CONTENTS 1. PREFACE 2. PASSSIVE ACCSESS ENTRY FUNCTIONALITY 2.1. 2.2. 2.3. 2.4. 3. Door Unlocking Engine Start Engine Stop Door Locking (Push switch) ACTIVE ACCESS ENTRY FUNCTIONALITY 3.1. 3.2. 3.3. 3.4. 3.5. 4. Door Unlocking Engine Start Engine Stop Door Locking Trunk Open ENTRY SYSTEM OPTIONS 4.1. 4.2. 5. System Schematic Modules 4.2.1. FOB ECU 4.2.2. Entry System ECU SYSTEM CHARACTERISTICS 5.1. 5.2. 5.3. 6.
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.
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 SW Figure 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.
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. Start the engine. RF LF FOB 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.
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.
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.
4.Entry System Options 4.1.System Schematic OTHER ECUS FOB ENTRY SYSTEM ECU 125kHz Body Bus ECU ECU LF (>4Kbps) ECU Local Bus RF Tuner Tuner signal 4.2.Modules 315MHz RF (>2Kbps) 4.2.1.FOB ECU FOB ASIC RF Amp 315MHz Lock Unlock X Y 125kHz Trunk LF Amp Panic Z Emergency key (Transponder) 4.2.2.Entry System ECU ENTRY SYSTEM ECU Dr Door handle MCU Tuner signal Interior Antenna As Door handle Trunk Room1 Room2 Room3 Room1: Console Antenna Room2: Inst.
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: typ.3, however, it is depending on the type of the vehicle. max.4 (min.2) Interior Exterior Dr As Back Figure 6 Exterior antenna functionality: Unlock / lock doors. Open trunk. Activate / deactivate alarm system.
5.2.Exciter Locations Exterior exciters: Interior exciters: 3 doors 1 Center Console 2 Inst panel 3 Trunk Interior Exterior Dr As Bumper 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 Trunk 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 Operating supply current Stand-by current Operating ambient temperature Antenna direction Battery life Transmission：FSK Reception：ASK 2.5V ~ 3.3V (3.0V Battery) < 35mA < 10.0uA -10oC to +60oC 3-Dimension (X, Y, Z), to be considered 1.5 Years (Low battery indication is considered) 6.2.
FCC CAUTION 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.
