		Test results
0	PRELIMINARY CHECKS	All OK	Problems encountered	Operation
	Battery correctly fastened to earth See E1010 POWER SUPPLY	Go to Step 1	Fastening to earth incorrect	Restore the correct wiring.
1	CHECK USING DIAGNOSTIC EQUIPMENT	All OK	Problems encountered	Operation
	Connect the diagnosis equipment (Examiner or other instruments) to the diagnosis socket and check: - that there are no faults in the engine management control unit; - parameter plausibility	Go to Step 2	Error detected in the control unit	Continue following the instructions on the diagnostic equipment
2	FUEL PRESSURE CHECK	All OK	Problems encountered	Operation
	Check the fuel supply pressure, if necessary on the road (to reproduce the conditions in which the problem occurs) Op. 0520G46 FUEL SYSTEM - CHECK SUPPLY PRESSURE USING THE EXAMINER	Go to Step 3	Pressure not correct: obstructions in the fuel supply pipe	Remove the obstructions in the fuel pipe, replace it if necessary
		Go to Step 3	Pressure not correct: petrol pump damaged	Replace the petrol pump assembly Op. 1040A70 SUBMERGED PUMP ASSEMBLY COMPLETE WITH LEVEL GAUGE CONTROL - R + R
3	IGNITION SYSTEM CHECK	All OK	Problems encountered	Operation
	Inspect the spark plugs and check they are working properly Check for any coil defects by carrying out See Test 5510CI CHECK ON OPERATION OF IGNITION COILS See Test 5510CE IGNITION CONTROL SIGNAL CHECK See Test 5510OB IGNITION COIL RESISTANCE CHECK	Go to Step 4	Spark plugs defective	Replace spark plugs Op. 5510D10 SPARK PLUGS - R+R
		Go to Step 4	Coil leakage	Replace coils Op. 5510C14 IGNITION COIL/S - R.R.
4	AIR INTAKE SYSTEM CHECK	All OK	Problems encountered	Operation
	check the condition of the air intake circuit;	Go to Step 5	Air intake circuit faulty (air entering via the intake manifold gasket)	Restore the correct seal.
	check the condition of the air intake circuit;	Go to Step 5	Air intake circuit faulty (air entering via the throttle body gasket)	Restore the correct seal.
5	DETONATION SENSOR CHECK	All OK	Problems encountered	Operation
	Check the detonation sensor is working properly using the Examiner	Go to Step 6	Connection defective	Restore correct connection.
			Wiring defective	Restore the correct wiring.
			Detonation sensor defective	Replace the knock sensor Op. 5510C42 DETONATION SENSOR (ONE) - R.R.
6	ENGINE COOLANT TEMPERATURE SENSOR CHECK	All OK	Problems encountered	Operation
	Check that the engine temperature sensor is working properly by carrying out the See Test 1056BC Engine coolant temperature sensor operation check	Go to Step 7	Engine temperature sensor not working correctly.	Replace the engine temperature sensor Op. 1056B50 ENGINE COOLANT TEMPERATURE SENSOR - R + R
7	INJECTOR OPERATION CHECK	All OK	Problems encountered	Operation
	Check the condition of the injector Check the condition of the wiring Check that the injectors are working properly by carrying out the See Test 1056BA INJECTOR OPERATION CHECK	Go to Step 8	Connections defective	Restore the correct connections.
			Wiring defective	Restore the correct wiring.
			Injector defective	Replace the injector Op. 1056B70 INJECTOR (ONE) - R + R WITH FUEL MANIFOLD PIPE REMOVED - INCLUDES SEAL REPLACEMNT
8	ENGINE CONTROL UNIT CHECK	All OK	Problems encountered	Operation
	Check that the engine control unit is working properly	End of diagnosis	Engine management control unit defective.	Replace the engine management control unit Op. 1056B82 INJECTION/IGNITION SYSTEM E.C.U. (ONE) - R + R

Metallic noises are coming from the engine which change when the throttle opens and it sounds like popcorn popping - excessive knock