Question

if the voltage output of a digital manifold absolute pressure (map) sensor is 2 volts, the approximate engine vacuum is ______ inches hg.
a) 15
b) 10
c) 0.0
d) 5

Explanation:

Digital MAP sensors typically have a voltage - vacuum relationship. A voltage of 2 volts from a MAP sensor corresponds approximately to an engine vacuum of 15 inches Hg. This is based on the typical calibration of MAP sensors in automotive engineering, where the voltage output is related to the manifold pressure (and thus vacuum) in a known way.

Answer:

A) 15