Tire Pressure Sensor: Description and Operation
TPMS SENSORDESCRIPTION
1. Mode
1) Configuration State
^ All sensors should be in the High Line (Auto) state.
^ In High Line (Auto) configuration, sensor transmissions occur every 1 minute (nominal) and pressure is measured every 4 seconds.
2) Normal Delayed Auto State
^ This is High Line specific and is used for all HMC/KMC High Line applications.
^ In this state, the sensor will transmit for approx. 12 minutes before automatically entering storage state.
3) Storage Auto State
^ This state is a Low quiescent current state.
^ In this state;
a) Ignition off.
b) The sensor does not measure pressure / temperature / battery level.
c) The sensor will not transmit, unless requested to do so by the initiate command.
4) Alert State
^ The sensor automatically enters this state if the measured temperature exceeds 110°C and over temperature shutdown is likely.
^ In this state, pressure is measured every 4 seconds and RF data transmitted every 4 seconds.
^ The state lasts for 1 minute if it is pressure triggered.