July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Barometric Pressure Sensor: Specifications

NOTE: Apply vacuum to sensor at Barometric side. Measure voltage at Powertrain Control Module (PCM) terminal 3H.

86.3 kPa (26.0 in. Hg) Approx. 0.3 volts
61.3 kPa (18.1 in. Hg) Approx. 1.6 volts
6.3 kPa (1.9 in. Hg) Approx. 4.4 volts