Low Tire Pressure Warning Indicator

The low tire pressure warning indicator alerts the driver that one or more of the tires on the vehicle has low tire pressure or is flat. The TPMS consists of a tire pressure sensor and a transmitter located on each tire. The smart junction box (SJB) receives the data from each tire and transmits the data over the communication network to the instrument cluster to indicate whether the low tire pressure warning indicator telltale should be illuminated, flashed, or turned off.