Contents

			Test results
1	COMPONENT CONCERNED	WIRING CHECK BETWEEN POWERTRAIN CONTROL MODULE AND SDU CONTROL UNIT	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Wiring between Powertrain Control Module and SDU control unit	Check that the CAN connections between the Powertrain Control Module and the SDU control unit 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	SDU CONTROL UNIT CONNECTION CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Connections on SDU control unit	Disconnect/reconnect the SDU control unit 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	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 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	SDU CONTROL UNIT POWER SUPPLY CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	SDU control unit supply	Check that the power supply for the SDU control unit is correct	Go to Step 6	Power supply not correct	Restore the correct power supply
6	COMPONENT CONCERNED	SDU CONTROL UNIT OPERATION CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	SDU control unit	Check that the SDU control unit is operating correctly	Go to Step 7	SDU control unit not working correctly	Replace the SDU control unit Op. 1057B80 GPL INJECTION SYSTEM CONTROL UNIT R R
7	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	End of diagnosis	Powertrain Control Module not working properly	Replace the Powertrain Control Module Op. 1056B82 INJECTION/IGNITION SYSTEM E.C.U. (ONE) - R + R