Tire Pressure Sensor/Transmitter
The system has four individual Tire Pressure Sensor/Transmitters, one mounted in each wheel. The valve stem is integral with the pressure sensor/transmitter. Each tire pressure Sensor/transmitter serves three functions:
- Valve stem to inflate and deflate the tire
- Measures tire pressure.
- Transmits the tire pressure value to the TPM Module.
The Tire Pressure Sensor/Transmitter unit consists of:
- Three-volt battery
- Pressure sensor
- Roll switch (speed activated)
- Reed switch (magnet activated)
- Transponder coil (125 kHz activated)
- Radio Frequency (RF) transmitter.
CAUTION:
Inflatable tire sealant for fixing a slow leak or flat tire should be avoided, as the sealant will clog the pressure-sensing hole in the transmitter.