Component Description
WARNING: This page is about a different car, the 2004 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.
When the brake pedal is depressed, ASCD brake switch is turned OFF and stop lamp switch is turned ON. ECM detects the state of the brake pedal by this input of two kinds (ON/OFF signal).
Refer to AUTOMATIC SPEED CONTROL DEVICE (ASCD) in CRUISE CONTROL SYSTEMS - TITAN article for the ASCD function.