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, battery voltage greater than 10 volts, Cruise is learned and powered, and the brake is not pressed.
Set Condition: The PCM recognizes an open or short to ground in the speed control vacuum solenoid control circuit.