed conveysPedal principal brake Slackened Information given bysensor of footbrake pedal (informationcoming from the BSI)Flow injected measured Mg/blow 4 Given mass fuel rate of flowby the time of injection andfuel pressure

Temperature calculator °C Temperature acquired bysensor interns with the calculator.A temperature higher than70°C prohibits the remote Clutch pedal Slackened Information given bysensor position pedalsof clutch (comfort ofcontrol)






State of the calculator -

Calculator notlocked

The operation of the engine isauthorized

Calculatorlocked

Impossibility of startingPossibility of carrying them outoperations of diagnosisfollowing:• Identification• Reading defect• Parameters measurements• Télécodage

State study The calculator is notboltable

State Afterwards

Sale

The calculator is delivered locked.To carry out the training ofcode calculator then oneappairage

State ofprogramming -

Programmed 1faith

The calculator is locked.To carry out newtraining of the codecalculator then a appairage

antidémarrage coded Programmed 2time

The calculator is locked.To carry out newtraining of the codecalculator then a appairage

Programmed 3time

Calculatorappairé

The calculator is locked.To make a training of the codeaccess of the BSIThe function antidémarrage codedis functional




C - LISTS OF THE TÉLÉCODAGESHEADING CHOICE TELECODAGE

Driving coolingGMV mono speed

GMV Bi or tri speed

Pressure sensorair-conditioning

No air-conditioning

Linear pressure sensor

Gear box Long manual box

Classify alternator Classify 15

Additional heatingNo additional heating

Candles ordered by the BSI

Configuration calculator

Without regulation speed, control of stability (ESP)

Without regulation speed, with control of stability (ESP)

With regulation speed, without control of stability (ESP)

With regulation speed, control of stability (ESP)

Configuration bodyDirection on the left

Direction on the right


During the replacement of a diesel injector (1) or of replacement of the driving calculator one needs télécoder the eight numbers hexadecimal (2) of each diesel injector for the corresponding cylinder, using the tool for diagnosis.



IV - DEGRADED MODE

WITH - VISUALIZATION OF THE DEFECTSThe appearance of certain defects in the system of injection results in the lighting of indicator to compound.

2 3

Lighting seeing driving diagnosis (2):

governor volumetric defect on pump high fuel pressure,

defect food (5 V) pedal accelerator,

defect food (5 V) sensor high fuel pressure,

defect sensor pedals accelerating,

defect sensor high fuel pressure,

defect driving sensor temperature water,

defect recycling of exhaust fumes, defect regulation pressure of the grout pipe system common high

fuel pressure,

defect injectors diesel,

defect relay of pre-postheating,

• defect télécodage driving

calculator. Driving indicator

temperature water (3):

the indicator ignites if the temperature water engine reached 118°C, the indicator dies out if the temperature water engine goes down in

lower part from 117°C,

the indicator flickers in the event of rupture of the powerline of the temperature sensor water engine,

defect groups motoventilator.




B - STRATEGY OF HELPTo the appearance of one or more defects the driving calculator passes in degraded mode and active of the strategies of help for stage to the defect.If the defect is important the driving calculator limits the engine speed to 3000 tr/min or with 1200 tr/min (limp home)Reduced mass fuel rate of flow:

this operating mode degraded limit mass fuel rate of flow,• the engine speed cannot exceed 3000 tr/minutes, Limp home: this operating mode degraded limit mass fuel rate of flow in the

event of serious problem,

the engine speed cannot exceed 1200 tr/min,

this mode makes it possible to join the point of service nearest.Foot-note: Certain defects cause the engine stoppage or prohibition to start the

thermal engine.Foot-note: When the temperature of the gas oil is higher than 90°/95°C the driving

calculator limits the quantity of fuel injected




V - DEFECTS SENSORS

CHARACTERIZATION OFDEFECT

THRESHOLD OF DETECTION

INFORMATION - STRATEGYHELP - VALUE OFREPLACEMENT

Absence of signal If the signal is erroneous beforesynchronization with the sensorengine speed the starting of

Erroneous signal

impossible.If the signal is erroneous in handof use the calculatorengine will order the stop ofengine.

B - SENSOR FLOWMETER Of AIR (1310)

CHARACTERIZATION OFDEFECT THRESHOLD OF

DETECTION


Important drift ofmeasure

Measure except cartography

Short-circuit with the mass Air flow lower than 9 kg/HAnd higher engine speedwith 150 tr/min

Cut of the recycling of gasesof exhaust according tomode and of the load engine

Short-circuit with + or circuitopened

Air flow higher than500 kg/H




Short-circuit with the mass Tension sensor lower than0,1 V

Value of replacement 50°C

Short-circuit with the +BAT Higher tension sensorto 4,75 V




CITROEN

D - SENSOR PEDALS ACCELERATING (1261)

CHARACTERIZATION THRESHOLD OF DETECTION


Detection pedalsblocked accelerator(coherence with pedal ofbrake)

Engine speed higher than1100 tr/minSpeed conveys higher than2,5 km/h% acceleration superior with20%support on brake higher than1seconde

Limp home (1200 tr/min)

Coherence of the N°1 way and2 ways of the sensor

Except beach carthography Sees weakestReduced flow (3000 tr/min)

N°1 short-circuit sees withmass

Tension sensor lower than0.9 V

The driving calculator takes incount the second track ofsensor pedalsFlow mode reduced to 3000 tr/min

N°1 short-circuit sees with+BAT or open circuit

Higher tension sensorto 4,75 V


N°2 short-circuit sees withmass

Tension sensor lower than0.9 V


N°1 short-circuit sees with+BAT or open circuit

Higher tension sensorto 4,75 V


Sees N°1 and 2 defective Limp home (1200 tr/min)

E - PRESSURE SENSOR OF AIR-CONDITIONING (8009)


DETECTION


Open circuit or short-circuitwith the mass

Tension sensor lower than0,2 V

Cut of the compressor ofair-conditioningValue of replacement100Kpa


Cut of the compressor ofair-conditioningValue of replacement100Kpa




CHARACTERIZATION OFDEFECT THRESHOLD OF DETECTION

INFORMATION - STRATEGY

Open circuit or short-circuit Tension sensor lower than Lighting of the indicator dignostic

with the mass 0,25 V engine

Short-circuit with the +BAT Higher tension sensor Reduced flow mode to 4,95 V

Cut engine

CHARACTERIZATION OFDEFECT THRESHOLD OF DETECTION

Absence of signal

Erroneous signal

Temporary absence ofsignal

Signal temporarilyerroneous

H - SENSOR TEMPERATURE INTERNS DRIVING CALCULATOR (1320)


DETECTION


Short-circuit with the mass Tension sensor lower than0,05 V







Open circuit or short-circuitwith the mass

Tension sensor lower than2,2 V

Value of replacement900 mbars

Short-circuit with +BAT Higher tension sensorto 4,75 V

Value of replacement900 mbars


J - CARBURIZING SENSOR TEMPERATURE (1221)


CHARACTERIZATION OF

Short-circuit with the

mass

THRESHOLD OF

DETECTION

CHARACTERIZATION OF

DEFECT

THRESHOLD OF

DETECTION

Strategy of help applied to the defective sensors


Tension sensor lower than 2,2 VValue of replacement 70°C

Short-circuit open or courtcircuit to the +BAT

Tension sensor higher than 4,75 V


K - DRIVING SENSOR TEMPERATURE WATER (1220)



INFORMATION - STRATEGYHELP - VALUE OF

Short-circuit with the mass Tension sensor lower thanREPLACEMENT

Lighting seeing diagnosis2,2 V engine

Open circuit or short-circuit Higher tension sensor Lighting of the alert indicatorwith the +BAT to 4,9 V temperature water engineCoherence of the rise intemperature

Reduced flow mode (3000 tr/min)Cut recycling of the gasof exhaust (EGR)Cut or intedictionof interlocking ofcompressor of air-conditioning(AC/OUT)Group motoventilator inhigh speedValue of replacementtemperature of the fuelduring 1 minute afterstarting of the engine then100°C


Tension food N°1 sensor pedals accelerating too low or too high

Tension higher than 5,3 V or tension lower than 4,7 V

Lighting seeing driving diagnosisLimp home

Tension food N°2 pressure sensor of air-conditioning, sensor engine speed, sensor camshaft

Tension higher than 5,3 V or tension lower than 4,7 V

Tension food N°3 pressure sensor of the grout pipe system common high fuel pressure

Tension higher than 5,3 V or tension lower than 4,7 VLighting of the driving indicator dignostic

Reduced flow mode (3000 tr/min) Cut engine Strategy of helpapplied to the defective sensors



VI - DEFECT ADDITIONAL FUNCTIONS

WITH - FUEL FLOW CONTROL UNIT (1208)




Short-circuit with the mass Reduced flow mode (3000 tr/min)Lighting of the indicator diagnosisengineCut enginePassage in regulation bucklesopened

Short-circuit with the +BAT

Open circuit

Coherence onelectric consumption

Passage in regulation bucklesopened


DETECTION


Short-circuit with the mass,short-circuit with the +BAT, circuitopened

C - DEFECT COMMUNICATION ON THE NETWORK EDGE


DETECTION


Dumb driving calculatorValue of replacement forthe impacted parameters EDGE

Absence of communicationwith the BSI


DETECTION


Absence of signal or signalincoherent

8 changes of report/ratiowithout modification of the signalpedal clutch

E - CONTACTOR SECONDARY OR REDUNDANT FOOTBRAKE PEDAL (7308)


DETECTION


Coherence between brakethe main thing and secondary

Strategy case of constraintintelligent

Brake not supported



CITROEN92

Chapter 10



Short-circuit with the mass Cut recycling of gasesof exhaust Short-circuit with +BAT

Open circuit



Flow air lower thanconsign

Flow air higher thanconsign

H - REGULATION PRESSURE OF the GROUT PIPE SYSTEM COMMON HIGH FUEL PRESSURE


Pressure lower thanconsign

Consign too highflow of filling ofpump high pressurefuel

Consign too lowflow of filling ofpump high pressurefuel


Derives of more than 350 barswhen the engine speed islower than 800 tr/minDerives of more than 200 barswhen the engine speed ishigher than 800 tr/minDerives from the pressure ofcrawl of common injection

high fuel pressurehigher than 150 bars andconsign flow offilling of the pumphigh fuel pressure

higher than an evaluated threshold

according to modeengine.Derives from the pressure of


Lighting of the indicator diagnosisengine

Reduced flow mode (3000 tr/min)

Reduction of the instruction of200 bars


Reduced flow mode (3000 tr/min)

Cut injection


Pressure of the slopeof high common injectionfuel pressurelower than the pressureminimal

Pressure maximum ofcrawl of common injectionhigh fuel pressureexceeded

Pressure of the slopeof high common injectionlower fuel pressurewith a threshold evaluated in functionengine speed (includingbetween 0 and 220 bars)Pressure of the slopeof high common injectionfuel pressurehigher than 1450 bars

Lighting of the indicator diagnosisengineReduced flow mode (3000 tr/min)Cut of the injection




I - GROUP MOTOVENTILATEUR




Coherence between speed ofgroup motoventilator andconsign

Lighting seeing alarmtemperature water engineCut of the compressor ofair-conditioning

Short-circuit with the mass orwith + of the relaise ofsmall or large orderspeedOpen circuit of the relayssmall or high speed




ELECTRIC DIAGRAM

I - GENERAL DIAGRAM




counterfeit



III - DIAGRAM Of ESTABLISHMENT




counterfeit

IV - NOMENCLATURE

BH28 -BB00 - BSI1 - PSF1 - C001 - CA00 - M000 - MC11 - MC13 -MC14 - MassesMC30 -MC31 - MC32 - MM01 -0004 - Compound1115 - Sensor reference rolls1208 - Volumetric governor1220 - Driving sensor temperature water1221 - Thermister gas oil1253 - Electromagnetic sluice gate all or nothing EGR1261 - Sensor position pedals accelerating1276 - Heater gas oil1310 - Flowmeter air1313 - Sensor engine speed1320 - Calculator engine control1321 - Sensor of high fuel pressure1331 - Injector rolls n° 11332 - Injector rolls n° 21333 - Injector rolls n° 31334 - Injector rolls n° 41620 - Velocity pick-up (*) vehicle7306 - Driver safety RVV (clutch)11 -- - Function lighting pre-heating15 -- - Function cooling43 -- - Function information containing hydrocarbon65 -- - Function air-bag72 -- - Function computer of edge73 -- - Function RVV80 -- - Function air-conditioning refrigeration

(*) According to version


Case of fuse cockpitBatteryIntelligent case of constraintPlatinize fusible constraint box (case constraint engine) Connector diagnosisContactor theft protection device



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