D04 ENGINE NOT RUNNING SMOOTHLY - Lancia - MUSA - eLearn

184000415 - D04 ENGINE NOT RUNNING SMOOTHLY

There are decreases in performance during acceleration

0	PRELIMINARY CHECKS	All OK	Problems met	Operation
		Results of the tests
	Check, in order: the condition of the air intake circuit that there are no faults in the air filter whether the diesel pipes are leaking the accelerator pedal travel that there is no water, petrol, paraffin or dirt in the fuel tank and filter that there no obstructions in the exhaust system	Continue to Step 1	Fault in air intake circuit	Repair the air intake circuit
			Air filter blocked	Replace the filter element
			Leak from diesel pipes	stop the leak
			Accelerator pedal travel incomplete	Eliminate the cause of the problem
			Presence of water, petrol, paraffin or dirt detected	Clean the tank and pipes and replace the filter element
			Obstruction in the exhaust system	Replace the damaged system component
1	CHECK WITH DIAGNOSTIC EQUIPMENT	All OK	Problems met	Operation
	Connect the diagnostic equipment (Examiner or other instruments) to the diagnostic socket check for errors in the control unit plausibility of all the parameters	Continue to Step 2	An error is detected in the control unit	Continue following the instructions for the diagnostic equipment
		Continue to Step 2	unreliable parameters	Continue following the instructions for the diagnostic equipment
2	CHECK FLOW METER	All OK	Problems met	Operation
	Check the condition of the flow meter and the pipes connected to it	Continue to Step 3	Pipes damaged	Repair the pipe; if necessary replace it
3	CHECK EGR AND ADJUST TURBOCHARGER	All OK	Problems met	Operation
	Connect the diagnostic equipment (Examiner or other instruments) to the diagnostic socket.Carry out active diagnosis of EGR solenoid valveCarry out active diagnosis of the turbocharger regulator solenoid valveCheck operation of the variable geometry control actuator See Test 1064BC Variable geometry turbocharger actuator leakage test	Continue to Step 4	EGR solenoid valve not working	Check the continuity of the wiring See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT , if necessary, replae the solenoid valve Op. 1080C74
			Turbocharger solenoid valve not working	Check the continuity of the wiring See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT , if necessary, replae the solenoid valve Op. 1064A28
			Actuator does not work correctly	Check the condition of the vacuum circuit and, if necessary, replace the damaged components
4	THROTTLE SOLENOID VALVE CHECK	All OK	Problems met	Operation
	Check it is working properly. without sticking or intermediate stops. for the solenoid valve.(This can be done by removing the valve from its position and releasing it from the pipes, leaving the electrical connection, however, in place; at this point, operate the active diagnosis stage using the EXAMINER to check that it is working properly)	Continue to Step 5	Solenoid valve damaged	Repair the solenoid valve and, if necessary, replace it Op. 1060G72
5	ROAD TEST WITH DIAGNOSTIC EQUIPMENT	All OK	Problems met	Operation
	Road test the vehicle, reproducing the conditions in which the fault arises, keeping the diagnostic equipment connected. Check: for errors in the control unit plausibility of all the parameters	Continue to Step 6	An error is detected in the control unit	Continue following the instructions for the diagnostic equipment
			Unreliable parameters	Continue following the instructions for the diagnostic equipment
			Lack of dialogue with the control unit	Restore the connection between the engine management control unit and the diagnostic connector.
6	CHECK ON TURBOCHARGER	All OK	Problems met	Operation
	Check the operation of the turbocharger as described in the Test See Test 1064BA Check turbo presure	Continue to Step 7	Turbocharger faulty	Replace the turbocharger unit
7	PRESSURE SENSOR CHECK	All OK	Problems met	Operation
	Check that the sensor is working properly: after the engine has reached operating temperature, make sure that, with the engine IDLING and pressure regulator duty cycle operation between 16 and 20%, the minimum pressure measured by the sensor is around 300 bar +/-5%	Continue to Step 8	Pressure sensor faulty	Replace the pressure sensor
8	Continue as instructed by the tester	All OK	Problems met	Operation
	Check that the fault is no longer present	End of diagnosis	Fault persists: control unit faulty	Replace control unit Op. 1060G80