When Monitored and Set Condition:
WARNING: This page is about a different car, the 2004 Dodge Pickup and 2004 Dodge Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
When Monitored: During power-down and battery voltage greater than 10.4 volts.
Set Condition: The MAP sensor signal voltage goes below 2.35 volts with the key off for 5 seconds.