P0490 EGR valve control

			Test results
1	COMPONENT CONCERNED	CHECK WIRING BETWEEN HIGH PRESSURE EGR SOLENOID VALVE AND ENGINE CONTROL MODULE	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Wiring between high pressure EGR valve and powertrain control module	Check the continuity of the wiring between high pressure EGR valve and PINS 35/50/9/24/39 of the engine control module	Go to Step 2	Breaks in the wiring continuity	Restore the correct continuity of the damaged wiring line.
2	COMPONENT CONCERNED	CHECK USING DIAGNOSIS EQUIPMENT	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	High pressure EGR valve	Connect the diagnostic tool to the powertrain control module, go to the “ACTUATORS” menu and launch procedure “EGR DC Motor test”. Check the outcome of the test	Go to Step 3	The test did NOT have a positive outcome	Replace the high pressure EGR valve Op. 1080C24 E.G.R. SYSTEM SOLENOID - R + R
3	COMPONENT CONCERNED	EGR VALVE CONNECTION CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	High pressure EGR valve and powertrain control module connections	Check for loose connections on the high pressure EGR valve and the powertrain control module	Go to Step 4	Presence of loose connections	Restore the correct connections
4	COMPONENT CONCERNED	CHECK USING DIAGNOSIS EQUIPMENT	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	High pressure EGR valve	Check for other error codes stored in the powertrain control module	End of diagnosis	Additional errors stored in the Powertrain Control Module	Follow the instructions provided by the diagnostic tool to resolve the errors