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: The ignition key on.
Set Condition: Ambient Temperature Sensor is less than.0392 of a volt at the PCM for 4.8 seconds. One Trip Fault. Three good trips to turn off the MIL.