B013 ENGINE STARTS WITH DIFFICULTY - Fiat - NUOVA BRAVO - eLearn

198001684 - B013 ENGINE STARTS WITH DIFFICULTY

The customer complains of: Engine starting poor, the starter motor works normally.

0	PRELIMINARY CHECKS	All OK	Problems encountered	Operation
		Test results
	Check that the engine oil level is correct Op. 0010T11 ENGINE OIL - CHECK LEVEL AND TOP UP, IF NECESSARY Check that the air intake/vacuum circuit is working properly See Test 1048OA AIR INTAKE/VACUUM CIRCUIT CHECKCheck the condition of the fuel supply circuit and make sure that it is working properly See Test 1040OA Fuel supply circuit check	Move on to Step 1	Oil level incorrect	Restore the correct engine oil level Op. 0010T11 ENGINE OIL - CHECK LEVEL AND TOP UP, IF NECESSARY
		Move on to Step 1	Air vacuum circuit fault	Replace vacuum pump. Eliminate the air intake via the intake manifold seal or the tappet cover and engine block seal. Make sure that the engine is perfectly sealed.
1	MODE PARAMETERS CHECK	All OK	Problems encountered	Operation
	Select the following control unit at the diagnostic equipment: EDC16C39 Diesel electronic injection control unit.Check the value of the following parameters:· Battery voltage See Test 5530BB BATTERY VOLTAGE CHECK· Target Diesel pressure· Measured Diesel pressure See Test 1060GH DIESEL PRESSURE CHECK· Atmospheric pressure See Test 1060GD ATMOSPHERIC PRESSURE CHECK· Engine rpm· Engine coolant temperature See Test 5030AA COOLANT TEMPERATURE SENSOR CHECK	Move on to Step 2
2	PARTICULATE FILTRATION SYSTEM CHECKS	All OK	Problems encountered	Operation
	Check that the DPF system is working properly See Test 1080BE PARTICLE FILTER SATURATION CHECK	Move on to Step 3	Presence of errors	Continue as described by the diagnostic equipment
3	PREHEATING RELAY ACTIVE DIAGNOSIS	All OK	Problems encountered	Operation
	Carry out the active diagnosis of the preheating relay, checking that the result is positive	Move on to Step 5	The result of the active diagnosis is negative	Move on to Step 4
4	GLOW HEATER PLUGS CHECK	All OK	Problems encountered	Operation
	Check that the glow heater plugs are working properly See Test 5520CA GLOW HEATER PLUGS OPERATION CHECK	Move on to Step 5	1.Glow heater plugs defective2.Wiring defective3.Preheating control unit defective4.Engine control unit defective	1.Replace the glow heater plugs Op. 5520C10 HEATER PLUGS - R+R 2.Renew the wiring3.Replace preheating control unit Op. 5520C20 HEATER PLUGS CONTROL UNIT - R.R 4.Replace the engine management control unit Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - R.R
5	HIGH PRESSURE CHECK	All OK	Problems encountered	Operation
	Connect the diagnostic equipment to the diagnostic socket.Checkthat the diesel pressure parameter is correct See Test 1060OD Injector high pressure fuel circuit check	Move on to Step 6	Pressure not correct	Move on to Step 12
6	LOW RETURN PRESSURE CHECK	All OK	Problems encountered	Operation
	Checkthat the pressure in the return pipe to the tank is less than 1 bar See Test 1060OA Low pressure fuel return circuit check	Move on to Step 7	Pressure above the maximum limit: return pipe to the tank obstructed	Repair the pipe, if necessary, replace it
7	LOW DELIVERY PRESSURE CHECK	All OK	Problems encountered	Operation
	Check as described in the test See Test 1060OB Low pressure fuel supply circuit checkthat the diesel pressure between the filter and the pressure pump is between 2 and 3 bar	Move on to Step 8	Pressure below the minimum limit or above the maximum limit	Move on to Step 11
8	LOW DELIVERY PRESSURE CHECK	All OK	Problems encountered	Operation
	Check that the difference in pressure upstream and downstream of the filter is less than 1 bar	Move on to Step 9	Difference in pressure more than 1 bar	Replace the diesel filter cartridgeOp. 1044B20 FUEL FILTER FILTERING ELEMENT - REPLACE
9	LOW DELIVERY PRESSURE CHECK	All OK	Problems encountered	Operation
	Check that the supply pump pressure at the filter inlet is more than 2.2 bar	Move on to Step 10	Pressure below 2 bar	Move on to Step 12
10	LOW DELIVERY PRESSURE CHECK	All OK	Problems encountered	Operation
	Measure the difference in pressure between the electrical pump outlet and the filter inlet, checking that it is less than 0.3 bar	Move on to Step 11	Difference in pressure more than 0.3 bar	Replace the pipe
11	LOW DELIVERY PRESSURE CHECK	All OK	Problems encountered	Operation
	Check as described in the test See Test 1040AA CHECK ON SUPPLY VOLTAGE AND CURRENT UPTAKEthat the pump supply voltage is equal to 12V and that the current uptake is between 2 and 10 Amps	Move on to Step 13	Voltage less than 12 volt	Check electrical wiring See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT
			Current greater than 10 A: pump defective	Replace the fuel pump assembly Op. 1040A70 SUBMERGED PUMP ASSEMBLY COMPLETE WITH LEVEL GAUGE CONTROL - R + R
			Current less than 2 A: pump obstructed	Replace the fuel pump Op. 1040A70 SUBMERGED PUMP ASSEMBLY COMPLETE WITH LEVEL GAUGE CONTROL - R + R and clean the fuel tank
12	CHECK CORRECT OPERATION	All OK	Problems encountered	Operation
	Replace the high pressure pump Op. 1060E10 DIESEL INJECTION PRESSURE PUMP - R.R. and check that the fault is no longer present	End of diagnosis	Fault persists	Replace the high pressure pump Op. 1060E10 DIESEL INJECTION PRESSURE PUMP - R.R.
13	CYLINDER COMPRESSION CHECK	All OK	Problems encountered	Operation
	Carry out the cylinder compression check Op. 0520G15 COMPRESSION TEST - CHECK WITH EXAMINER WITH SPARK PLUGS/INJECTORS REMOVED	Move on to Step 14	Cylinder compression insufficient	Move on to Step 14
14	CHECK ON CAUSE OF INSUFFICIENT COMPRESSION	All OK	Problems encountered	Operation
	Carry out Op. 1016C10 SINGLE CYLINDER HEAD - R.R. AND REPLACE GASKET to check the valve sealCheck condition of cylinders/piston rings	Move on to Step 15	Valve seal insufficient	Overhaul the head Op. 1016E10 SINGLE CYLINDER HEAD, REMOVED - OVERHAUL
		Move on to Step 15	Cylinders/piston rings worn	Restore the seal
15	CORRECT OPERATION CHECK	All OK	Problems encountered	Operation
	Check that the fault is no longer present	End of diagnosis	Fault persists	Replace the engine management control unit Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - R.R