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 on the ACM monitors the resistance of the Driver Squib 1 circuits.
Set Condition: The ACM detects an open circuit or high resistance in the Driver Squib 1 circuits.