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: With the ignition in Unlock or On.
Set Condition: The Instrument Cluster detects that the BTSI Output circuit voltage is greater than 10.5 volts (Open) or less than 0.05 volts (Shorted).