22 · Diagnostics

White exhaust fumes

Make: Fiat
Model: Grande Punto Factory Service Manual
Year: 2005–2012
Section: Emissions › White exhaust fumes

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Fault diagnosisWhite exhaust fumes

WHITE EXHAUST FUMES

1.9 Multijet

The customer complains of: Excessive white fumes

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 by carrying out the See Test 1048OA AIR INTAKE/VACUUM CIRCUIT CHECK Check the condition of the fuel supply circuit and make sure that it is working properly See Test 1040OA FUEL SUPPLY CIRCUIT CHECK Check the operation of the low pressure supply circuit See Test 1060OB LOW FUEL DELIVERY PRESSURE 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
1	AMBIENT PARAMETERS CHECK	All OK	Problems encountered	Operation
	Select the following control unit at the diagnostic equipment: Diesel electronic injection control unit EDC16C39 CF4/EOBD CAN (EP engine 1.9). Check the value of the following parameters: . Battery voltage See Test 5530BB BATTERY VOLTAGE CHECK . Engine rpm See Test 1060GI CHECK ENGINE SPEED . Atmospheric pressure See Test 1060GD ATMOSPHERIC PRESSURE CHECK . Engine coolant temperature See Test 1060OE ENGINE COOLANT TEMPERATURE SENSOR OPERATION CHECK . Diesel temperature See Test 1060EA DIESEL TEMPERATURE CHECK	Move on to Step 2
2	PREHEATING RELAY ACTIVE CHECK	All OK	Problems encountered	Operation
	Carry out the active diagnosis for the preheating relay, checking that the result is positive. The check on the following system is only necessary if the outside temperature is below 0 °C.	Move on to Step 4	The result of the active diagnosis is negative	Move on to Step 3
3	HEATER PLUGS CHECK	All OK	Problems encountered	Operation
	Check that the heater plugs are working properly See Test 5520CA CHECK GLOW PLUG OPERATION	Move on to Step 4
4	ELECTRICAL EQUIPMENT CHECK	All OK	Problems encountered	Operation
	Check that fuse F59 has not blown (second from the left on the second row from the bottom)	Move on to Step 5	Fuse F59 has blown	Restore the connections or, if necessary, replace the junction unit in the engine compartment Op. 5505A13 ADDITIONAL JUNCTION UNIT IN ENGINE COMPARTMENT - R.R.
5	DIESEL PREHEATING RELAY CHECK	All OK	Problems encountered	Operation
	Check the diesel preheating relay circuit See Test 5505AC	Move on to Step 6
6	CYLINDER COMPRESSION CHECK	All OK	Problems encountered	Operation
	Carry out the cylinder compression check Op. 0510A10 CYLINDER COMPRESSION - CHECK FOR LOOSE SPARK PLUGS OR INJECTORS	Move on to Step 9	Cylinder compression insufficient	Move on to Step 7
7	CHECK CYLINDER HEAD GASKET AND VALVE OIL SEALS	All OK	Problems encountered	Operation
	Check: - that the cylinder head is correctly tightened; - the seal of the gasket - the seal of the valve oil seals	Move on to Step 8	Cylinder head tightening incorrect	Proceed with the removing-refitting of the cylinder head and renew the correct tightening Op. 1016C10 SINGLE CYLINDER HEAD - R.R. AND REPLACE GASKET
			Gasket damaged	Change the head gasket Op. 1016C10 SINGLE CYLINDER HEAD - R.R. AND REPLACE GASKET
			Oil seal missing	Replace the valve oil seals Op. 1016E10 SINGLE CYLINDER HEAD, REMOVED - OVERHAUL
8	CHECK THE CAUSE OF THE INSUFFICIENT COMPRESSION	All OK	Problems encountered	Operation
	With the cylinder head removed, check: - valve seal - cylinder/piston ring wear conditions	Move on to Step 9	Valve seal insufficient	Overhaul cylinder head Op. 1016E10 SINGLE CYLINDER HEAD, REMOVED - OVERHAUL
		Move on to Step 9	Cylinder/ring wear outside tolerances	Restore correct operating clearance
9	BLOW-BY CIRCUIT CHECK	All OK	Problems encountered	Operation
	Check the condition of the blow-by gas intake circuit, in particular check that there are no obstructions in the separator or in the pipes	Move on to Step 10	Fault in the pipe from separator to intake	Restore circuit to working order: change the pipe if necessary
		Move on to Step 10	Fault in the separator (tappet cover)	Restore circuit to working order: if necessary, replace the tappet cover
10	TURBOCHARGER SEAL CHECK	All OK	Problems encountered	Operation
	Check that there are no engine oil leaks from the turbocharger impeller shaft	End of diagnosis	Gasket seal insufficient	Change the turbocharger Op. 1064A27 TURBOCHARGER UNIT AND EXHAUST MANIFOLD - R.R.

1.3 Multijet

The customer complains of: Excessive white fumes

0	PRELIMINARY CHECKS	All OK	Problems encountered	Operation
		Test results
	Check that the engine coolant level is correct Op. 0010T21 ENGINE COOLANT - CHECK DENSITY AND CHANGE, IF NECESSARY Check 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	Coolant level incorrect	Restore the correct engine oil level Op. 0010T21 ENGINE COOLANT - CHECK DENSITY AND CHANGE, IF NECESSARY
1	INJECTOR ACTIVE DIAGNOSIS	All OK	Problems encountered	Operation
	Carry out the injector active diagnosis once again checking that the result is positive	Move on to Step 9	The result of the active diagnosis is negative	Move on to Step 2
2	ERRORS IN CONTROL UNIT CHECK	All OK	Problems encountered	Operation
	Select the following control unit at the diagnostic equipment: Marelli Diesel Injection 6F3 EOBD CAN (EP engine 1.3 JTD). Check that the following error is present: - P0005	Move on to Step 3	Error P0005 is not present	Replace the injector that gave a negative result during active diagnosis Op. 1060F10 FUEL INJECTORS - R.R.
3	HIGH PRESSURE CHECK	All OK	Problems encountered	Operation
	Connect the diagnostic equipment to the diagnostic socket. Check that the diesel pressure parameter is correct Op. 1060OD INSPECTION OF THE HIGH PRESSURE FUEL CIRCUIT	Move on to Step 9	Pressure not correct	Move on to Step 4
4	LOW RETURN PRESSURE CHECK	All OK	Problems encountered	Operation
	that the pressure in the return pipe to the tank is less than 1 bar	Move on to Step 5	Pressure above the maximum limit: return pipe to the tank obstructed	Repair the pipe and replace if necessary
5	LOW SUPPLY 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 6	Difference in pressure more than 1 bar	Replace the fuel filter cartridge Op. 1044B10 FUEL FILTER ASSEMBLY - R + R OR REPLACE
6	LOW SUPPLY PRESSURE CHECK	All OK	Problems encountered	Operation
	Check that the supply pump pressure at the filter inlet is more than 2.2 bar (75 bhp) or 4.5 bars (90 bhp)	Move on to Step 9	Pressure lower than 2 bars (75 bhp) or 4.5 bars (90 bhp)	Move on to Step 7
7	LOW SUPPLY 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 8	Difference in pressure more than 0.3 bar	Replace the pipe
8	LOW SUPPLY PRESSURE CHECK	All OK	Problems encountered	Operation
	Check that the pump supply voltage is equal to 12V and that the current uptake is between 2 and 10 A See Test 1040AA CHECK ON SUPPLY VOLTAGE AND CURRENT UPTAKE	Move on to Step 9	1. Voltage lower than 12 V 2. Current greater than 10 A: pump defective 3. Current less than 2 A: pump obstructed	1. Check electrical wiring See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT 2. Replace the fuel pump Op. 1040A70 SUBMERGED PUMP ASSEMBLY COMPLETE WITH LEVEL GAUGE CONTROL - R + R 3. Replace the fuel pump and clean the fuel tank Op. 1040A70 SUBMERGED PUMP ASSEMBLY COMPLETE WITH LEVEL GAUGE CONTROL - R + R
9	CONFIGURATION TESTS	All OK	Problems encountered	Operation
	Select the following control unit at the diagnostic equipment: Marelli Diesel Injection 6F3 EOBD CAN (EP engine 1.3 JTD). Check in the Configurations section whether the replacement of any of the following components was not followed by the subsequent configuration: - injector In this case, carry out the configuration checking that the outcome is positive	Move on to Step 12	The outcome of the configuration is not positive	Move on to Step 10
10	ERRORS CHECK	All OK	Problems encountered	Operation
	Check whether any of the following errors are present using the diagnostic equipment: - P1301 - U0001 - U0426 - U1700	Move on to Step 12	1. Error P1301 is present 2. Error U0001 is present 3. Error U0426 is present 4. Error B1700 is present	1. Move on to Step 11 2. Continue as indicated See table U0001 CAN line error 3. Memorise the CODE. If it is not possible, replace the engine control unit Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - .R 4. Continue as indicated See table U1700 CAN network (NCM - NBC)
11	IMA CLASSIFICATION	All OK	Problems encountered	Operation
	In the Configurations section on the diagnostic tester, rerun the IMA classification and ensure it is successful	End of diagnosis	The classification is unsuccessful	Replace the engine management control unit Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - .R
12	AMBIENT PARAMETERS CHECK	All OK	Problems encountered	Operation
	Select the following control unit at the diagnostic equipment: Marelli Diesel Injection 6F3 EOBD CAN (EP engine 1.3 JTD). Check the value of the following parameters: - Coolant temperature See Test 1060OE ENGINE COOLANT TEMPERATURE SENSOR OPERATION CHECK - Diesel temperature See Test 1060EA DIESEL TEMPERATURE CHECK . Atmospheric pressure See Test 1060GD ATMOSPHERIC PRESSURE CHECK	Move on to Step 13
13	INTAKE CIRCUIT CHECK	All OK	Problems encountered	Operation
	Check that the air intake/vacuum circuit is working properly See Test 1048OA AIR INTAKE/VACUUM CIRCUIT CHECK	Move on to Step 14
14	PREHEATING RELAY ACTIVE DIAGNOSIS	All OK	Problems encountered	Operation
	Carry out the active diagnosis of the preheating relay, checking that the result is positive The check on the following system is only necessary if the outside temperature is below 0 °C.	Move on to Step 16	The result of the active diagnosis is negative	Move on to Step 15
15	HEATER PLUGS CHECK	All OK	Problems encountered	Operation
	Check that the heater plugs are working properly See Test 5520CA CHECK GLOW PLUG OPERATION	Move on to Step 16
16	CYLINDER COMPRESSION CHECK	All OK	Problems encountered	Operation
	Carry out the cylinder compression check Op. 0510A10 CYLINDER COMPRESSION - CHECK FOR LOOSE SPARK PLUGS OR INJECTORS	Move on to Step 19	Cylinder compression insufficient	Move on to Step 17
17	CHECK CYLINDER HEAD GASKET AND VALVE OIL SEALS	All OK	Problems encountered	Operation
	Check: - that the cylinder head is correctly tightened; - the seal of the gasket - the seal of the valve oil seals	Move on to Step 18	1. Cylinder head tightening incorrect 2. Gasket damaged 3. Oil seal missing	1. Proceed with the removing-refitting of the cylinder head and renew the correct tightening Op. 1016C10 SINGLE CYLINDER HEAD - R.R. AND REPLACE GASKET 2. Change the head gasket Op. 1016C10 SINGLE CYLINDER HEAD - R.R. AND REPLACE GASKET 3. Replace the valve oil seals Op. 1016E10 SINGLE CYLINDER HEAD, REMOVED - OVERHAUL
18	CHECK THE CAUSE OF THE INSUFFICIENT COMPRESSION	All OK	Problems encountered	Operation
	With the cylinder head removed, check: - valve seal - cylinder/piston ring wear conditions	Move on to Step 19	1. Valve seal insufficient 2. Cylinder/ring wear outside tolerances	1. Overhaul cylinder head Op. 1016E10 SINGLE CYLINDER HEAD, REMOVED - OVERHAUL 2. Restore correct operating clearance
19	BLOW-BY CIRCUIT CHECK	All OK	Problems encountered	Operation
	Check the condition of the blow-by gas intake circuit. In particular, check for obstructions in the separator or pipes	Move on to Step 20	1. Fault in the pipe from separator to intake 2. Fault in the separator (tappet cover)	1. Restore circuit to working order: change the pipe if necessary 2. Restore circuit to working order: if necessary, replace the tappet cover
20	TURBOCHARGER SEAL CHECK	All OK	Problems encountered	Operation
	Check that there are no engine oil leaks from the turbocharger impeller shaft	Move on to Step 21	Gasket seal insufficient	Change the turbocharger Op. 1064A27 TURBOCHARGER UNIT AND EXHAUST MANIFOLD - R.R.
21	CHECK CORRECT OPERATION	All OK	Problems encountered	Operation
	Replace the high pressure pump and check that the fault is no longer present	End of diagnosis	Fault persists	Contact the Service Department for further information on the problem

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