HELLA and KGaA 009768T Keyless Car Entry User Manual

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Document ID	1028893
Application ID	yKHf6nt4CXbAD+bQh6f7TA==
Document Description	User Manual
Short Term Confidential	No
Permanent Confidential	No
Supercede	No
Document Type	User Manual
Display Format	Adobe Acrobat PDF - pdf
Filesize	246.81kB (3085077 bits)
Date Submitted	2008-11-12 00:00:00
Date Available	2008-11-12 00:00:00
Creation Date	2008-10-24 11:35:02
Producing Software	Acrobat Distiller 9.0.0 (Windows)
Document Lastmod	2008-11-12 14:00:15
Document Title	Microsoft Word - GM EPSILON II - Annex No 5 _Functional description-User manual_
Document Creator	Adobe Acrobat 9.0.0
Document Author:	Andreas Morsbach

Annex No.5
Page 1 of 8
Functional description / User manual
5FA 009 768-40 / -70
5FA 010 007-30 / -40 / -50 / -60
5FA 010 381-30
1
September 12, 2008
Confidential.The contents may only be passed on, used or made known with our express permission. All rights reserved.
5FA 010 007-30 /-40 /-50 /-60
5FA 010 381-30
5FA 009 768-40 /-70
Hella
Passive Entry Passive Start System (PEPS)
for General Motors
User Identification Device (UID)
2
trunk
separation
The interior antenna IN is transmitting the LF
Data and a carrier signal, which can be
recognized and evaluated by quantity (RSSImeasurement) by the UID. The other two
interior antennas IN and TRUNK transmit two
additional carrier signals sequential.
If the magnetic field strength of one of these
transmits is high enough (a certain border is
reached) then the UID authenticates the
system to start the vehicle.
If the magnetic field strength of all antenna
transmits are too low (the field strength
border is not reached, maybe the UID is
laying outside or is held 10 cm outside the
vehicle) the car won’t start.
Start:
A Person with the UID inside of the vehicle is
pressing the Start-Stop-Switch. The StartStop-Switch activates the complete Passive
Start protocol:
September 12, 2008
Confidential.The contents may only be passed on, used or made known with our express permission. All rights reserved.
UID
3 interior LF antennas
PEPS ECU
inside detection
Functional Description of Passive Start
Hella PEPS for GM
3
UID
3 interior LF antennas
3 exterior LF antennas
PEPS ECU
outside detection
appr. 180cm
trunk
separation
outside rear
detection
The door handle antenna is transmitting LF
data and a carrier signal, which can be
recognized and evaluated by quantity (RSSImeasurement) by the UID.
If the magnetic field strength is high enough
(a certain border is reached) the UID stays
“awake” for additional LF communication by
the other antennas driven sequentially.
The additional LF communication guaranties
the functionality, that only the valid key
OUTSIDE the vehicle authenticates the
system to unlock the car passively.
If the magnetic field strength is not high
enough (e.g. the UID is too far away from the
vehicle, the border is not reached), the UID
shuts down again and waits for the next LF
Data. The vehicle is still locked.
Entry:
A Person with the UID approaches the
locked vehicle. If he graps the door handle a
micro switch is activated and the complete
Passive Entry Protocol is started:
September 12, 2008
Confidential.The contents may only be passed on, used or made known with our express permission. All rights reserved.
appr. 180cm
inside detection
outside detection
Functional Description of Passive Entry
Hella PEPS for GM
4
Radio
Frequency
Amplifier module
September 12, 2008
INTERIOR LF antenna
INTERIOR LF antenna
INTERIOR LF antenna
transmitting frequency
f = 314,9 MHz
UID
transmitting frequency
f = 125kHz
Confidential.The contents may only be passed on, used or made known with our express permission. All rights reserved.
Body
Control
Module
Electrical Control Unit
Passive
Entry
Passive
Start
Functional Description of Procedure, Hella Devices for Passive Start
Hella PEPS for GM
5
Radio
Frequency
Amplifier module
September 12, 2008
EXTERIOR LF antenna
EXTERIOR LF antenna
EXTERIOR LF antenna
INTERIOR LF antenna
INTERIOR LF antenna
INTERIOR LF antenna
transmitting frequency
f = 314,9 MHz
UID
transmitting frequency
f = 125kHz
Confidential.The contents may only be passed on, used or made known with our express permission. All rights reserved.
Body
Control
Module
Electrical Control Unit
Passive
Entry
Passive
Start
Functional Description of Procedure, Hella Devices for Start
Hella PEPS for GM

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Creator Tool                    : Adobe Acrobat 9.0.0
Format                          : application/pdf
Title                           : Microsoft Word - GM EPSILON II - Annex No 5 _Functional description-User manual_
Creator                         : Andreas Morsbach
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