244000452 - D03 ENGINE NOT RUNNING SMOOTHLY / (IRREGULAR OPERATION)

Engine judders when car is in motion and is not efficient.

STEP	OPERATIONS TO BE CARRIED OUT	TEST RESULTS
0	PRELIMINARY CHECKS	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the following, in order: condition of the air intake circuit; that there are no faults in the air filter; the seal of the diesel pipes; no obstructions in the catalytic converter; no water, petrol, paraffin or dirt in the fuel tank and filter; battery earth terminal fastening.	Move on to Step 1	Air intake circuit faulty	Repair the air intake circuit
			Air filter blocked	Replace the filter element    Op. 1048A14 AIR CLEANER FILTERING ELEMENT - REPLACE.
			Leaks from diesel pipes	Eliminate the leaks
			Water, petrol, paraffin or dirt found to be present	Clean the tank and pipes and replace the filter element    Op. 1080B62 CATALYTIC CONVERTER - R + R    Op. 1044B20 FUEL FILTER FILTERING ELEMENT - REPLACE
			Catalytic converter obstructed	Replace the catalytic converter    Op. 1080B62 CATALYTIC CONVERTER - R + R
			Battery earth terminal insecure	Secure battery earth terminal    See E5010 STARTING AND RECHARING
1	CHECK USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Connect the tester to the tester output.Check: that there are no errors in the control unit; the plausibility of the parameters; correct injector operation	Move on to Step 2	Error detected in the control unit	Continue following the instructions for the diagnostic equipment
			Parameters not plausible	Continue following the instructions for the diagnostic equipment
			No communication with the control unit	Restore the connection between the engine management control unit and the diagnostic connector    See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT
			Injectors defective	Replace the injectors    Op. 1060F10 FUEL INJECTORS
2	ROAD TEST USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Carry out a road test reproducing the conditions in which the fault occurs, keeping the diagnostic equipment connected.Check: that there are no errors in the control unit; parameter plausibility.	Move on to Step 3	Error detected in the control unit	Continue following the instructions for the diagnostic equipment
			Parameters not plausible	Continue following the instructions for the diagnostic equipment
			No communication with the control unit	Restore the connection between the engine management control unit and the diagnostic connector    See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT
3	CHECK ON CORRECT OPERATION	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the fault is no longer present	End of diagnosis	Fault persists	Replace the engine management control unit    Op. 1060G80 DS ELECTRIC INJECTION CONTROL UNIT - R R

Engine judders when car is in motion and is not efficient.

STEP	OPERATIONS TO BE CARRIED OUT	TEST RESULTS
0	PRELIMINARY CHECKS	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the following, in order: condition of the air intake circuit; that there are no faults in the air filter; the seal of the diesel pipes; no obstructions in the catalytic converter; that there is no water, petrol, paraffin or dirt in the fuel tank and fuel filter; battery earth terminal fastening.	Move on to Step 1	Air intake circuit faulty	Renew the air intake circuit
			Air filter blocked	Replace the filter element    Op. 1048A14 AIR CLEANER FILTERING ELEMENT - REPLACE.
			Leaks from diesel pipes	Eliminate the leaks
			Water, petrol, paraffin or dirt found to be present	Clean the tank and pipes and replace the filter element    Op. 1044B20 FUEL FILTER FILTERING ELEMENT - REPLACE
			Catalytic converter obstructed	Replace the catalytic converter    Op. 1080B62 CATALYTIC CONVERTER - R + R
			Battery earth terminal insecure	Secure battery earth terminal
1	CHECK USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Connect the tester to the tester output.Check: that there are no errors in the control unit; the plausibility of the parameters; correct operation of the switch on the clutch pedal.	Move on to Step 2	Error detected in the control unit	Continue following the instructions for the tester
			Parameters not plausible	Continue following the instructions for the tester
			Clutch switch defective	Replace clutch switch
2	ROAD TEST USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Carry out a road test by reproducing the conditions in which the fault occurs, keeping the tester connected.Check: that there are no errors in the control unit; parameter plausibility.	Move on to Step 3	Error detected in the control unit	Continue following the instructions for the tester
			Parameters not plausible	Continue following the instructions for the tester
			No communication with the control unit	Restore the connection between the engine management control unit and the diagnostic connector    See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT
3	CHECK ON CORRECT OPERATION	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the fault is no longer present	End of diagnosis	Fault persists	Replace the engine management control unit    Op. 1060G80 DS ELECTRIC INJECTION CONTROL UNIT - R R