ALPS ALPINE WDU722 Vehicle Control Unit - Transmitter User Manual KEYLESS ENTRY UNIT

Alps Electric Co., Ltd. Vehicle Control Unit - Transmitter KEYLESS ENTRY UNIT

users manual

CONTENTS 1. PREFACE 2. PASSSIVE ACCSESS ENTRY FUNCTIONALITY 2.1. Door Unlocking 2.2. Engine Start 2.3. Engine Stop 2.4. Door Locking (Push switch) 3. ACTIVE ACCESS ENTRY FUNCTIONALITY 3.1. Door Unlocking 3.2. Engine Start 3.3. Engine Stop 3.4. Door Locking 4. ENTRY SYSTEM OPTIONS 4.1. System Schematic 4.2. Modules 4.2.1. FOB ECU 4.2.2. Entry System ECU 5. SYSTEM CHARACTERISTICS 5.1. Antenna Areas 5.2. Exciter Locations 5.3. Switch Input Locations (Door handle) 6. ELECTRICAL CHARACTERISTICS 6.1. FOB 6.2. Entry System ECU FCC WARNING NOTICE
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: • • • • • • • • • • • • • • • • Door unlocking / locking (however, only for request by means of switch operation) Trunk unlocking / locking (however, only for request by means of switch operation) LF decoding RF encoding Communication data encryption (cryptograph, anti-collision, rolling code and stuff) And the entry system ECU consists of the following functionality: Door unlocking / locking Trunk unlocking / locking Engine start (/ stop) LF encoding RF encoding Communication data encryption (cryptograph, anti-collision, rolling code and stuff) LF antenna unit control Communication with the node ECUs connected to the body bus (e.g. CAN, J1850, customer dependent bus) As a further function, both the FOB and the entry system ECU provides the following function: Learning mode for programming the manufacturing data and stuff Data locking and password protection Diagnostic (based upon ISO9141 if required)
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. Door Handle SWFigure 1 2.1.Door Unlocking • • • • • User pushes door handle sw. ECU sends LF-challenge via exterior antenna. FOB sends RF-response to the ECU. Door unlocking status is engaged. Doors are opened. RFLF FOB Figure 2
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. FOB RFLF Start the engine. Figure 3 2.3.Engine Stop • • • • User operates the engine stop knob. ECU communicates with the other ECU for engine start request. Engine controller ECU receives the request. Stop the engine Figure 4
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
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.
4.Entry System Options 4.1.System Schematic 125kHz FOB ENTRY SYSTEM ECUBody Bus ECU ECU ECULocal Bus RF (>4Kbps) 315MHz LF (>2Kbps) OTHER ECUS 4.2.Modules 4.2.1.FOB ECU 315MHz 125kHz Emergency key (Transponder) Panic Unlock Lock Y X ZASIC LF Amp RF Amp FOB 4.2.2.Entry System ECU Room2 Room3 LF ExciterLF ExciterInterior Antenna Room1: Console Antenna Room2: Inst. Antenna Room3: Luggage Antenna Dr : Driver Door Antenna As : Assist Door Antenna Back : Backdoor Antenna (Trunk Antenna) 125kHz Exterior Antenna 315MHz Back AsDrRoom1 LF ExciterLF ExciterLF ExciterLF ExciterRF Amp Local BusBody BusPush knob (Engine start knob) Dr Door handleAs Door handle Back Door handle MCU ENTRY SYSTEM ECU
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 Dr As Back Figure 6 Exterior antenna functionality: • • • • • Unlock / lock doors and trunk. Activate / deactivate alarm system. Activate immobilizer Interior antenna functionality: Deactivate immobilizer Engine start
5.2.Exciter Locations Exterior exciters: 3 doors Interior exciters: 1 Center Console 2 Inst panel 3 Luggage Back Interior Exterior Dr As Figure 7 Antenna location can be different among of type of the vehicle (e.g. coupe, sedan, mini and stuff).
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 Dr As Back Figure 8 Switch inputs can be different among of type of the vehicle (e.g. coupe, sedan, mini and stuff).
6.Electrical Characteristics 6.1.FOB • • • • • • • • • • • • ASK / FSK modulation Operating supply voltage 2.5V ~ 3.3V (3.0V Battery) Operating supply current < 35mA Stand-by current < 10.0uA Operating ambient temperature -10oC to +60oC Antenna direction 3-Dimension (X, Y, Z), to be considered Battery life 1.5 Years (Low battery indication is considered) 6.2.Entry System ECU Operating supply voltage 9.0V ~ 16.0V Operating supply current < 55mA Stand-by current < 4.0mA Operating ambient temperature -30oC to +80oC
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 (2) this device must accept any interference received, including interference that may cause undesired operation.

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