Fiat BRAVO 1.9 JTD 8v – PARTICLE FILTER SYSTEM – – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION

WIRING DIAGRAM - PARTICLE FILTER SYSTEM - Fiat BRAVO 1.9 JTD 8v

PARTICLE FILTER SYSTEM - WIRING DIAGRAM Fiat BRAVO 1.9 JTD 8v

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COMPONENTS - PARTICLE FILTER SYSTEM - Fiat BRAVO 1.9 JTD 8v

Component code	Description	Reference to the operation
B001	JUNCTION UNIT
B002	JUNCTION UNIT UNDER DASHBOARD
B099	MAXI FUSE BOX ON BATTERY	-
C038	EARTH ON CENTRE TUNNEL	-
D001	FRONT/DASHBOARD COUPLING	-
E050	INSTRUMENT PANEL
H001	IGNITION SWITCH
K187	FAP DIFFERENTIAL PRESSURE SENSOR
K189	UPSTREAM PARTICULATE FILTER TEMPERATURE SENSOR (DPF)
K190	DOWNSTREAM PARTICULATE FILTER TEMPERATURE SENSOR (DPF)
M001	BODY COMPUTER
M010	ENGINE MANAGEMENT ECU

COMPONENT LOCATION - PARTICLE FILTER SYSTEM - Fiat BRAVO 1.9 JTD 8v

PARTICLE FILTER SYSTEM - COMPONENT LOCATION Fiat BRAVO 1.9 JTD 8v

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Component code	Description	Reference to the operation
B001	JUNCTION UNIT
B002	JUNCTION UNIT UNDER DASHBOARD
B099	MAXI FUSE BOX ON BATTERY	-
C038	EARTH ON CENTRE TUNNEL	-
D001	FRONT/DASHBOARD COUPLING	-
E050	INSTRUMENT PANEL
H001	IGNITION SWITCH
K187	FAP DIFFERENTIAL PRESSURE SENSOR
K189	UPSTREAM PARTICULATE FILTER TEMPERATURE SENSOR (DPF)
K190	DOWNSTREAM PARTICULATE FILTER TEMPERATURE SENSOR (DPF)
M001	BODY COMPUTER
M010	ENGINE MANAGEMENT ECU

DESCRIPTION - PARTICLE FILTER SYSTEM - Fiat BRAVO 1.9 JTD 8v

An electronic control system supervises and governs all engine parameters to optimise performance and fuel consumption by means of a real-time response to different operation conditions.To conform with the most recent pollution control regulations (EURO 4), the most recent version of electronic management which includes new components and a swirl solenoid valve and DPF particle filter has been adopted.The DPF particle filter (Diesel Particulate Filter) is a mechanical filter, inserted in the exhaust pipes which traps the carbon particles present in the exhaust gases on diesel engines. The filter makes it possible to almost totally eliminate the emission of carbon particles in line with current legislation.During the normal usage of the vehicle, the engine management control unit records a series of data related to usage (period of usage, type of journey, temperatures reached, etc.) and empirically calculates the quantity of particulates accumulated in the filter.The filter is an accumulation system and should be periodically regenerated (cleaned) by burning the carbon particles.This regeneration is carried out automatically by the engine management control unit on the basis of information provided by the sensors and if the following usage conditions are satisfied: vehicle speed above 40 Km/h for at least 15 minutes and particle mass below 200%.767The following phenomena may occur during the regeneration: limited increase in the idle speed, activation of the fan, limited increase in fumes, high exhaust temperatures. These situations should not be interpreted as faults and do not have an adverse effect on the behaviour of the vehicle or the environment.The system has three warning lights in the instrument panel for signalling the accumulation status and operation of the filter.The "filter blocked" signal is activated after a certain number of unsuccessful regenerations, i.e. the driving profile at that moment does not allow the automatic activation of the regeneration procedure.The EOBD warning light is activated if the accumulation level of 250% is exceeded memorizing the errors in the control unit memory.If the "filter blocked" warning light does not go out, or the EOBD warning light is activated, it is vital to carry out the forced regeneration using the diagnostic equipment (Examiner).It is possible, during the filter regeneration stage, that the particulate being "washed" may pollute the engine oil.For this reason, the "minimum engine oil pressure" warning light is also used on engines with a DPF filter that flashes together with the message "Change the engine oil" in the display when the system detects that the engine oil has deteriorated to a certain extent, requesting an oil change in advance of the programmed one (managed by the control panel - Service function).The extent of the deterioration of the oil is not measured by a dedicated sensor, but calculated by an algorithm in the engine management control unit depending on: the number of DPF regenerations, kilometres travelled (mileage), number of engine starting cycles, number of cold starts, average value of the oil temperature, etc.Three specific sensors inform the control unit about the operation of the particle filter:- The differential pressure sensor constantly measures the difference in pressure between the inlet and outlet of the particle filter: this measurement makes it possible to determine the filter blockage level.- The temperature sensor downstream of the catalyzer, located between the catalyzer and the particle filter, allows the engine management control unit to monitor the temperature of the exhaust gases downstream of the catalyzer and consequently an increase in temperature caused by catalytic combustion.- The particle filter temperature sensor - located on the particle filter itself - allows the engine management control unit to monitor the temperature of the exhaust gases in the filter.For more detailsThe system is also controlled by dedicated relays in the engine compartment control unit. Lines supplying the control unit and various system components (sensors and actuators) are protected by dedicated fuses that are also located inside the engine compartment.

FUNCTIONAL DESCRIPTION - PARTICLE FILTER SYSTEM - Fiat BRAVO 1.9 JTD 8v

Engine management control unit M10 controls and governs the entire electronic ignition and injection system.Main injection relay T9 of B1 controls the entire system: this is protected by a line protected by fuse F18 of engine compartment junction unit B1 and is energized by a control signal (earth) from pin 72 of connector A of control unit M10 and thus sends a power supply:- to pin 1 of connector A of the control unit, via the line of fuse F17 of B1 ;- to pin 5 of connector A of the control unit, via the line for fuse F22 of B1;The engine management control unit M10 receives signals from the different sensors thereby keeping all the engine operating parameters in check, in particular there are three specific sensors for the management of the operation of the particle filter.The FAP differential pressure sensor K187 receives a power supply from the control unit M10 from pin 44 of connector A and a reference earth from pin 37 of connector A and sends a signal proportional to the pressure to pin 36 of connector A of M10.The downstream catalyzer temperature sensor K189 receives a reference earth from pin 35 of connector A of the control unit M10 and supplies a signal proportional to the temperature measured at pin 34 of connector A of control unit M10.The downstream catalyzer temperature sensor K190 receives a reference earth from pin 33 of connector A of the control unit M10 and supplies a signal proportional to the temperature measured at pin 32 of connector A of control unit M10.The control unit is then connected via the CAN to the Body Computer M1 and to the instrument panel E50 thereby controlling the switching on of the filter blocked warning light and the displays in the panel.The control unit M10 is connected directly to the instrument panel E50 through a signal that comes out of pin 71 of connector A of M10 that is connected to the EOBD warning light.The autodiagnostic data can be read by connecting to connector C of the Body Computer M1 - pin 7: it receives signals from pin 25 of connector A of control unit M10 via the special diagnostic line, through which the command for the forced regeneration using the diagnostic equipment (Examiner) also "passes".