ANSWER: 
The sensor that might be used as an aspirator tube is inside Vehicle Temperature. 
EXPLANATION: 
An aspirator tube is a narrow tube in which liquid or gases pass through it narrower initially and then it is subjected to expansion in a cross-sectional area. Hence vacuum could be produced. 
The inside air temperature sensor could also be used as an alternative for the Aspirator tube to produce a vacuum. It is also known as Intake Vehicle Temperature.