Continental E3HCP422 Body Control Module User Manual
- June 11, 2024
- Continental
Table of Contents
Continental E3HCP422 Body Control Module User Manual
General function description
System description
The FBS system is used for the Passive Start- and Entry-System (PASE), Remote
Keyless Entry (RKE) and Immobilization
It consists of
- HCP4 control unit with integrated FBS blocks (LF transmitter and RF transceiver)
- inductive LF antennas
- key
A vehicle unlock/lock request is triggered via capacitive touch sensors around the car (e.g. at the door handles). The car will be unlocked / locked after a successful authentication of the key outside the vehicle. The engine can be started by pushing the Start Stop Button at the center console after authentication of a valid key inside the passenger compartment.
Summarized the ECU allows comfortable operation of the vehicle (access, start
and immobilization) without using the key actively.
The vehicle communicates with the key inductively via ferrite- antennas, which
are placed around the car body (amount and position depending on the carline).
These ferrite antennas are driven by the LF-driver of the FBS system with 125
kHz.
Within the specified range the key responds via Radio Frequency (RF)
telegrams, which are received by the integrated RF-transceiver. If the key is
located on the right position, the RF transceiver transmits a RF telegram
(challenge).
The Key answers with a 2nd RF telegram (Response
The RF answer of the key are evaluated by the HCP4 control module.
With a valid key, dependent of the user request, doors are unlocked, locked or the engine is started after key authentication.
Block diagram LF driver
Power supply
The E3HCP422 is supplied via the vehicle battery
Positive: 7 module pins (KI30 2, KI30 2, KI30 3, KI30 4, KI30 4, KI30 6,
KI30 secure)
Negative: 2 module pins (KI31_1, KI312)
LF- driver DCDC converter
A step-up-converter (DC/DC) generates a stabilized voltage to supply the LF antenna driver CENDRIC during the LF transmission.
LF driver CENDRIC (short specification)
Applications: typ. Application circuit with charge & talk immobilizer
- PASE LF driver
- Immobilizer
Features
- Single driver current capability: 1.25 A peak
- LF frequency: 125 kHz
- Load modulation and charge and talk transponder receiver
- SPI interface to host pC
- Boost or Buck/Boost DCDC converter control (Vout max. 35 V)
- 8 door handle interfaces
- Autonomous polling and wake-up handling
- SLoc compliant current control
Installation Position Diagram
Technical Description RF
Bock diagram
Block diagram: The RF block consist of two antennas a switch for selecting one of them and a RF module with a Transmitter-Receiver integrated with Matching a SAW- Filter.
RF Communication
RKE communication:
For an RKE access the Key transmits a Telegram (Request)to the Car and is
answered with a Telegram form the Car to the Key (Challenge) followed by
another Telegram form the Key (Response) the communication is ended with the
last Telegram (Acknowledge)
If the communication is not successful or interrupted, it is retried two more times on the other channels.
PASE communication
During a PASE event e.g. a door handle is pulled the communication is
triggered with LF and the Key sends a Telegram to the Car (Challenge) and is
answered with a Telegram (Response)
RF Parameter
Antenna type: Two PCB monopole antenna
Nominal supply voltage: 13.5V±0.5V
Operating voltage range: 9 V … 16 V
Modulation: 2FSK
TRX 315 MHz RKE Japan
- Centre frequency, channel A: 314.0MHz
- Centre frequency, channel B: 314.4MHz
- Centre frequency, channel C: 314.9MHz
- Used Channels RX /TX: A, B, C
- Frequency deviation: Centre frequency ± 10 kHz
- Data rate: 9.6 kbps
- Tx Power: Japan
TRX 315 MHz PASE Japan
- Centre frequency, channel A: 314.0MHz
- Centre frequency, channel B: 314.4MHz
- Centre frequency, channel C: 314.9MHz
- Used Channels RX /TX: A, B, C
- Frequency deviation: Centre frequency ± 25 kHz
- Data rate: 25 kbps
- Tx Power: Japan
TRX 433 MHz RKE EU
- Centre frequency, channel A: 433.47MHz
- Centre frequency, channel B: 433.92MHz
- Centre frequency, channel C: 434.37MHz
- Used Channels RX /TX: A, B, C
- Frequency deviation: Centre frequency ± 10 kHz
- Data rate: 9.6 kbps
- Tx Power: EU
TRX 433 MHz PASE EU
- Centre frequency, channel A: 433.47MHz
- Centre frequency, channel B: 433.92MHz
- Centre frequency, channel C: 434.37MHz
- Used Channels RX /TX: A, B, C
- Frequency deviation: Centre frequency ± 25 kHz
- Data rate: 25 kbps
- Tx Power: EU
TRX 433 MHz RKE US and Canada
- Centre frequency, channel A: 433.47MHz
- Centre frequency, channel B: 433.92MHz
- Centre frequency, channel C: 434.37MHz
- Used Channels RX /TX: A, B, C
- Frequency deviation: Centre frequency ± 10 kHz
- Data rate: 9.6 kbps
- Tx Power: US
TRX 433 MHz PASE US and Canada
- Centre frequency, channel A: 433.47MHz
- Centre frequency, channel B: 433.92MHz
- Centre frequency, channel C: 434.37MHz
- Used Channels RX /TX: A, B, C
- Frequency deviation: Centre frequency ± 25 kHz
- Data rate: 25 kbps
- Tx Power: US
TRX 433 MHz RKE Korea
-
Centre frequency, channel B: 433.92MHz
-
Used Channels RX /TX: B
-
Frequency deviation: Centre frequency ± 10 kHz
-
Data rate: 9.6 kbps
-
Tx Power: Korea
TRX 433 MHz PASE Korea -
Centre frequency, channel B: 433.92MHz
-
Used Channels RX /TX: B
-
Frequency deviation: Centre frequency ± 25 kHz
-
Data rate: 25 kbps
-
Tx Power: Korea
Operating temperature: -40 to +85
RF RKE / PASE TX transmission Description
RKE
Scenario 1: Challenge access
As part of the RKE communication the E3HCP422 transmits its longest packet this can be trigger via the Switch configuration see Tables in chapter:
Operation description of the RF measurement setup
Telegram description:
Total length of the RKE Challenge Auth1 telegram:
RF_PHY_Frame2: 27bit
RF DLL Frame2: 8bit
DLL Payload: 128bit
Total: 163 bits (16,98ms @ 9,6kbs)
PASE
Scenario 2: Challenge access or go
During a PASE access or go scenario the E3HCP422 transmits the longest packet.
This can be trigger via the Switch configuration see Tables in chapter:
Operation description of the RF measurement setup
Telegram description:
E3HCP422- >Key
Total length of the Pase Challenge Service Key telegram:
RF_ PHY Frame2: 27bit
RF DLL Frame2: 8bit
DLL Payload: 176bit
Total: 211 bits (8.44ms @ 25kbs)
Label USA/ Canada
Continental
E3HCP422
FCCID: KR5E3HCP422
IC: 7812D- E3HCP422
Owner Manual Canada
IC:7812D-E3HCP422
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.
Owner Manual USA
FCC ID: KR5E3HCP422
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
- this device may not cause harmful interference, and
- this device must accept any interference received, including interference that may cause undesired operation.
Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.
Radiofrequency radiation exposure Information: This equipment complies with FCC and IC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance of 20 cm between the radiator and your body. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.
EU
This equipment should be installed and operated with minimum distance of 20 cm
between the radiator and your body
Maximum Output Powers:
TX Power: EU
433 MHz = 8.51dBm (EIRP)
125 kHz = 2.96dBm (EIRP)
TX Power: US & Canada
433 MHz = -17.95 dBm (EIRP mean)
125 kHz = -0.23 dBm (EIRP mean)
TX Power: Japan
315 MHz = -2dBm (50 Ohm, conducted)
