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Document No. Title Page

5AX000XX00 Product Specification

Background

Passive Entry System

FORMAT NO. FIRMWARE_A(VER 0.01)

CONTENTS

1. PREFACE................................................................................................................................. 4

2. PASSSIVE ACCSESS ENTRY FUNCTIONALITY..................................................................... 5

2.1. Door Unlocking ..............................................................................................................................................5

2.2. Engine Start ...................................................................................................................................................6

2.3. Engine Stop....................................................................................................................................................6

2.4. Door Locking (Push switch) ..........................................................................................................................7

3. ACTIVE ACCESS ENTRY FUNCTIONALITY............................................................................ 8

3.1. Door Unlocking ..............................................................................................................................................8

3.2. Engine Start ...................................................................................................................................................8

3.3. Engine Stop....................................................................................................................................................8

3.4. Door Locking..................................................................................................................................................8

4. ENTRY SYSTEM OPTIONS...................................................................................................... 9

4.1. System Schematic.........................................................................................................................................9

4.2. Modules..........................................................................................................................................................9

4.2.1. FOB ECU................................................................................................................................................9

4.2.2. Entry System ECU..................................................................................................................................9

5. SYSTEM CHARACTERISTICS ............................................................................................... 10

5.1. Antenna Areas .............................................................................................................................................10

5.2. Exciter Locations .........................................................................................................................................11

5.3. Switch Input Locations (Door handle, Touch sensor)................................................................................12

6. ELECTRICAL CHARACTERISTICS ....................................................................................... 13

6.1. FOB..............................................................................................................................................................13

6.2. Entry System ECU.......................................................................................................................................13

Summary of content (12 pages)

PAGE 1
Document No. 5AX000XX00 Title Page Product Specification Background Passive Entry System CONTENTS 1. PREFACE................................................................................................................................. 4 2. PASSSIVE ACCSESS ENTRY FUNCTIONALITY..................................................................... 5 2.1. 2.2. 2.3. 2.4. 3. Door Unlocking ...............................................................................................................
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Document No. 5AX000XX00 Title Page Product Specification Background Passive Entry System 1.Preface This document describes the requirements and operation of the Passive Entry System. However, this document is especially for the Entry system ECU (acronym for Electric Control Unit) and the FOB.
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Document No. 5AX000XX00 Title Page Product Specification Background Passive Entry System 2.Passsive Accsess Entry Functionality A proximity sensor located on, for example the door handles, mirrors and trunk lid will be used for proximity check if user is in neighborhood of the vehicle. The switch input will trigger for unlocking and open the doors and trunk. Proximity sensor Switch input (door handle) Figure 1 2.1.
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Document No. 5AX000XX00 Title Page Product Specification Background Passive Entry System 2.2.Engine Start • • • • • • User pushes / operate the engine start button / knob. ECU sends LF-challenge via interior antenna. FOB sends RF-response to the ECU. Immobilizer ECU receives and authorize the response. Engine controller ECU receives the authorization for engine strat. Start the engine. RF LF FOB Figure 3 2.3.Engine Stop • • • • User pushes / operate the engine stop button / knob.
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Document No. Title 5AX000XX00 Page Product Specification Background Passive Entry System 2.4.Door Locking (Push switch) • • • • • • User closes the door and pushes the switch (sensing of door locking switch). ECU sends LF-challenge via exterior antenna. FOB sends RF-response to the ECU. Door locking status is engaged. Doors are locked. (Indicates the door locking status by means of Flasher / Buzzer or stuff) Figure 5 FORMAT NO. FIRMWARE_A(VER 0.
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Document No. Title 5AX000XX00 Page Product Specification Background Passive Entry System 3.Active Access Entry Functionality 3.1.Door Unlocking Same functionality as the current one. 3.2.Engine Start This function does not effect on the active entry system. 3.3.Engine Stop This function does not have influencei on the active entry system. 3.4.Door Locking Same functionality as the current one. FORMAT NO. FIRMWARE_A(VER 0.
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Document No. Title Page 5AX000XX00 Product Specification Background Passive Entry System 4.Entry System Options 4.1.System Schematic OTHER ECUS FOB ENTRY SYSTEM ECU Body Bus 125kHz LF (>2Kbps) ECU3 312.125 MHz RF (>4Kbps) ECU2 ECU1 Local Bus 4.2.Modules 4.2.1.FOB ECU FOB 312.125 MHz Y 125kHz ASIC RF Amp Lock Unlock X Trunk LF Amp Key lock Z Emergency key (Transponder) 4.2.2.Entry System ECU ENTRY SYSTEM ECU MCU FT handle 312.
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Document No. Title 5AX000XX00 Page Product Specification Background Passive Entry System 5.System Characteristics 5.1.Antenna Areas Exterior operating range: Interior operating range: 0.8m to 1.5m Only inside the car Number of the exterior exciters : Number of the interior exciters: max. 5 (min. 2), however, it is depending on the type of the vehicle. 1 (1-Dimmension) or 2 (2-Dimension required) Interior Exterior FT BT Figure 6 Exterior antenna functionality: • Unlock / lock doors and trunk.
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Document No. Title 5AX000XX00 Page Product Specification Background Passive Entry System 5.2.Exciter Locations Exterior exciters: 2 doors and 1 trunk Interior exciters: 1 driver’s sheet 2 column / shift lever (X-Y 2-Dimension) Interior Exterior FT BT Figure 7 Antenna location can be different among of type of the vehicle (e.g. coupe, sedan, mini and stuff). FORMAT NO. FIRMWARE_A(VER 0.
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Document No. Title 5AX000XX00 Page Product Specification Background Passive Entry System 5.3.Switch Input Locations (Door handle, Touch sensor) There are some kind of sensors, for instance the door handle contact switch and touch sensor, will be used as a triggering for unlocking and open the door. Switch inputs: 2 doors and 1 trunk FT BT Figure 8 Switch inputs can be different among of type of the vehicle (e.g. coupe, sedan, mini and stuff). FORMAT NO. FIRMWARE_A(VER 0.
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Document No. Title 5AX000XX00 Page Product Specification Background Passive Entry System 6.Electrical Characteristics 6.1.FOB • • • • • • ASK / FSK modulation Operating supply voltage Operating supply current Stand-by current Operating ambient temperature Antenna direction 2.1V to 4.0V (3.0V Battery) < 7mA < 10.0uA -20oC to +60oC 3-Dimension (X, Y, Z), to be considered • Battery life 2 Years (Low battery indication is considered) 6.2.
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Document No. 5AX000XX00 Title Page Product Specification Background Passive Entry System FCC WARNING Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. NOTICE This device complies with Part 15 of the FCC Rules.