Preparation for Test 1. Review 11 , 20 , 21 , 22 , 31 , 32 , 41 , 2. Check gray vacuum line to intake manifold for leaks. Permissible leakage of the elements with vacuum lines at 400 mbar vacuum per minute is 30 mbar. Parts Required for Test: 1 Connector 129 800 95 15

Pneumatic System

	Test scope	Test connection	Test condition	Nominal value	Possible cause/Remedy
1.0	Fresh/recirculating air flap vacuum actuator, (see Figure 1, 44)		button illuminated. Evacuate system with 300 mbar vacuum	30 mbar pressure increase in 1 minute	Vacuum lines, Fresh/recirculating air flap vacuum actuator.