		Test results
1	ELECTRICAL CONNECTIONS CHECK	All OK	Problems encountered	Operation
	Check for loose electrical connections at the sensor connector and at the engine management control unit.	Go to Step 2	Presence of loose electrical connections.	Restore the correct connections.
2	WIRING CONTINUITY CHECK	All OK	Problems encountered	Operation
	Check for breaks in the wiring continuity See E5030 PETROL ENGINES ELECTRONIC MANAGEMENT	Go to Step 3	Breaks in the wiring continuity.	Restore the correct continuity for the wiring.
3	WIRING INSULATION CHECK	All OK	Problems encountered	Operation
	Check the condition of the wiring insulation (check for inversion or short circuit at signal leads).	Go to Step 4	Wiring insulation faulty.	Restore correct wiring insulation.
4	CHECK ON SEEPAGE IN INTAKE MANIFOLD	All OK	Problems encountered	Operation
	Check for the presence of any seepage in the intake manifold.	Go to Step 5	Seepage inside the intake manifold.	Restore correct operation
5	SENSOR CONDITION CHECK	All OK	Problems encountered	Operation
	Check for the presence of any oil or oxidation on the sensitive element or impact to the sensor casing.	Go to Step 6	Sensor fouled or contaminated.	Clean the sensor.
6	LAMBDA SENSOR OPERATION CHECK	All OK	Problems encountered	Operation
	Check that the Lambda sensor is working properly by swapping the two sensors over (the fault follows the component).	Go to Step 7	Lambda sensor not working properly.	Replace the Lambda sensor Op. 1080B94 FRONT LAMBDA SENSOR TO WITH CATALYTIC CONVERTER - R.R
7	MANIFOLD PRESSURE SENSOR OPERATION CHECK	All OK	Problems encountered	Operation
	Check that the manifold pressure sensor is working properly (in the case of a mixture strength error) by carrying out the See Test 1056BU CHECK ON OPERATION OF PRESSURE SENSOR AND/OR INTAKE AIR TEMPERATURE SENSOR	Go to Step 8	Manifold pressure sensor not working properly	Replace the manifold pressure sensor Op. 1056B54 INTAKE AIR PRESSURE/TEMPERATURE SENSOR - R.R.
8	CANISTER SOLENOID OPERATION CHECK	All OK	Problems encountered	Operation
	Check that the canister solenoid is working properly (if there is a rich fuel system error)	Go to Step 9	Canister solenoid not working properly (stuck open)	Replace the canister solenoid Op. 1080E20 ENABLEMENT SOLENOID FOR FLOW OF FUEL VAPOUR TO INLET - R+R
9	FUEL PUMP OPERATION CHECK	All OK	Problems encountered	Operation
	Check that the fuel pump is working properly by performing the See Test 1040AB SUBMERGED FUEL PUMP CHECK	Go to Step 10	Fuel pump not working properly.	Replace the submerged pump Op. 1040A70 SUBMERGED PUMP ASSEMBLY COMPLETE WITH LEVEL GAUGE CONTROL - R + R
10	INJECTOR OPERATION CHECK	All OK	Problems encountered	Operation
	Check that the injectors are working properly by carrying out the See Test 1056BA INJECTOR OPERATION CHECK	Go to Step 11	Injectors not working properly	Replace the injectors Op. 1056B68 SET OF INJECTORS - R + R WITH FUEL MANIFOLD PIPE REMOVED - INCLUDES SEAL REPLACEMENT
11	FUEL QUALITY CHECK	All OK	Problems encountered	Operation
	Check the quality of the fuel and check for the presence of any water (in the event of lean fuel system error)	Go to Step 12	Fuel not compliant	Replace the fuel with other fuel that is compliant restoring the correct operation of the fuel supply system.
12	ENGINE MANAGEMENT CONTROL UNIT OPERATION CHECK	All OK	Problems encountered	Operation
	Check that the engine management control unit is working properly.	End of diagnosis	Engine management control unit faulty.	Replace the engine management control unit Op. 1056B82 INJECTION/IGNITION SYSTEM E.C.U. (ONE) - R + R

NO SIGNAL

		Test results
1	ELECTRICAL CONNECTIONS CHECK	All OK	Problems encountered	Operation
	Check for loose electrical connections at the sensor connector and at the engine management control unit.	Go to Step 2	Presence of loose electrical connections.	Restore the correct connections.
2	WIRING CONTINUITY CHECK	All OK	Problems encountered	Operation
	Check for breaks in the wiring continuity See E5030 PETROL ENGINES ELECTRONIC MANAGEMENT	Go to Step 3	Breaks in the wiring continuity.	Restore the correct continuity for the wiring.
3	WIRING INSULATION CHECK	All OK	Problems encountered	Operation
	Check the condition of the wiring insulation (check for inversion or open circuit at signal leads).	Go to Step 4	Wiring insulation faulty.	Restore correct wiring insulation.
4	CHECK ON SEEPAGE IN EXHAUST MANIFOLD	All OK	Problems encountered	Operation
	Check for the presence of any seepage in the exhaust manifold.	Go to Step 5	Seepage inside the exhaust manifold.	Restore correct operation
5	SENSOR CONDITION CHECK	All OK	Problems encountered	Operation
	Check for the presence of any oil or oxidation on the sensitive element or impact to the sensor casing. Also check that it is correctly fitted.	Go to Step 6	Sensor fouled, contaminated or not correctly installed.	Clean the sensor or fit it correctly.
6	LAMBDA SENSOR OPERATION CHECK	All OK	Problems encountered	Operation
	Check that the Lambda sensor is working properly by performing the See Test 1080BD Check on the operation of the downstream Lambda sensor	Go to Step 7	Lambda sensor not working properly.	Replace the Lambda sensor Op. 1080B95 REAR LAMBDA SENSOR TO CATALYTIC CONVERTER - R.R
7	ENGINE MANAGEMENT CONTROL UNIT OPERATION CHECK	All OK	Problems encountered	Operation
	Check that the engine management control unit is working properly.	End of diagnosis	Engine management control unit faulty.	Replace the engine management control unit Op. 1056B82 INJECTION/IGNITION SYSTEM E.C.U. (ONE) - R + R

ABOVE THRESHOLD

		Test results
1	ELECTRICAL CONNECTIONS CHECK	All OK	Problems encountered	Operation
	Check for loose electrical connections at the sensor connector and at the engine management control unit.	Go to Step 2	Presence of loose electrical connections.	Restore the correct connections.
2	WIRING CONTINUITY CHECK	All OK	Problems encountered	Operation
	Check for breaks in the wiring continuity See E5030 PETROL ENGINES ELECTRONIC MANAGEMENT	Go to Step 3	Breaks in the wiring continuity.	Restore the correct continuity for the wiring.
3	WIRING INSULATION CHECK	All OK	Problems encountered	Operation
	Check the condition of the wiring insulation (check for inversion of signal leads or short circuit to Vbatt).	Go to Step 4	Wiring insulation faulty.	Restore correct wiring insulation.
4	CHECK ON SEEPAGE IN EXHAUST MANIFOLD	All OK	Problems encountered	Operation
	Check for the presence of any seepage in the exhaust manifold.	Go to Step 5	Seepage inside the exhaust manifold.	Restore correct operation
5	SENSOR CONDITION CHECK	All OK	Problems encountered	Operation
	Check for the presence of any oil or oxidation on the sensitive element or impact to the sensor casing. Also check that it is correctly fitted.	Go to Step 6	Sensor fouled, contaminated or not correctly installed.	Clean the sensor or fit it correctly.
6	LAMBDA SENSOR OPERATION CHECK	All OK	Problems encountered	Operation
	Check that the Lambda sensor is working properly by performing the See Test 1080BD Check on the operation of the downstream Lambda sensor	Go to Step 7	Lambda sensor not working properly.	Replace the Lambda sensor Op. 1080B95 REAR LAMBDA SENSOR TO CATALYTIC CONVERTER - R.R
7	ENGINE MANAGEMENT CONTROL UNIT OPERATION CHECK	All OK	Problems encountered	Operation
	Check that the engine management control unit is working properly.	End of diagnosis	Engine management control unit faulty.	Replace the engine management control unit Op. 1056B82 INJECTION/IGNITION SYSTEM E.C.U. (ONE) - R + R

BELOW THRESHOLD

		Test results
1	ELECTRICAL CONNECTIONS CHECK	All OK	Problems encountered	Operation
	Check for loose electrical connections at the sensor connector and at the engine management control unit.	Go to Step 2	Presence of loose electrical connections.	Restore the correct connections.
2	WIRING CONTINUITY CHECK	All OK	Problems encountered	Operation
	Check for breaks in the wiring continuity See E5030 PETROL ENGINES ELECTRONIC MANAGEMENT	Go to Step 3	Breaks in the wiring continuity.	Restore the correct continuity for the wiring.
3	WIRING INSULATION CHECK	All OK	Problems encountered	Operation
	Check the condition of the wiring insulation (check for inversion of signal leads or short circuit to GND).	Go to Step 4	Wiring insulation faulty.	Restore correct wiring insulation.
4	CHECK ON SEEPAGE IN EXHAUST MANIFOLD	All OK	Problems encountered	Operation
	Check for the presence of any seepage in the exhaust manifold.	Go to Step 5	Seepage inside the exhaust manifold.	Restore correct operation
5	SENSOR CONDITION CHECK	All OK	Problems encountered	Operation
	Check for the presence of any oil or oxidation on the sensitive element or impact to the sensor casing. Also check that it is correctly fitted.	Go to Step 6	Sensor fouled, contaminated or not correctly installed.	Clean the sensor or fit it correctly.
6	LAMBDA SENSOR OPERATION CHECK	All OK	Problems encountered	Operation
	Check that the Lambda sensor is working properly by performing the See Test 1080BD Check on the operation of the downstream Lambda sensor	Go to Step 7	Lambda sensor not working properly.	Replace the Lambda sensor Op. 1080B95 REAR LAMBDA SENSOR TO CATALYTIC CONVERTER - R.R
7	ENGINE MANAGEMENT CONTROL UNIT OPERATION CHECK	All OK	Problems encountered	Operation
	Check that the engine management control unit is working properly.	End of diagnosis	Engine management control unit faulty.	Replace the engine management control unit Op. 1056B82 INJECTION/IGNITION SYSTEM E.C.U. (ONE) - R + R