Contents

			Test results
1	COMPONENT CONCERNED	BODY COMPUTER CONNECTIONS CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	CAN line wiring between Powertrain Control Module and Body Computer	Check that the CAN connections between the Powertrain Control Module and the Body Computer are not faulty. In particular, 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	POWERTRAIN CONTROL MODULE CONNECTION CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Powertrain Control Module connections	Disconnect/reconnect the Powertrain Control Module connectors and check for a loose pin	Go to Step 3	Presence of a loose pin	Restore the correct operation of the connector
3	COMPONENT CONCERNED	BODY COMPUTER CONNECTIONS CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Body Computer connections	Disconnect/reconnect the Body Computer connectors and check for loose pins	Go to Step 4	Presence of a loose pin	Restore the correct operation of the connector
4	COMPONENT CONCERNED	POWERTRAIN CONTROL MODULE SUPPLY CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Powertrain Control Module power supply	Check that the power supply for the Powertrain Control Module is correct	Go to Step 5	Power supply not correct	Restore the correct power supply
5	COMPONENT CONCERNED	BODY COMPUTER POWER SUPPLY CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Body Computer power supply	Check that the Body Computer power supply is correct	Go to Step 6	Power supply not correct	Restore the correct power supply
6	COMPONENT CONCERNED	POWERTRAIN CONTROL MODULE OPERATION CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Powertrain Control Module	Check that the Powertrain Control Module is working correctly	Go to Step 7	Powertrain Control Module not working properly	Replace the Powertrain Control Module Op. 1056B82 INJECTION/IGNITION SYSTEM E.C.U. (ONE) - R + R
7	COMPONENT CONCERNED	BODY COMPUTER OPERATION CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Body Computer	Check that the Body Computer is working correctly	End of diagnosis	The Body Computer is not working correctly	Replace Body Computer Op. 5505A35 MAIN BODY COMPUTER/JUNCTION UNIT - R.R.