how to test electronic egr valve

{"cid":"91200047","title":"A2C53351845 5WY9190A VW 57mm EGR Throttle Body Aluminum Material","imgUrl":"https:\/\/img.chinax.com\/nimg\/70\/ed\/01fe49afb0fddb2e43bf88ef273f-200x200-1.jpg","attrs":{"Price":"negotiable","Brand Name":"Royal","Model Number":"A2C53351845 5WY9190A","Minimum Order Quantity":"1PCS","Delivery Time":"5-8 business days","Certification":"ISO 9001 \/ TS 16949","Place of Origin":"china","Payment Terms":"L\/C, T\/T, Western Union, MoneyGram","Supply Ability":"10000pcs\/month","Packaging Details":"standard","Product Name":"VW Throttle Body","OEM":"A2C53351845 5WY9190A","Suitable Model":"For VW AUDI SKODA 2.0","Supporting relationship":"Applicable","Package":"Neutral and as required","Condition":"Brand new"}}