DTC Parameters
WARNING: This page is about a different car, the 2002 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
Ignition is on.
DTC sets if the ECM detects that the cruise brake switch input or stop lamp switch input changed state (low-to-high or high-to-low) while the other switch did not change state for longer than 1.5 seconds for more than 20 consecutive times in one ignition cycle.