Operational Description

FCC ID: GQ4-72T

Operational Description

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FCCID_3222628

Active & Passive Safety Technology Business Unit Certification for Toyota MY18 305B FSK 315 MHz TPM Sensor FCC ID: GQ4-72T Canada IC: 1470A-53T Model #: 335098-101, 335098-102 GENERAL DESCRIPTION The Toyota Tire Pressure Monitor Sensor (TPM Sensor) is a self-contained module that includes the valve stem and sensor ECU subsystems and is attached to the rim of each monitored tire. There are no hardwired electrical connections to the TPM Sensors. The TPM Sensor monitors the pressure and the temperature inside the tire and transmits the information to a TPM receiver located in a vehicle by way of an Ultra High Frequency (UHF) band wireless signal. The TPM Sensor will support a UHF simplex transmission that is able to transmit the data streams that satisfy the requirements listed in the following: The UHF transmitter nominal frequency shall be 314.98 +/- 0.035 MHz. The TPM Sensor shall allow the crystal oscillator a minimum of 2.2 ms stabilization time before UHF transmission begins. The UHF transmitter shall only be enabled during the time actual data is being transmitted or a carrier signal transmission has been requested through an LF Command. The UHF transmitter baud rate shall be set to 10,000 +/-1% bits per second over temperature range of -40°C to +120°C The UHF transmitter shall support Frequency Shift Keying (FSK) modulation with the duty cycle of 50 +/- 0 5%. Table 1 Sensor State Table State Name Vehicle State Frequency of Description Mode Transmission Park Stop(Parking) Single 1-FrameTPS Message at 200 Measures pressure / Consumer seconds interval. temperature./ tire centrifugal force /battery Voltage Local Z Msg 1-19 Run Single 4-Frame TPS Message at 16 Measures pressure / Consumer second intervals after tire centrifugal temperature./ tire force is detected during “Park” state. centrifugal force /battery Voltage Local Z Msg 20-36 Run Single 4-Frame TPS Message at 24 Measures pressure / Consumer second intervals after “ Local Z Msg temperature./ tire 1-19”. centrifugal force /battery Voltage Drive Run Single 4-FrameTPS Message at 64 Measures pressure / Consumer seconds interval during tire temperature./ tire centrifugal force is detected centrifugal force /battery Voltage Rest Stop After vehicle state moves to Measures pressure / Consumer “Stop”(No- tire centrifugal force), temperature./ tire Single 1-Frame TPS Message at 200 centrifugal force seconds intervals during 15minutes. /battery Voltage After that “Park” state is activated. Alert(Accidental Stop/Run 1 minute period of Measures pressure / Consumer Pressure Change) 4 second interval 8-Frame TPS temperature /battery Messages. Voltage Storage Stop/Run Single 4-Frame TPS Message upon Measures pressure / Consumer LF request. temperature./ tire centrifugal force /battery Voltage



Document Created: 2016-11-10 02:43:19
Document Modified: 2016-11-10 02:43:19
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