194001971 - D003 ENGINE NOT RUNNING SMOOTHLY / (IRREGULAR OPERATION)

The customer complains of: The engine is not running smoothly

		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 NECESSARYCheck that the air intake/vacuum circuit is working properly    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 CHECK ON SUPPLY LOW PRESSURE FUEL CIRCUITCheck the fastening of the battery earth terminal	Move on to Step 1	Oil level incorrectBattery earth terminal insecure	Restore the correct engine oil levelSee Test 0010T11 ENGINE OIL - CHECK LEVEL AND TOP UP, IF NECESSARYRestore the correct earth lead fastening    See E1020 EARTHS
1	AMBIENT PARAMETERS CHECK	All OK	Problems encountered	Operation
	Select the following control unit at the diagnostic equipment: EDC16C39 Diesel electronic injection control unit.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. Engine coolant temperature    See Test 1060OE CHECK ON OPERATION OF COOLANT TEMPERATURE SENSOR. Diesel temperature    See Test 1060EA DIESEL FUEL TEMPERATURE CHECK. Measured air mass    See Test 1060GG MEASURED AIR MASS CHECK. Engine rpm    See Test 1060GI ENGINE SPEED CHECKReach a constant speed of around 30 km/h and check that the reading on the diagnostic equipment for the vehicle speed coincides more or less with the speed shown on the instrument panel	Move on to Step 4	The vehicle speed is not measured correctly	Move on to Step 2
2	ABS CHECKS	All OK	Problems encountered	Operation
	Select the following control unit at the diagnostic equipment: ABS TRW EBC 430NG control unitCheck that the system is working properly    See Test 3340AB SPEED SIGNAL CHECK	Move on to Step 3
3	SOFTWARE VERSION CHECK	All OK	Problems encountered	Operation
	Check the software version of the EDC16C39 Diesel electronic injection control unitSee Test 1060GJ ENGINE MANAGEMENT CONTROL UNIT SOFTWARE RELEASE CHECK	Move on to Step 4
4	CLIMATE CONTROL SYSTEM CHECKS	All OK	Problems encountered	Operation
	Select the following control unit at the diagnostic equipment: EDC16C39 Diesel electronic injection control unit.Check that the system is working properly    See Test 5040OB CHECK ON OPERATION OF AIR CONDITIONING SYSTEM (PRESSURE)	Move on to Step 5
5	PREHEATING RELAY ACTIVE DIAGNOSIS	All OK	Problems encountered	Operation
	Carry out the active diagnosis for the preheating relay, checking that the result is positive.	Move on to Step 7	The result of the active diagnosis is negative	Move on to Step 6
6	HEATER PLUGS CHECK	All OK	Problems encountered	Operation
	Check that the heater plugs are working properly    See Test 5520CA GLOW PLUGS FUNCTIONAL TEST	Move on to Step 7
7	ELECTRICAL EQUIPMENT CHECK	All OK	Problems encountered	Operation
	Check that the fuses F1 (the last one at the bottom of the vertical row) and F20 (the first one on the right of the lower row) have not blown	Move on to Step 9	Fuse F1 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.
			Fuse F20 has blown	Move on to Step 8
8	DIESEL PREHEATING FUSE CHECK	All OK	Problems encountered	Operation
	Check the circuit for the protective fuse for the diesel preheating relay    See Test 5505AB CHECK DIESEL PREHEATING RELAY PROTECTIVE FUSE	Move on to Step 9
9	DIESEL PREHEATING RELAY CHECK	All OK	Problems encountered	Operation
	Check the diesel preheating relay circuitSee Test 5505AC CHECK DIESEL PREHEATING RELAY	End of diagnosis