22 · Diagnostics

Black exhaust fumes

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

‹ Prev White exhaust fumes Next › Excessive exhaust fumes

Fault diagnosisBlack exhaust fumes

BLACK EXHAUST FUMES

1.9 Multijet

The customer complains of: Excessive black/grey 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 coolant temperature See Test 1060OE ENGINE COOLANT TEMPERATURE SENSOR OPERATION CHECK . Diesel temperature See Test 1060EA DIESEL TEMPERATURE CHECK . Engine rpm See Test 1060GI CHECK ENGINE SPEED	Move on to Step 2
2	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)	End of diagnosis	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.

1.3 Multijet

The customer complains of: Excessive black/grey 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	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: 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 - Air temperature (debimeter) See Test 1060GK CHECK CONTROL UNIT SOFTWARE AND HARDWARE . Atmospheric pressure See Test 1060GD ATMOSPHERIC PRESSURE CHECK	Move on to Step 2
2	CHECK SUPPLY AND INTAKE CIRCUIT	All OK	Problems encountered	Operation
	Check that the air intake/vacuum circuit is working properly 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	Move on to Step 3
3	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 – High pressure pump Shut OFF valve	Move on to Step 4	Error P0005 is not present	Replace the injector that gave a negative result during active diagnosis Op. 1060F10 FUEL INJECTORS - R.R.
4	HIGH PRESSURE CHECK	All OK	Problems encountered	Operation
	Connect the diagnostic equipment to the diagnostic socket. Check that the diesel pressure parameter is correct See Test 1060OD HIGH PRESSURE FUEL CIRCUIT CHECK	Move on to Step 10	Pressure not correct	Move on to Step 5
5	LOW RETURN PRESSURE CHECK	All OK	Problems encountered	Operation
	that the pressure in the return pipe to the tank is less than 1 bar See Test 1060OA LOW FUEL RETURN PRESSURE CIRCUIT CHECK	Move on to Step 6	Pressure above the maximum limit: return pipe to the tank obstructed	Repair the pipe and replace if necessary
6	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 7	Difference in pressure more than 1 bar	Replace the fuel filter cartridge Op. 1044B10 FUEL FILTER ASSEMBLY - R + R OR REPLACE
7	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 10	Pressure lower than 2 bars (75 bhp) or 4.5 bar (90 bhp)	Move on to Step 8
8	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 9	Difference in pressure more than 0.3 bar	Replace the pipe
9	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 10	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
10	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: - Measured Diesel pressure See Test 1060GH DIESEL PRESSURE CHECK - Pressure regulator opening (MPROP) See Test 1060GR CHECK OPERATION OF FUEL PRESSURE SENSOR ON RAIL	Move on to Step 11
11	PREHEATING RELAY ACTIVE DIAGNOSIS	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 13	The result of the active diagnosis is negative	Move on to Step 12
12	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 13
13	CHECK CORRECT OPERATION	All OK	Problems encountered	Operation
	Replace the high pressure pump and check that the fault is no longer present Op. 1060E10 DIESEL INJECTION PRESSURE PUMP - R.R.	End of diagnosis	Fault persists	Contact the Service Department for further information on the problem

‹ Prev White exhaust fumes Next › Excessive exhaust fumes

Parts & tools for this job For 2005 Fiat Grande Punto

Links open Amazon search results in a new tab. As an Amazon Associate I earn from qualifying purchases.