System Communication

When the vehicle is traveling more than 28 mph (45 km/h), an RF (radio frequency) band wave signal is transmitted from each tire pressure sensor to the TPMS control unit.
When the wheels rotate, the tire pressure sensors momentum is detected, switching them from sleep mode to normal function (awake) mode. After the vehicle is stationary for 5 minutes, the sensors switch from normal function mode back to sleep mode to extend their battery life.
Each tire pressure sensor has its own tire pressure sensor ID to prevent jamming by similar systems on other vehicles. After memorizing all the sensor IDs, the TPMS control unit recognizes only those specific signals.
A tire pressure sensor ID cannot be memorized automatically. The TPMS control unit knows which sensor ID belongs to each tire pressure sensor. This recurring ID confirmation prevents any confusion in the system as a result of normal tire rotation.
NOTE: Be careful not to bend the brackets on the TPMS control unit. Misalignment of the TPMS control unit could interfere with sending and receiving signals.

TPMS Control Unit (with an internal radio frequency antenna)

Fig 1: Identifying TPMS Control Unit
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Tire Pressure Sensor (sensor-transmitter with acceleration sensor)

Fig 2: Identifying Tire Pressure Sensor
Courtesy of AMERICAN HONDA MOTOR CO., INC.