Contents

			Test results
1	COMPONENT CONCERNED	CHECK USING DIAGNOSTIC EQUIPMENT	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	CAN (Bus off)	Connect the Examiner diagnosis equipment, enter "CAN information" and check for any control unit errors	Go to Step 2	Network control unit faulty (CAN overloaded)	Continue as instructed by the diagnostic equipment
2	COMPONENT CONCERNED	CAN HIGH ISOLATION CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	CAN (Bus off)	Check the correct isolation of the CAN High to earth	Go to Step 3	CAN short circuit to earth	Restore insulation to earth
3	COMPONENT CONCERNED	CAN LOW ISOLATION CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	CAN (Bus off)	Check the insulation of the CAN Low to + battery	Go to Step 4	Short circuit to + battery	Restore insulation to + battery
4	COMPONENT CONCERNED	ENGINE MANAGEMENT CONTROL UNIT CONNECTOR CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Engine management control unit (Mute)	Check that the connectors for the engine management control unit are connected correctly	Go to Step 5	Engine management control unit connectors disconnected	Restore the correct connection of the engine management control unit
5	COMPONENT CONCERNED	CAN LINE CONTINUITY CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	CAN line (Mute)	Check the correct continuity of the CAN line	End of diagnosis	CAN line wiring interrupted	Restore the correct wiring of the CAN line