		Test results
1	PRELIMINARY CHECKS	All OK	Problems encountered	Operation
	Connect the Examiner diagnostic equipment and check that the following are not present at "CAN Information": - Inactive node/s - Node/s with error/s - Node/s with CAN error/s	Move on to Step 6	1. Communication with the Body Computer impossible 2. Instrument Panel Node inactive and/or with error 3. Engine Managementl Node inactive and/or with error 4. Error at CAN	1. Move on to Step 2 2. Move on to Step 5 3. Move on to Step 9 4. Move on to Step 13
2	CHECK USING DIAGNOSTIC EQUIPMENT	All OK	Problems encountered	Operation
	Use an Examiner to assess the possibility of connection to the Body Computer Node, to check that there are no errors and to check the presence of parameters	Move on to Step 1	1. Impossible to connect to the Body Computer control unit 2. Errors present	1. Move on to Step 3 2. Continue as instructed by the diagnostic equipment
3	ELECTRICAL POWER SUPPLY CHECK	All OK	Problems encountered	Operation
	Check that the electrical power supply for the Body Computer Node is correct and that the wiring between the nodes is correct, in particular that each individual pin is correctly connected	Move on to Step 4	1. Fault in positive electrical power supply and/or earth 2. Electrical connections not working	1. Replace the defective component (in the case of a fuse, find out what caused it to blow) 2. Restore the damaged wiring to correct operation
4	CHECK USING DIAGNOSTIC EQUIPMENT	All OK	Problems encountered	Operation
	Use an Examiner to check the possibility of connection to the Body Computer Node	Move on to Step 5	Impossible to connect to the Body Computer	Replace the Body Computer Op. 5505A35 MAIN BODY COMPUTER/JUNCTION UNIT - R.R.
5	CHECK USING DIAGNOSTIC EQUIPMENT	All OK	Problems encountered	Operation
	Using the Examiner in the Instrument Panel Node mode, check that there are no errors and that the parameters are present	Move on to Step 6	1. System fault 2. Error at CAN 3. Errors present	1. Move on to Step 6 2. Move on to Step 13 3. Continue as instructed by the diagnostic equipment
6	ELECTRICAL POWER SUPPLY CHECK	All OK	Problems encountered	Operation
	Check that the node power supply is correct. Check the wiring between the Body Computer and Instrument Panel, in particular, check that each individual pin is properly connected	Move on to Step 7	1. Fault in positive electrical power supply and/or earth 2. Electrical connections not working	1. Replace the defective component (in the case of a fuse, find out what caused it to blow) 2. Restore the damaged wiring to correct operation
7	CHECK USING DIAGNOSTIC EQUIPMENT	All OK	Problems encountered	Operation
	Using the Examiner in the Instrument Panel Node mode, check that there are no errors and that the parameters are present	Move on to Step 8	Fault persists	Replace the Instrument Panel Op. 5560B10 CONTROL PANEL - R+R
8	ACTIVE DIAGNOSIS CHECK	All OK	Problems encountered	Operation
	With the Examiner in the Instrument Panel Node ambient check that the vehicle protection warning light is correctly activated in Active Diagnosis	Move on to Step 9	The warning light does not flash	Replace the Instrument Panel Op. 5560B10 CONTROL PANEL - R+R
9	CHECK USING DIAGNOSTIC EQUIPMENT	All OK	Problems encountered	Operation
	Keeping the diagnostic equipment connected, check that the following are not present at the Engine Management Node: - System/component faults - Errors in the CAN network/s	Move on to Step 12	1. System/components faulty 2. Error at CAN 3. Errors present	1. Move on to Step 10 2. Move on to Step 13 3. Continue following the instructions given by the diagnostic equipment
10	ELECTRICAL POWER SUPPLY CHECK	All OK	Problems encountered	Operation
	Check that the node power supply is correct. Check the wiring between the Body Computer and the NCM, in particular, check that each individual pin is properly connected	Move on to Step 11	1. Fault in positive electrical power supply and/or earth 2. Electrical connections not working	1. Replace the defective component (in the case of a fuse, find out what caused it to blow) 2. Restore the damaged wiring to correct operation
11	CHECK USING DIAGNOSTIC EQUIPMENT	All OK	Problems encountered	Operation
	Using the Examiner in the Engine Management Node mode, check that there are no errors and that the parameters are present	Move on to Step 12	Fault persists	Replace the Engine Management Control Unit Op. 1056B82 INJECTION/IGNITION SYSTEM E.C.U. (ONE) - R + R
12	ACTIVE DIAGNOSIS CHECK	All OK	Problems encountered	Operation
	With the Examiner in the Engine Management Node ambient check that the vehicle protection warning light is correctly activated in Active Diagnosis	Move on to Step 13	The warning light does not flash	Replace the Engine Management Control Unit Op. 1056B82 INJECTION/IGNITION SYSTEM E.C.U. (ONE) - R + R
13	ELECTRICAL POWER SUPPLY CHECK	All OK	Problems encountered	Operation
	Check the node power supply/electrical connections are correct. Check the (network) wiring between Engine Management, Body Computer and Instrument Panel. Check, in particular, that each individual pin is correctly connected to each node.	End of diagnosis	1. Fault in positive electrical power supply and/or earth 2. Electrical connections not working	1. Replace the defective component (in the case of a fuse, find out what caused it to blow) 2. Restore the damaged wiring to correct operation

The Engine Management Node sends the message via the C-CAN to the Body Computer which makes it available to the Instrument Panel Node through the B-CAN.

Faults in the C-CAN will turn on the warning lights for the control units that communicate on this network. The "CAN Information" check is designed for this eventuality