194002240 - 5505AE ENGINE MANAGEMENT CONTROL UNIT POWER SUPPLY FUSE CIRCUIT CHECK

	CHECK TO BE PERFORMED	RESOLUTION IF THE CHECK IS NOT OK
1	Turn the ignition key OFF.Turn off all the electrical consumers.Reinsert fuse F18 in the engine compartment junction unit base    See B001 ENGINE COMPARTMENT JUNCTION UNITTurn the ignition key ON and check the fuse blows.Move on to Step 3	A temporary current overload has occurred in the system behind fuse F18.Move on to Step 2
2	If faults are present, repair or if necessary replace the electrical wiring for the engine compartment junction unit    See E1010 POWER SUPPLYThe test can be considered over	Replace the engine compartment junction unit    Op. 5505A13 ADDITIONAL JUNCTION UNIT IN ENGINE COMPARTMENT - R.R.
3	Disconnect the cable loom connector from the engine management control unit connector A    See M010 ENGINE MANAGEMENT CONTROL UNITRefit fuse F18 on the junction unit base and check that it cuts in    See B001 ENGINE COMPARTMENT JUNCTION UNIT	Replace the engine management control unit    Op. 1056B82 INJECTION/IGNITION SYSTEM E.C.U. (ONE) - R + R
4	Disconnect the connector from the cable loom for each individual ignition coil and check that fuse F18 cuts in    See A031 IGNITION MODULE	Replace the coil that does not trigger the fuse    Op. 5510C14 IGNITION COIL/S - R.R.
5	Turn the ignition key OFF.In the engine compartment junction unit, remove relay T10 from the base unit (it is the second from left in the bottom row).    See B001 ENGINE COMPARTMENT JUNCTION UNITTurn the ignition key ON and check the fuse blows	Replace relay T10
6	If faults are present, repair or, if necessary, replace the electrical wiring between the engine compartment junction unit, the engine management control unit and the coils.    See E5030 PETROL ENGINES ELECTRONIC MANAGEMENT	Replace the engine compartment junction unit    Op. 5505A13 ADDITIONAL JUNCTION UNIT IN ENGINE COMPARTMENT - R.R.