プジョー　3008の　車内ネットワーク（CAN)は・・・2　CAN等の通信機能についての文書（英文）

CAN等の通信機能について資料を探してみました。

PRESENTATION : AEE2010 EV MULTIPLEXED STRUCTURE

N.B. : (*) According to version.

1. Preamble

Multiplexing consists of sending several pieces of digital information between various items of electrical equipment, on a

single transmission channel made up of 2 wires, "CAN high" and "CAN low".

1.1. Definition of multiplexing

Multiplexing is a means of operating electrical equipment, needing a specially adapted electrical installation.

A multiplexed architecture consists of a single circuit, the bus, which connects all of the ECUs.

All the messages sent on this circuit comprise an "information" part and a part for "identification of the receiver" or

"identification of the transmitter".

N.B. : These messages are referred to as "datastreams".

Multiplexing uses the CAN communication protocol (Controller Area Network).

The associated architecture simplifies the harnesses and offers the customer new functions.

1.2. Advantage of multiplexing

Multiplexing allows :

Electrical harnesses to be simplified

The number of functions to be increased (for the same number of wires)

2. Electrical architecture

2.1. Presentation

The vehicle’s electrical architecture permits the following services :

Communication and operation of the various components of the system

ECU diagnostics, configuration or downloading

The electrical architecture consists of the following networks :

IS CAN, connecting all of the ECUs of the power train

DEPOL CAN, connecting the depollution systems

LAS CAN, linking the suspension systems

ADAS CAN, connecting the driving assistance systems

BODY CAN, connecting the vehicle’s bodywork systems

COMFORT CAN, creating the vehicle’s Man/Machine interface

INFO DIV CAN, linking the information and entertainment components

LIN

DIAG CAN, permitting downloading to certain ECUs of the CAN

DIAG ON CAN, permitting vehicle downloading, configuration and diagnostics


主な配線は上記のようになっている　

主に関係あるのは右下の8480.8410.などこれらは　CAN　INFO　DIV　と呼ばれるCANでつながっている（後述）

Components Description

AE00 (*) Electric steering lock

BSI1 Built-in systems interface

BSG1 (*) Generic fuse box 1 (trailer)

C001 Diagnostic socket

CV00 (*) Controls under the steering wheel

PSF1 Engine compartment connection board-fuse box

0004 Instrument panel

1012 (*) Centralised voltage maintaining system

1014 (*) Network voltage maintaining device

1020 (*) Alternator

1021 (*) Reversible alternator

1031 Battery charge status unit

1032 Electrical supplies protection and management unit

12B1 (*) Urea pump - gauge module

1283 (*) Fuel additive pump

13C1 (*) NOx sensor

1320 (*) Engine management ECU

1534 (*) Controlled air inlet module

1603 (*) Automatic gearbox control assembly

1630 (*) automatic gearbox ECU

1651 (*) Automatic gearbox electric control ECU

2610 (*) Left-hand headlamp

2615 (*) Right-hand headlamp

4746 Seat belts not fastened warning lamp control unit

5007 (*) Rain and brightness sensor

5015 Windscreen wiper motor

6036 (*) Driver’s door electric windows and exterior mirrors control pad

6133 (*) Rear left door electric window reduction motor (with anti-pinch)

6134 (*) Rear right door electric window reduction motor (with anti-pinch)

6136 (*) Front left door anti-pinch electric window motor

6137 (*) Front right door anti-pinch electric window motor

62B6 (*) Hands-full access ECU, right-hand side or rear

6290 (*) Boot movement control unit

63E1 (*) Front left seat pneumatic functions ECU

63E2 (*) Front right seat pneumatic functions ECU

63F8 Driver’s seat comfort ECU

6404 (*) Passenger´s rear view mirror memorisation and lighting control unit

6570 Airbags and pretensioners ECU

6606 (*) Dynamic headlamp beam height adjuster unit

7051 (*) Traction control "PLUS" control

7126 Electric power steering ECU

7215 (*) Multifunction screen

7531 (*) Panoramic visual assistance ECU

7500 (*) Parking assistance ECU

7571 (*) Vehicle distance alert ECU

7573 (*) Multifunction video camera

7800 Dynamic stability control ECU

8080 Air conditioning ECU

Rear air conditioning ECU (Fragrance diffuser) (*)

8364 (*) Front left seat heated pads and ventilation regulation ECU

8365 (*) Front right seat heated pads and ventilation regulation ECU

84C4 (*) Independent telematic unit

84C6 Multifunction control panel

84C7 (*) CD player

8410 (*) Audio system

8424 (*) Audio amplifier

8480 (*) Audio-navigation ECU

8602 (*) Intrusion alarm ECU

8605 (*) Intrusion alarm siren

(*) According to version

下記種類が流れている通信経路　うち関係するのは　INFO DIV CAN

IS CAN, connecting all of the ECUs of the power train

DEPOL CAN, connecting the depollution systems

LAS CAN, linking the suspension systems

ADAS CAN, connecting the driving assistance systems

BODY CAN, connecting the vehicle’s bodywork systems

COMFORT CAN, creating the vehicle’s Man/Machine interface

INFO DIV CAN, linking the information and entertainment components

LIN

DIAG CAN, permitting downloading to certain ECUs of the CAN

DIAG ON CAN, permitting vehicle downloading, configuration and diagnostics

一部抜粋

CAN INFO DIV (Entertainment Information CAN)

9.1. Presentation

The data transmission speed is 125 KBits/s.

The INFO DIV CAN is a "multimaster" network, in which each ECU permanently transmits information to the network as a

whole.

The transmission of the messages on the network takes place periodically and each ECU processes the information for whic

it has a use.

The network communication is managed and the "CAN +" electrical supply is established by the built-in systems interface.

The ECUs of the INFO DIV CAN have their own terminating resistor and are supplied according to the situation by the

"CAN+", the "ancillaries battery positive", the "central power switch positive" or the "ignition positive".

N.B. : The cutting of one of the two wires or a short circuit between the "INFO DIV CAN High" or "INFO DIV CAN Low

wires permits network communication, with the returning of fault information.

9.2. CAN INFO DIV (Entertainment Information CAN)

Key : diagram symbols .

Reference Description

BSI1 Built-in systems interface

0004 Instrument panel

7215 (*) Multifunction screen

7531 (*) Panoramic visual assistance ECU

7500 (*) Parking assistance ECU

84C4 (*) Independent telematic unit

84C6 Multifunction control panel

84C7 (*) CD player

8410 (*) Audio system

8424 (*) Audio amplifier

8480 (*) Audio-navigation ECU

(*) According to version

9.3. Location of the ECUs of the INFO DIV CAN

Reference Description

BSI1 Built-in systems interface

0004 Instrument panel

7215 (*) Multifunction screen

7531 (*) Panoramic visual assistance ECU

84C4 (*) Independent telematic unit

84C6 Multifunction control panel

84C7 (*) CD player

8410 (*) Audio system

8480 (*) Audio-navigation ECU

(*) According to version

Representation of the BODY CAN, INFO DIV CAN or COMFORT CAN

"V" Voltage (in volts)

"T" Time

CAN High voltage - CAN Low voltage = 3,6 - 1,4 V = 2,2 V (Logic level 0)

"G" CAN High.

"H" CAN Low.

Time scale :

Voltage : 2 Volts

Time : 1 millisecond

Test conditions :

Engine stopped

Ignition on

Results : Series of variable pulses represent the information circulating on the High line of the CAN.

The CAN Low signal is additional to the CAN High signal.

CAN Low voltage levels :

Low level : 1 V < U < 1,4 V

High level : 4,8 V < U < 5,6 V

CAN High voltage levels :

Low level : 0 V < U < 0,2 V

High level : 3,8 V < U < 4,2 V

9.1で書いているように　低速　125 KBits/s.の経路であり表に出ているところはない。

下記内容が　ODB２ポートのピンアサイン

16 way central diagnostic socket

Ways Allocation of the tracks of the connector

1 Ignition positive

2 Channel not connected

3 DIAGNOSTIC CAN high

4 Earth

5 Earth

6 IS CAN High

7 Line K (Engine management ; Automatic gearbox)

8 DIAGNOSTIC CAN low

9 Channel not connected

10 Channel not connected

11 Channel not connected

12 Channel not connected

13 Channel not connected

14 IS CAN Low

15 Channel not connected

16 Diagnostic socket ancillaries battery positive supply

ここには高速系のものしか流れていない

ただし、診断機など使う際には　DIAGNOS CAN を通しBSIから

必要なデータを送ることで診断機で確認はできるみたいです。

俗に言う　ODBⅡがこれですね。

CAN INFO DIV (Entertainment Information CAN)を調べていけば

RCCのコントロールがわかるということになります。

つづく