199002955 - D004 ENGINE NOT RUNNING SMOOTHLY

The customer complains that: Irregular engine operation, loss of power that can be reproduced

		Test results
0	PRELIMINARY CHECKS	All OK	Problems encountered	Operation
	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 CHECKCheck the condition of the fuel supply circuit and make sure that it is working properly    See Test 1040OA FUEL SUPPLY CIRCUIT CHECKCheck the operation of the low pressure supply circuit    See Test 1060OB LOW FUEL DELIVERY PRESSURE CIRCUIT CHECK	Move on to Step 1	Level irrregular	Restore the correct engine oil level    Op. 0010T11 ENGINE OIL - CHECK LEVEL AND TOP UP, IF NECESSARY
1	MODE PARAMETERS CHECK	All OK	Problems encountered	Operation
	Select the following control unit at the diagnostic equipment: 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· Accelerator pedal· Accelerator position 1 AD/C· Accelerator position 2 AD/C    See Test 1068AC ACCELERATOR PEDAL CHECKS· Atmospheric pressure    See Test 1060GD ATMOSPHERIC PRESSURE CHECK- Supercharging pressure Objective- Supercharging pressure Measured    See Test 1060GF SUPERCHARGING PRESSURE CHECK· Measured air mass    See Test 1060GG CHECK MEASURED AIR MASS· Diesel temperature    See Test 1060EA DIESEL TEMPERATURE CHECK- Target Diesel pressure- Measured Diesel pressure    See Test 1060GH DIESEL PRESSURE CHECK· Engine rpm    See Test 1060GI CHECK ENGINE SPEED	Move on to Step 2
2	EGR AND TURBOCHARGER REGULATION 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 that the system is working properly    Vedere Prova 5040OB VERIFICA FUNZIONAMENTO IMPIANTO CONDIZIONATORE (PRESSIONI)	Move on to Step 3
3	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 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 CHECK GLOW PLUG OPERATION	Move on to Step 5
5	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 6	Fuse F59 has blown	Restore the connections or, if necessary, replace the junction unit in the engine compartment    Op. 5505A13 CENTRALINA DI DERIVAZIONE SUPPLEMENTARE NEL VANO MOTORE - S.R.
6	DIESEL PREHEATING RELAY CHECK	All OK	Problems encountered	Operation
	Check the diesel preheating relay circuitSee Test 5505AC	Move on to Step 7
7	EGR AND TURBOCHARGER REGULATION CHECK	All OK	Problems encountered	Operation
	Keep the diagnotsic equipment connected to the diagnostic socket.Carry out the active diagnosis of the EGR solenoid valveCarry out the active diagnosis for the turbocharger regulation solenoid valveCheck the operation of the variable geometry control actuator	Move on to Step 8	EGR solenoid valve not working	Restore the wiring continuity    See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT Replace the solenoid if necessary    Op. 1080C24 E.G.R. SYSTEM SOLENOID - R + R
			Variable geometry control solenoid does not work	Restore the wiring continuity    See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT Replace the solenoid if necessary    Op. 1064B42 SOLENOID CONTROLLING TURBOCHARGER VANE POSITION ACTUATOR - R.R
8	TURBOCHARGER CHECK	All OK	Problems encountered	Operation
	Check the operation of the turbocharger    See Test 1064BA SUPERCHARGING PRESSURE CHECK	Move on to Step 9	Turbocharger faulty	Replace the turbocharger unit    Op. 1064A27 TURBOCHARGER UNIT AND EXHAUST MANIFOLD - R.R.
9	CORRECT OPERATION CHECK	All OK	Problems encountered	Operation
	Check that the fault is no longer present	End of diagnosis	Fault persists	Replace the control unit    Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - R.R