B10 ENGINE DOES NOT START / UNDER NO CIRCUMSTANCES - Alfa - 156 - eLearn

3233003 - B10 ENGINE DOES NOT START / UNDER NO CIRCUMSTANCES

The engine does not start. When the key is turned, the instruments light up, the starter motor turns to the Avv position, but the engine will not start.

The MIL warning light should come on with the ignition on and go out once the engine has started;If there is a fault in the reconfigurable matrix the CODE failure message comes on.

0	PRELIMINARY CHECKS	All OK	Problems met	Operation
		Results of the tests
	Check, in order: that there is no CODE system failure that the inertia switch has not been operated Exhaust system not obstructed the condition of the spark plugs Quality of the fuel	Continue to Step 1	CODE failure present	Continue as instructed in Table K52
			Operation of inertia switch	Restore correct operation
			Exhaust blocked	Renew the exhaust system
			Spark plugs worn / damaged	Replace the spark plugs
			Impurities in the fuel	Clean the tank
1	CHECKING WITH DIAGNOSTIC EQUIPMENT	All OK	Problems met	Operation
	Connect the diagnostic equipment (Examiner or other instruments) to the diagnostic socket and check the engine management control unit: for errors in the control unit plausibility of the parameters, in particular (by starting): engine rpm and timing rail pressure - rail pressure setting engine temperature	Continue to Step 2	An error is detected in the control unit	Continue according to the instructions for the diagnostic equipment
		Continue to Step 2	unreliable parameters	Continue as instructed by the diagnostic equipment and analyze the factors that could cause these inconsistencies
2	LOW PRESSURE CIRCUIT CHECK	All OK	Problems met	Operation
	Carry out the active diagnosis of the fuel pump and check the operating pressure and the max. pressure	Continue to Step 3	Pressure not correct	Check that the fuel pump is correctly supplied, that there are no blockages in the exhaust pipe and, if necessary, replace the petrol pump
3	IGNITION OPERATION CHECK	All OK	Problems met	Operation
	Check the continuity/insulation of the supply circuit and the coil operation; in particular, make sure that the coil operating signal is present See E5030 PETROL ENGINE ELECTRONIC MANAGEMENT	Continue to Step 4	No supply/earth	Renew the wiring See E5030 PETROL ENGINE ELECTRONIC MANAGEMENT
		Continue to Step 4	No operating signal	Check the wiring between the coils and the ECU and, if necessary, replace the control unit See E5030 PETROL ENGINE ELECTRONIC MANAGEMENT
4	INJECTOR OPERATING SIGNAL CHECK	All OK	Problems met	Operation
	Check the continuity/insulation of the injector wiring; in particular, make sure that the injector operating signal is present See E5030 PETROL ENGINE ELECTRONIC MANAGEMENT	Continue to Step 5	No signal, wiring broken	Renew the wiring See E5030 PETROL ENGINE ELECTRONIC MANAGEMENT
		Continue to Step 5	No signal, wiring not broken	Replace engine management control unit
5	ENGINE TIMING CHECK	All OK	Problems met	Operation
	Check that the timing is correct	Continue to Step 6	Timing not correct	Carry out the valve gear timing
6	CHECK ON CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present	End of diagnosis