ASCD Brake Switch
WARNING: This page is about a different car, the 2011 Nissan Leaf. However, it is still accessible from the selected car via links, so may be relevant.
The ASCD brake switch is installed to the brake pedal bracket. The switch detects state of the brake pedal and transmits an ON/OFF signal to VCM.
The contact of the ASCD brake switch is usually closed. When the brake pedal is depressed, it opens to disconnect the circuit, and shut off the output voltage. This constitutes an ASCD brake switch signal.