Conditions for Setting the DTC
WARNING: This page is about a different car, the 2004 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.
The PCM detects a closed brake switch circuit, 12 volts, without changing for 2 seconds and the following events occur eight times:
The vehicle must stop and go from 3 km/h (2 mph) to 30 km/h (19 mph) ten times for two driving cycles before detecting a malfunction.