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 the CODE fault message is not present at the matrix that the inertia switch has not been operated	Continue to Step 1	CODE fault message present at the matrix	See table K108 DISPLAY FAULT CODE ON MATRIX
		Continue to Step 1	Operation of inertia switch	Restore correct operation
1	CHECKING WITH DIAGNOSTIC EQUIPMENT	All OK	Problems met	Operation
	Connect the diagnostic equipment (Examiner or other instruments) to the diagnostic socket Check: for errors in the control unit plausibility of all the parameters	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	ACTIVE TESTING OF FUEL PUMP	All OK	Problems met	Operation
	Carry out active testing of fuel pump and check if it is working properly	Continue to Step 4	Pump not working	Continue to Step 3
3	CHECK PETROL PUMP ELECTRICAL CIRCUIT	All OK	Problems met	Operation
	Check the petrol pump supply and earth See E5030 PETROL ENGINE ELECTRONIC MANAGEMENT	Continue to Step 4	Connections not correct	Restore the connections See E5030 PETROL ENGINE ELECTRONIC MANAGEMENT
		Continue to Step 4	Pump faulty	Replace petrol pump Op. 1040A70
4	DELIVERY PRESSURE CHECK	All OK	Problems met	Operation
	Check that the fuel pressure is correct Op. 0510C10	Continue to Step 5	Incorrect pressure: front pipes obstructed	Remove obstruction If necessary, replace the pipe
	Check that the fuel pressure is correct Op. 0510C10	Continue to Step 5	Incorrect pressure: faulty fuel pump assembly	Replace the pump assembly Op. 1040A70
5	CHECK ON CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present	End of diagnosis	Fault persists: control unit faulty	Replace engine management control unit Op. 1056B82