Contents

			Test results
1	COMPONENT CONCERNED	CHECK CONNECTIONS ON ENGINE MANAGEMENT CONTROL UNIT	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Connections on the engine management control unit	Check for the presence of loose connections on the engine management control unit and the other CAN nodes	Go to Step 2	Presence of loose connections	Restore the correct connections
2	COMPONENT CONCERNED	CAN WIRING CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	CAN wiring	Check the continuity of the CAN wiring	Go to Step 3	Faults in the continuity of the wiring	Restore the correct continuity for the wiring
3	COMPONENT CONCERNED	CAN WIRING CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	CAN wiring	Check the correct insulation of the CAN wiring	Go to Step 4	Wiring insulation not correct	Restore correct wiring insulation
4	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