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Home >> Acura >> 2009 >> CSX Base, Standard >> Repair and Diagnosis >> Suspension >> Wheels & Tire System >> Tire Pressure Monitoring System >> System Description >> System Structure >> Tire pressure sensor

Tire pressure sensor

Each sensor is an integrated unit made up of the tire valve stem, a tire pressure sensor, and a transmitter. The unit is attached to the inside of the wheel, around the valve stem. The sensor transmits the internal tire information to the control unit once every 60 seconds when the vehicle speed exceeds 45 km/h (28 mph).When the TPMS control unit receives a tire pressure signal that is less than 175 kPa (1.8 kgf/cm2 , 25 psi) with 16 inch wheels, or 183 kPa (1.9 kgf/cm2 , 27 psi) with 17 inch wheels, the TPMS control unit then turns on the low tire pressure indicator.When that tire's pressure is increased tomore than 200 kPa (2.0 kgf/cm2 , 29 psi) with 16 inch wheels, or 210 kPa (2.1 kgf/cm2 , 30 psi) with 17 inch wheels, and the vehicle is driven above 45 km/h (28 mph) the transmitter sends the tire pressure signal to the control unit, and then the control unit turns the indicator off.

NOTE: Do not mix the TPMS tire pressure sensors or wheels with other TPMS types. Be sure to use the correct type sensors and wheels for this system. Sensor are active:
  • When the wheel rotates over 28 mph (45 km/h) the sensor detects the momentum, switches the sensor to the normal function mode.
  • The LF (low frequency) signal of the TPMS initializer tool makes the sensor active even though the vehicle is stopped. The tire pressure sensor goes into sleep mode when the acceleration sensor detects the wheel is stationary for 5 minutes or more continuously.
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