Description

FCC ID: GQ4-70T

Operational Description

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FCCID_2201535

TRW Automotive February 03, 2014 GE 24175 Research Dr. Farmington Hills, MI 48335-2642 Tel 248.478.7210 Fax 248.699.4241 RE: Certification for Chrysler MY2014 KL/DS Sensor FCC ID: GQ4-70T Canada IC: 1470A-51T Model #: 231008, 231674 (2 variants) GENERAL DESCRIPTION This TPM sensor is a transmitter device with tire valve, which is mounted in the valve hole of the wheel rim and transmits the pressure and temperature inside the tire, the battery voltage of the transmitter, and the tire identification code (ID) at normal and abnormal condition with the radio wave (RF) that conforms to the used country. Also this device has a delay of the transmission time so that the RF signal from each tire will not interfere due to the simultaneous transmission. The transmitter device also has a Low Frequency (LF) receiver. This receiver supports Low Frequency (LF) magnetic field communications allowing the changing of measurement/monitoring states of the transmitter by commands sent via the TPM diagnostic tool. The RF signal operates at 434MHz and uses FSK Manchester code modulation. This sensor transmits 4 RF packets as defined in the table below. TRW Automotive US LLC

Description of Operations Mode of Explanation Frequency of Transmission Operation • Transmit 4 words when No transmission. Measures pressure, temperature & Off Mode activation occurs with TPM battery voltage. diagnostic tool Measures pressure, motion. Temperature & battery • Transmit 4 words when voltage is measured prior to transmission. Enters this activation occurs with TPM mode/state when diagnostic tool. 1. Pressure goes above pressure threshold in Off Park Mode • Transmit 4 words when delta Mode or Pressure is seen. 2 ASK 2. No motion is detected for 15 minutes in Interim words followed by 2 FSK Mode. words Measures pressure, motion, temperature, battery voltage • Transmits 36 valid messages, Enters this mode/state when 4 words /message. The first 18 1. When Motion is detected while in Park mode. messages will transmit every 2. When motion is detected while in Interim mode 16 seconds, the next 18 Local Z Mode within 15 minutes and Local Z is not complete. messages will transmit every 24 seconds • 4 words when activation occurs with TPM diagnostic tool • Transmit 4 words every 64 Measures pressure, motion, temperature, battery voltage sec. Enters this state when • Transmit 4 words when delta Drive Mode 1. LocalZ has completed. pressure is seen. 2. When motion is detected while in Interim mode • Transmit 4 words when within 15 minutes activation occurs with TPM diagnostic tool • Transmit 4 words when Measures pressure, motion. Temperature & battery activation occurs with TPM voltage is measured prior to transmission. Enters this diagnostic tool. mode/state when Interim Mode • Transmit 4 words when delta 1. No motion is detected while in LocalZ or Drive Pressure is seen. . 2 ASK mode. words followed by 2 FSK words TRW Automotive US LLC


Document Created: 2014-02-24 13:00:11
Document Modified: 2014-02-24 13:00:11
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