Contents

			Test results
1	COMPONENT CONCERNED	CHECK WIRING BETWEEN ENGINE MANAGEMENT CONTROL UNIT AND ELECTRIC STEERING CONTROL DEVICE	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Wiring between engine management control unit and electric steering control device	Check that the CAN connections between the engine management control unit and the electric steering control device are not faulty. In particular, check that there are no open circuit or short circuit problems	Go to Step 2	There are faulty connections	Restore or, if necessary, replace the wiring
2	COMPONENT CONCERNED	ELECTRIC STEERING CONTROL DEVICE CONNECTION CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Electric steering control device connections	Disconnect/reconnect the electric steering control device connectors and check for the presence of loose pins	Go to Step 3	Presence of a loose pin	Restore the correct operation of the connector
3	COMPONENT CONCERNED	ENGINE MANAGEMENT CONTROL UNIT CONNECTION CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Engine management control unit connections	Disconnect/reconnect the engine management control unit connectors and check for a loose pin	Go to Step 4	Presence of a loose pin	Restore the correct operation of the connector
4	COMPONENT CONCERNED	ENGINE MANAGEMENT CONTROL UNIT SUPPLY CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Engine management control unit power supply	Check that the power supply for the engine management control unit is correct	Go to Step 5	Power supply not correct	Restore the correct power supply
5	COMPONENT CONCERNED	ELECTRIC STEERING CONTROL DEVICE SUPPLY CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Electric steering control device supply	Check that the electric steering control device supply is correct	Go to Step 6	Power supply not correct	Restore the correct power supply
6	COMPONENT CONCERNED	ELECTRIC STEERING CONTROL DEVICE OPERATION CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Electric steering control device	Check that the electric steering control device is operating correctly	Go to Step 7	Electric steering control device not operating correctly	Replace the electric steering control device Op. 4110D20 STEERING ELECTRICAL CONTROL DEVICE - R R
7	COMPONENT CONCERNED	ENGINE MANAGEMENT CONTROL UNIT OPERATION CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Engine management control unit	Check that the engine management control unit is working correctly	End of diagnosis	Engine management control unit not working correctly	Replace the engine management control unit Op. 1056B82 INJECTION/IGNITION SYSTEM E.C.U. (ONE) - R + R