Engine does not start / under no circumstances

Make: Fiat
Model: Stilo Factory Service Manual
Year: 2001–2007
Section: Starting › Engine does not start / under no circumstances

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Fault diagnosisEngine does not start / under no circumstances

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 panel the CODE system failure will be present.

0	PRELIMINARY CHECKS	All OK	Problems met	Operation
		Results of the tests
1.2 16v 1.6 16v 1.8 16v 2.4 20v	Check, in order: that there is no CODE system failure that the inertia switch has not been operated	Continue to Step 1	CODE failure present	Continue according to the instructions for the See table K52 CODE FAILURE WARNING LIGHT ON
1.2 16v 1.6 16v 1.8 16v 2.4 20v		Continue to Step 1	CODE failure present	Restore correct operation
1	CHECKING WITH DIAGNOSTIC EQUIPMENT	All OK	Problems met	Operation
1.2 16v 1.6 16v 1.8 16v 2.4 20v	Connect the diagnostic equipment (Examiner or other instruments) to the diagnostic socket and check the engine management control unit: that there are no errors in the control unit the plausibiilty of the parameters	Continue to Step 2	Error detected in the control unit	Continue according to the instructions for the diagnostic equipment
1.2 16v 1.6 16v 1.8 16v 2.4 20v		Continue to Step 2	Error detected in the control unit	Continue according to the instructions for the diagnostic equipment
2	ACTIVE TESTING OF FUEL PUMP	All OK	Problems met	Operation
1.2 16v 1.6 16v 1.8 16v 2.4 20v	Carry out active testing of fuel pump and check if it is working properly	Continue to Step 3	Pump not working	Continue to Step 3
3	CHECKING PETROL PUMP ELECTRICAL CIRCUIT	All OK	Problems met	Operation
1.2 16v 1.6 16v 1.8 16v 2.4 20v	Check the petrol pump supply and earth See E5030 PETROL ENGINE ELECTRONIC MANAGEMENT	Continue to Step 4	Connections not correct	Restore connections See E5030 PETROL ENGINE ELECTRONIC MANAGEMENT
1.2 16v 1.6 16v 1.8 16v 2.4 20v		Continue to Step 4	Connections not correct	Replace the petrol pump Op. 1040A70)
4	CHECKING DELIVERY PRESSURE	All OK	Problems met	Operation
1.2 16v 1.6 16v 1.8 16v 2.4 20v	Check that the fuel pressure is correct Op. 0505C10	Continue to Step 5	Incorrect pressure: front pipes obstructed	Remove obstruction If necessary, replace the pipe
1.2 16v 1.6 16v 1.8 16v 2.4 20v	Check that the fuel pressure is correct Op. 0505C10	Continue to Step 5	Connections not correct	Replace the pump assembly Op. 1040A70)
5	IGNITION OPERATION CHECK	All OK	Problems met	Operation
1.2 16v 1.6 16v 2.4 20v	Check that the ignition is working properly at the coils by carrying out the test See Test 5510CC Check that the ignition coils are working:		No spark at more than one coil	Continue to Step 6
1.2 16v 1.6 16v 2.4 20v			No spark at more than one coil	Continue to Step 7
1.8 16v	Check that the ignition is working properly at the coils by carrying out the test See Test 5510CC Check that the ignition coils are working:		No spark at more than one coil	Continue to Step 8
1.8 16v			No spark at all the coils	Continue to Step 9
6	COIL ELECTRICAL CIRCUIT CHECK	All OK	Problems met	Operation
1.2 16v 1.6 16v 2.4 20v	Check the continuity of the main circuit of the coils which are not working See E5030 PETROL ENGINE ELECTRONIC MANAGEMENT	Continue to Step 8	Connections not correct	Restore connections See E5030 PETROL ENGINE ELECTRONIC MANAGEMENT
7	COIL ELECTRICAL CIRCUIT CHECK	All OK	Problems met	Operation
1.2 16v 1.6 16v 2.4 20v	Check the continuity of the main circuit of the coils See E5030 PETROL ENGINE ELECTRONIC MANAGEMENT	Continue to Step 9	Connections not correct	Restore connections See E5030 PETROL ENGINE ELECTRONIC MANAGEMENT
8	CHECKING CORRECT OPERATION	All OK	Problems met	Operation
1.2 16v 1.6 16v 1.8 16v 2.4 20v	Check that the fault is no longer present	End of diagnosis	Fault persists: coil defective	Replace the defective coils Op. 5510C10
9	CHECKING CORRECT OPERATION	All OK	Problems met	Operation
1.2 16v 1.6 16v 1.8 16v 2.4 20v	Check that the fault is no longer present	End of diagnosis	Fault persists: control unit defective	Replace the defective coils Op. 1056B82 Search for the fault starting from another symptom'

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Parts & tools for this job For 2001 Fiat Stilo

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