D21 ENGINE CUTS OUT WHILST DRIVING - Fiat - MULTIPLA - eLearn

2888338 - D21 ENGINE CUTS OUT WHILST DRIVING

When driving with the engine hot, it suddenly cuts out and then, a few moments later, starts normally.

0	PRELIMINARY CHECKS	All OK	Problems met	Operation
		Results of the tests
	First check that there is fuel in the tank and whether the inertia switch has intervened Check the condition and the efficiency of the valve on the diesel filter mounting	Continue to Step 1	Dirt in the fuel tank or no fuel	Renew and, if necessary, clean the tank Op. 1040A10
		Continue to Step 1	Valve on diesel filter mounting faulty	Replace valve on diesel filter mounting Op. 1044B16
1	CHECKING WITH DIAGNOSTIC EQUIPMENT	All OK	Problems met	Operation
	Connect the diagnostic equipment (Examiner or other instruments) to the diagnostic socket Check that there are no faults in the engine management control unit the 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	Lack of dialogue with the control unit	Restore the connection between the engine management control unit and the diagnostic connector ( See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT )
2	CHECK ON FUEL FILTER	All OK	Problems met	Operation
	Check the operation of the fuel filter	Continue to Step 3	Presence of water, petrol, paraffin or dirt detected	Clean the tank and pipes and replace the filter element Op. 1044B20
3	CHECK ON RETURN LOW PRESSURE	All OK	Problems met	Operation
	Check the pressure between the manifold and the return pipe to the tank See Test 1060A Check low pressure fuel circuit	Continue to Step 4	Pressure over 1bar: the return circuit to the tank is clogged	Eliminate any blockages in the return pipe or in the cage for the low pressure pump immersed in the tank
4	LOW SUPPLY PRESSUR CHECK	All OK	Problems met	Operation
	Check the pressure between diesel filter and high pressure pump See Test 1060B Check low pressure fuel circuit	Continue to Step 5	Leaks in circuit	Eliminate fuel leaks from low pressure circuit pipes/connectors
			Pressure less than 1.8 bar or difference in pressure between Test B and Test A less than 1 bar	Replace the fuel pump Op. 1040A70
			Pressure over 3.5 bar	Replace valve on diesel filter mounting Op. 1044B16
5	INJECTOR LEAKAGETEST	All OK	Problems met	Operation
	Check injectors for diesel leaks: See Test 1060C Check high pressure fuel circuit	Continue to Step 6	Leak detected from one or more injectors	Replace injector(s) Op. 1060F10
6	HIGH PRESSURE CHECK	All OK	Problems met	Operation
	Check diesel pressure parameter measured using diagnostic instrument: See Test 1060D Check high pressure fuel circuit	Continue to Step 7	Pressure reading below 150 bar	Replace high pressure pump Op. 1060E10
		Continue to Step 7	Leaks in circuit	Eliminate fuel leaks from high pressure circuit pipes/connectors
7	CHECK ON CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present	End of diagnosis	Fault persists	Search for the fault starting from another symptom