Circuit Description
WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
The Tire Pressure Monitor (TPM) system has a Radio Frequency (RF) transmitting pressure sensor in each wheel/tire assembly. As vehicle speed increases, centrifugal force closes the sensors internal roll switch which puts the sensors into drive mode. The remote control door lock receiver (RCDLR) receives and translates the data contained in each sensor's RF transmission into sensor presence, sensor mode, and tire pressure. Once vehicle speed is 32 km/h (20 mph), or greater, the RCDLR waits for the first sensor to go into drive mode then checks if all sensors have gone into drive mode.