Exhaust gas recirculation valve - Check electronics - ME-SFI fuel injection system - AD07.61-P-6000-52A

111.974 

	Scope of test	Tester/test connection	Operation/Prerequisite:	Specified value	Possible cause/Remedy
1.0	Exhaust gas recirculation valve		Test connection		EGR valve
P0400	Mechanical test		Engine: Idle speed  Apply vacuum of approx. 500 mbar using
	111.974		vacuum tester:	Irregular engine running
			Engine: OFF  Apply vacuum of 500 mbar using vacuum tester and remove hose:
				EGR valve can be heard to close