Tire Pressure Monitoring System (TPMS)

This is an Indirect TPMS. This system uses the rotational speed of the tires in combination with signal analysis of the ABS sensor signals to determine if they are properly inflated. When a tire is under-inflated, its diameter (and consequently also its rotational speed) changes. By comparing the individual tires with each other it is possible to determine if one or more tires are under inflated.