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Alps Electric TWB1U773 User Manual

Passive entry system
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User's Manual
Passive Entry System
Model No.: TWB1U773
There is no User's Manual because this equipment will not be sold to end-
user directly.

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Summary of Contents for Alps Electric TWB1U773

  • Page 1 User’s Manual Passive Entry System Model No.: TWB1U773 There is no User’s Manual because this equipment will not be sold to end- user directly.
  • Page 2 CONTENTS PREFACE PASSSIVE ACCSESS ENTRY FUNCTIONALITY 2.1. Door Unlocking 2.2. Engine Start 2.3. Engine Stop 2.4. Door Locking (Push switch) ACTIVE ACCESS ENTRY FUNCTIONALITY 3.1. Door Unlocking 3.2. Engine Start 3.3. Engine Stop 3.4. Door Locking 3.5. Trunk Open ENTRY SYSTEM OPTIONS 4.1.

  • Page 3: Preface

    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. The FOB consists the following functionality for passive access and active access: •...

  • Page 4: Passsive Accsess Entry Functionality

    2.Passsive Accsess Entry Functionality A handle sw 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.

  • Page 5: Engine Start

    2.2.Engine Start • User operates the engine start 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. •...

  • Page 6: Door Locking (Push Switch

    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. •...

  • Page 7: Active Access Entry Functionality

    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 influence on the active entry system. 3.4.Door Locking Same functionality as the current one. 3.5.Trunk Open Same functionality as the current one.

  • Page 8: Entry System Options

    4.Entry System Options 4.1.System Schematic OTHER ECUS ENTRY SYSTEM ECU 125kHz Body Bus LF (>2Kbps) Local Bus RF Tuner Tuner signal 4.2.Modules 433.92MHz RF (>4Kbps) 4.2.1.FOB ECU ASIC Lock 433.92M Unlock Trunk Panic 125kHz Emergency key (Transponder) 4.2.2.Entry System ECU ENTRY SYSTEM ECU Dr Door handle Tuner signal...

  • Page 9: System Characteristics

    5.System Characteristics 5.1.Antenna Areas Exterior operating range: 0.8m to 1.5m Interior operating range: Only inside the car Number of the exterior exciters : typ.3, however, it is depending on the type of the vehicle. Number of the interior exciters: max.4 (min.2) Interior Exterior Back...

  • Page 10: Exciter Locations

    5.2.Exciter Locations Exterior exciters: 3 doors Interior exciters: 1 Center Console 2 Inst panel 3 Trunk Interior Exterior Bumper Figure 7 Antenna location can be different among of type of the vehicle (e.g. coupe, sedan, mini and stuff).

  • Page 11: Switch Input Locations (Door Handle

    5.3.Switch Input Locations (Door handle) There are some switches, for instance the door handle contact switch will be used as a triggering for unlocking and open the door. Switch inputs: 3 doors Trunk Figure 8 Switch inputs can be different among of type of the vehicle (e.g. coupe, sedan, mini and stuff).

  • Page 12: Electrical Characteristics

    6.Electrical Characteristics 6.1.FOB • ASK / FSK modulation Transmission：FSK Reception：ASK • Operating supply voltage 2.5V ~ 3.3V (3.0V Battery) • Operating supply current < 35mA • Stand-by current < 10.0uA • Operating ambient temperature C to +60 • Antenna direction 3-Dimension (X, Y, Z), to be considered •...
  • Page 13 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 and RSS-Gen of IC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and this device must accept any interference received, including interference that may cause undesired operation.

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