Verona L6-2.5L (2005)
vacuum) and rpm changes. The MAP sensor converts these changes into a voltage output. The Engine Control Module (ECM) sends a 5-volt reference
voltage to the MAP sensor. As the intake manifold pressure changes, the output voltage of the MAP sensor also changes. A low voltage (high vacuum)
output of 1 to 2 volts is present at idle. A high voltage (low vacuum) output of 4.0 to 4.8 volts is present at wide open throttle. The MAP sensor is also
used under certain conditions to measure barometric pressure. This allows the ECM to make adjustments for altitude changes. The ECM uses the MAP
sensor for fuel delivery and ignition timing changes.
