Fiat Brava Bravo 1.6 Automotive Diagnostic Solutions

The system is fully supported by serial communication from a number of manufactures with access to serial data and Dtc s The ECM is easily located by the side of the battery 55 pin.

To evaluate the injectors fully I suggest the following options 1 Oscilloscope 2 Inductive current clamp 3 Digital multi meter 4 Code reader 5 Exhaust gas analyser My choice would be the oscilloscope and the inductive current clamp Measuring the voltage path and the current during the opening period ensures complete knowledge of the circuit and how the injector is responding First measurement is the injector pulse time which should be 3 2 m s with a hot engine Next look at the inductive spike at the close of the injector this is critical and should peak at 57 64 volts You are going to have to use a good scope to clip it accurately I have given you enough clues in this direction Current flow is the most conclusive evidence 1 amp only please.

Using the DMM carefully note the resistance this will vary with temperature, at ambient temperature expect 14.5-15 ohms be critical (if you are looking for flexibility go to the gym). Faulty injectors usually have a lower ohmic value. The next option is serial interrogation but this method does not stand a cat in hell chance of premature or intransient injector error. I do not subscribe to changing all injectors only replacing faulty items after careful evaluation ensuring a durable repair...Access to the injector loom is ideal for all the above options without removal. Final choice of evaluation using a gas analyser my choice would be the Crypton 290. Although only a 4 gas unit offering no nox measurement it has a far superior filtration system and the sample pumping rate is twice that of the 295 five gas unit the gas bench is a superior andross unit utilising a mechanical chopper. Using the gas bench to assist in injector evaluation may not be that straightforward. Assuming the following normal figures.

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Fiat Brava Bravo 1.6 Schematic

Montare il miscelatore sul corpo farfallato Sonda Lambda a 4 fili Segnale sul filo nero Settare l emulazione del L E S su monoiniettore Bosch Segnale T P S sul filo n C arancio bianco Il filo della spia si trova in centralina sul Pin 9 Con LES 95 non collegare i fili gialli.

Fissare la massa del L E S sul polo negativo della batteria Scollegare la batteria prima di effettuare qualsiasi operazione Saldare le connessioni elettriche Non utilizzare rubacorrente MATERIALE CONSIGLIATO Set tubazioni e raccorderie Serbatoio G P L lt 54 supporto per Fiat Tipo NOTES Fix the mixer to the throttle body 4 wires Oxigen sensor Signal is on the black wire Switch LES emulation to Bosch single point position T P S signal is on wire C orange white Check engine lamp wire is on PIN 9 in the ECU With LES 95 do not connect yellow wires Connect L E S ground to the battery negative pole Disconnect the battery before working Soft solder wiring connections.

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Fiat Brava Bravo 1.4 12V Schematic

Separate the throttle body and insert the mixer in the middle 4 wires Oxigen sensor Signal is on the black wire Switch LES emulation to Bosch singlepoint position T P S signal is on wire 4 Connect L E S ground to the battery negative pole Disconnect the battery before working Soft solder wiring connections Do not use fast connections OTHER SUGGESTED MATERIAL Pipes and fitting set 54 lt LPG tank tank fixing bracketts for Fiat Tipo NOTES Separer le groupe du monoinjecteur en y installant le melangeur au milieu Sonde lambda 4 fils Signal sur fil noir Positionner le micro switch du L E S sur la position monoinjection Bosch Signal TPS sur fil n 4 Fixer la masse du LES sur le p le negatif de la batterie D connecter la batterie avant d effectuer n importe quelle operation Souder les connections electriques Ne pas utiliser de connections rapides MATERIEL CONSEILLE Kit tuyaux et raccords R servoir G P L lt 54 support pour Fiat Tipo NOTAS Dividir el cuerpo del monoinycettor e instalar el mezclador en el medio Sonda Lambda con 4 cables se al en el cable negro Programar la simulaci n del Les en posici n monoinyector Bosch Se al T P S en el cable n 4 Fijar la masa del LES en el polo negativo de la bateria Desconectar la bater a antes de efectuar cualquier operaci n Soldar las conecciones el ctricas No utilizar conecciones r pidas MATERIAL ADICIONAL ACONSEJADO Set ca er as y racores Tanque G L P lt 54 soporte para Fiat Tipo Landi S r l si riserva di modificare la presente scheda senza alcun preavviso al fine di migliorare il funzionamento della vettura Landi S r l reserves the right to modify this specification sheet without previous notice in order to improve the vehicle performances.

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