08 · Engine

Injector operation check

Make: Fiat
Model: Bravo Factory Service Manual
Year: 2007–2014
Section: Petrol injection system › Injector operation check

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EngineInjector operation check

Injector operation check

Check 1056BA

1.4 16v

STEP	CHECK TO BE PERFORMED	REMEDIAL ACTION IF THE CHECK IS NOT OK
1	Injection signal check Prepare the diagnostic equipment for a voltage graph assimilation. Select the "VOLTMETER" function from the "INSTRUMENT" menu with the time set at 1 second. Connect the probes between the pins of the injector that is not working. Press the START button on the diagnostic equipment to begin creating a graph. Let the engine be driven and check that the signal corresponds to the enclosed graph	Move on to Step 2
2	Injection wiring check Check the continuity of the wiring for the injection signals between the injectors and the engine control unit See E5030 PETROL ENGINES ELECTRONIC MANAGEMENT Move on to Step 3	Restore the correct wiring between the engine control unit and the injectors. Replace the engine management control unit Op. 1056B82 INJECTION/IGNITION SYSTEM E.C.U. (ONE) - R + R
3	Injector supply check Check that the injectors are correctly supplied See E5030 PETROL ENGINES ELECTRONIC MANAGEMENT Move on to Step 4	Restore the correct supply for the injectors
4	Injector resistance check Disconnect the injector connector Connect the Examiner in ohmmeter mode between the injector terminals and then check the resistance: the value should be 15 Ohm ±20% at 20°C	Replace the injector Op. 1056B70 INJECTOR (ONE) - R + R WITH FUEL MANIFOLD PIPE REMOVED - INCLUDES SEAL REPLACEMNT

Injection signal

1- Injector connector

1.4 16v TJet

STEP	CHECK TO BE PERFORMED	REMEDIAL ACTION IF THE CHECK IS NOT OK
1	Injection signal check Prepare the diagnostic equipment for a voltage graph assimilation. Select the "VOLTMETER" function from the "INSTRUMENT" menu with the time set at 1 second. Connect the probes between the pins of the injector that is not working (using disconnector AD 233 N° 1806387000). Press the START button on the diagnostic equipment to begin downloading a graph. Let the engine be driven and check that the signal corresponds to the enclosed graph	Renew the wiring between the engine management control unit and the injectors. If the signal is interrupted at the control unit output replace the engine management control unit Op. 1056B82 INJECTION/IGNITION SYSTEM E.C.U. (ONE) - R + R
2	Injector power supply check Check that the injectors are correctly supplied Move on to Step 3	Renew the 15A fuse F22 in the engine compartment junction unit after having identified the cause of the problem. Restore the correct power supply for the injectors
3	Injector resistance check Disconnect the injector connector Connect the Examiner in ohmmeter mode between the injector terminals and then check the resistance: the value should be 12 Ohm ± 10% at 20°C	Replace the injector Op. 1056B70 INJECTOR (ONE) - R + R WITH FUEL MANIFOLD PIPE REMOVED - INCLUDES SEAL REPLACEMNT

STEP

CHECK TO BE PERFORMED

REMEDIAL ACTION IF THE CHECK IS NOT OK

Injection signal check

Prepare the diagnostic equipment for a voltage graph assimilation. Select the "VOLTMETER" function from the "INSTRUMENT" menu with the time set at 1 second.

Connect the probes between the pins of the injector that is not working (using disconnector AD 233 N° 1806387000). Press the START button on the diagnostic equipment to begin downloading a graph. Let the engine be driven and check that the signal corresponds to the enclosed graph

Renew the wiring between the engine management control unit and the injectors. If the signal is interrupted at the control unit output replace the engine management control unit

Op. 1056B82 INJECTION/IGNITION SYSTEM E.C.U. (ONE) - R + R

Injector power supply check

Check that the injectors are correctly supplied

Move on to Step 3

Renew the 15A fuse F22 in the engine compartment junction unit after having identified the cause of the problem. Restore the correct power supply for the injectors

Injector resistance check

Disconnect the injector connector

Connect the Examiner in ohmmeter mode between the injector terminals and then check the resistance: the value should be 12 Ohm ± 10% at 20°C

Replace the injector

Op. 1056B70 INJECTOR (ONE) - R + R WITH FUEL MANIFOLD PIPE REMOVED - INCLUDES SEAL REPLACEMNT

Disconnector AD 233 connection

Injection signal

‹ Prev Introduction - petrol fuel injection system Next › Engine coolant temperature sensor operation check

Parts & tools for this job For 2007 Fiat Bravo

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