GQ4-48TTire Pressure Sensor

TRW Automotive Legal name here October 24, 2011 TEE 24175 Research Dr. Farmington Hills, MI 48335-2642 Tel 248.478.7210 Fax 248.699.4241 RE: Certification for GM Aftermarket 315MHz TPM Sensor Transmitter Model #: 221849-104 FCC ID: GQ4-48T Canada IC: 1470A-29T USER’S MANUAL & COMPLIANCE STATEMENT The TPM Transmitter is sold as part of a vehicle by the retail automobile dealers and as such has no separate manual. This exhibit is provided electronically to the vehicle manufacturer after submission. The compliance statement for the TPM Transmitter (FCC ID: GQ4-48T) will be integrated by the OEM into the vehicle owner’s manual. It will read: This device complies with Part 15 of the FCC Rules and with Industry Canada license-exempt RSS standard(s). Operation is subject to the following two conditions: 1. This device may not cause harmful interference. 2. This device must accept any interference received, including interference that may cause undesired operation. Le present appareil est conforme aux CNR d’Industrie Canada applicable aux appareils radio exempts de licence. L’exploitation est autorisee aux deux conditions suivantes: 1. L’appareil ne doit pas produire de brouillage. 2. L’utilisateur de l’appareil doit accepter tout brouillage radioelectrique subi, meme si le brouillage est susceptible d’en compromettre le fonctionnement. WARNING: Changes or modifications not expressively approved by TRW Automotive U.S. LLC could void the user’s authority to operate the equipment.

December 1, 2011 Certification and Engineering Bureau Industry Canada 3701 Carling Avenue, Bldg. 94 Ottawa, Ontario K2H 8S2 Re: Certification for TRW Transmitter Model/PN(s): 221849-104 FCC ID: GQ4-48T IC: 1470A-29T Please find enclosed application materials for certification of TRW Transmitter. We tested the device and found it to comply with RSS-GEN/102/210. The product is identified by: IC: 1470A-29T If there are any questions, suggestions, etc., regarding the application or testing performed, please contact me at the above address or call 734-483-4211, fax 734-647- 2106; e-mail: [email protected]. Sincerely, Valdis V. Liepa Research Scientist December 1, 2011 Federal Communications Commission Equipment Approval Services P.O. Box 358315 Pittsburgh, PA 15251-5315 Re: Certification for TRW Transmitter Model/PN(s): 221849-104 FCC ID: GQ4-48T IC: 1470A-29T Please find enclosed application materials for certification of TRW Transmitter. We tested it and found it to comply with FCC Part 15. If there are any questions regarding the application or testing performed, please contact me at the above address or call 734-483-4211, fax 734-647-2106, or e-mail [email protected]. Sincerely, Valdis V. Liepa Research Scientist

Re: Certification for TRW Transmitter FCC ID: GQ4-48T IC: 1470A-29T REQUEST FOR CONFIDENTIALITY Pursuant to FCC 47 CRF 0.457(d) and 0.459 and IC RSP-100, Section 10, TRW requests that a part of the subject application be held confidential. TRW has spent substantial effort in developing this product and it is one of the first of its kind in industry. Having the subject information easily available to "competition" would negate the advantage they have achieved by developing this product. Not protecting the details of the design will result in financial hardship. Type of Confidentiality Requested Exhibit Short Term Permanent (1) ID Label & Location Short Term Permanent (3) External Photos Short Term Permanent 1 (4) Block Diagram Short Term Permanent (5) Schematics Short Term Permanent (7) Test Setup Photos Short Term Permanent (8) User’s Manual Short Term Permanent (9) Internal Photos Short Term Permanent (10) Parts List & Placement Short Term Permanent (11) RF Exposure Short Term Permanent (12) Description of Operation 1. Block Diagram includes internal oscillator frequency information that the manufacturer considers to be proprietary. Permanent Confidentiality: TRW requests the exhibits listed above as permanently confidential be permanently withheld from public review. Short-Term Confidentiality (FCC Only): TRW requests the exhibits selected above as short term confidential be withheld from public view for a period of 45 days from the date of the Grant of Equipment Authorization and prior to marketing. If there are any questions regarding this request, please contact me at the above address or call 734-483-4211, fax 734-647-2106 or e-mail [email protected]. Sincerely, Valdis V. Liepa, Research Scientist University of Michigan

TRW Automotive Legal name here October 24, 2011 TEE 24175 Research Dr. Farmington Hills, MI 48335-2642 Tel 248.478.7210 Fax 248.699.4241 RE: Certification for GM Aftermarket 315MHz TPM Sensor Transmitter Model #: 221849-104 FCC ID: GQ4-48T Canada IC: 1470A-29T FCC/IC IDENTIFIER AND MODEL NUMBER Please see Figure 1 for the FCC/IC Identifier location on 221849-104. Figure 1: Identifier Location

TRW Automotive Legal name here October 26, 2011 TEE 24175 Research Dr. Farmington Hills, MI 48335-2642 Tel 248.478.7210 Fax 248.699.4241 RE: Certification for GM Aftermarket ASK 315MHz TPM Sensor Model #: 221849-104 FCC ID: GQ4-48T Canada IC: 1470A-29T GENERAL DESCRIPTION The TPM Sensor is an RF transmitting device that contains an integrated tire valve stem that is mounted in the valve hole of each of the wheel rims on the vehicle. The sensor transmits the pressure and temperature inside the tire, as well as the battery voltage status of the transmitter. Each sensor’s unique tire identification code (ID) is also sent with each transmission. The sensor will transmit at 315MHz periodically when the vehicle speed is ~20mph. The vehicle speed is determined from an accelerometer that is contained within the sensor. The sensor will also transmit data if a change in the air pressure occurs while the vehicle is stationary or in a rolling state. The transmissions from each sensor have a random delay to ensure that RF signals from each tire will not interference due to simultaneous transmissions. The RF transmission format is ASK (Amplitude Shift Keying) Manchester encoded at 315 MHz. Description of Operations Mode of Operation Explanation Frequency of Transmission Storage Mode No transmission. Measures temperature, pressure, & battery voltage 16 words when activation occurs with TPM diagnostic tool for LF Learn Normal Mode Measures temperature, pressure, acceleration, & battery voltage. Transmits periodically. Enters this mode from storage when pressure goes above threshold.  6 words every 60seconds  16 words when activation occurs with TPM diagnostic tool for LF Learn Alert Mode Transmits when significant pressure delta detected 6 words whenever pressured delta > threshold

University of Michigan Radiation Laboratory FCC Part 15, IC RSS-210/Gen - Test Report No. 417124-615 Page 1 of 13 The University of Michigan Radiation Laboratory 3228 EECS Building Ann Arbor, MI 48109-2122 Tel: (734) 764-0500 Fax: (734) 647-2106 Measured Radio Frequency Emissions From TRW Inc. Transmitter FCC ID: GQ4-48T IC: 1470A-29T Test Report No. 417124-615 December 1, 2011 Copyright © 2011 For: TRW Inc. 24175 Research Drive Farmington Hills, MI 48335-2642 Contact: Jeff Rochette [email protected] Phone: (248) 699-4235 Fax: (248) 699-4241 Testing supervised by: Measurements made by: Valdis V. Liepa Report Approved by:__________________________ Valdis V. Liepa Test report written by: Joseph D. Brunett Research Scientist Summary Tests for compliance with FCC Regulations, CFR 47, Part 15 and with Industry Canada RSS-210/Gen, were performed on a TRW, FCC ID: GQ4-48T, IC: 1470A-29T. This device under test (DUT) is subject to the rules and regulations as a Transmitter. In testing completed on November 15, 2011, the DUT tested met the allowed specifications for radiated emissions by 8.8 dB. Conducted emissions are not subject to regulation as the DUT is powered by a 3 VDC battery. University of Michigan Radiation Laboratory FCC Part 15, IC RSS-210/Gen - Test Report No. 417124-615 Page 2 of 13 Table of Contents 1. Introduction ...................................................................................................................................... 3 2. Equipment Used ............................................................................................................................... 3 3. Device Under Test ........................................................................................................................... 4 3.1 Description & Block Diagram .............................................................................................. 4 3.2 Variants & Samples .............................................................................................................. 4 3.3 Modes of Operation .............................................................................................................. 4 3.4 Exemptions ........................................................................................................................... 4 3.5 EMC Relevant Modifications ............................................................................................... 4 4. Emissions Limits .............................................................................................................................. 5 4.1 Radiated Emissions Limits .................................................................................................... 5 5. Measurement Procedures ................................................................................................................. 6 5.1 Semi-Anechoic Chamber Radiated Emissions ...................................................................... 6 5.2 Outdoor Radiated Emissions ................................................................................................. 6 5.3 Radiated Field Computations ................................................................................................ 6 5.4 Indoor Power Line Conducted Emissions ............................................................................. 6 5.5 Supply Voltage Variation ...................................................................................................... 7 6. Test Results ...................................................................................................................................... 7 6.1 Radiated Emissions ............................................................................................................... 7 6.1.1 Correction for Pulse Operation ......................................................................................... 7 6.1.2 Emission Spectrum ........................................................................................................... 7 6.1.3 Emission Bandwidth ......................................................................................................... 7 6.1.4 Supply Voltage and Supply Voltage Variation ................................................................. 7 6.2 Conducted Emissions ............................................................................................................ 7 University of Michigan Radiation Laboratory FCC Part 15, IC RSS-210/Gen - Test Report No. 417124-615 Page 3 of 13 1. Introduction This TRW Transmitter was tested for compliance with FCC Regulations, Part 15, adopted under Docket 87-389, April 18, 1989 as subsequently amended, and with Industry Canada RSS-210/Gen, Issue 7, June 2007. Tests were performed at the University of Michigan Radiation Laboratory Willow Run Test Range following the procedures described in ANSI C63.4-2003 "Methods of Measurement of Radio-Noise Emissions from Low-Voltage Electrical and Electronic Equipment in the Range of 9 kHz to 40 GHz". The Site description and attenuation characteristics of the Open Site facility are on file with FCC Laboratory, Columbia, Maryland (FCC Reg. No: 91050) and with Industry Canada, Ottawa, ON (File Ref. No: IC 2057A-1). 2. Equipment Used The test equipment commonly used in our facility is listed in Table 2.1. Except where indicated as a pre- test, monitoring, or support device; all equipment listed below is a part of the University of Michigan Radiation Laboratory (UMRL) quality system. This quality system has been established to ensure all equipment has a clearly identifiable classification, calibration expiry date, and that all calibrations are traceable to national standards. Table 2.1 Test Equipment. Test Instrument Used Manufacturer/Model Q Number Spectrum Analyzer (9kHz-26GHz) Hewlett-Packard 8593E, SN: 3412A01131 HP8593E1 Spectrum Analyzer (9kHz-6.5GHz) Hewlett-Packard 8595E, SN: 3543A01546 JDB8595E Power Meter Hew…

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