When Monitored and Set Condition:
WARNING: This page is about a different car, the 2004 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.
When Monitored: Ignition on.
Set Condition: When the PCM recognizes Brake Switch No. 1 is stuck in the high/off position. One Trip Fault. Three good trips to turn off the MIL.