Alfa Romeo 159 1.8 Fino a 12/05 – CAN CONNECTION LINES – – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION

WIRING DIAGRAM - CAN CONNECTION LINES - Alfa Romeo 159 1.8 Fino a 12/05

CAN CONNECTION LINES - WIRING DIAGRAM Alfa Romeo 159 1.8 Fino a 12/05

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COMPONENTS - CAN CONNECTION LINES - Alfa Romeo 159 1.8 Fino a 12/05

Component code	Description	Reference to the operation
B002	JUNCTION UNIT UNDER DASHBOARD
B099	MAXIFUSE BOX ON BATTERY
D020	DASHBOARD/REAR COUPLING	-
D021	DASHBOARD/AIR CONDITIONING-HEATER COUPLING	-
D030	DRIVER'S FRONT DOOR COUPLING	-
D031	PASSENGER FRONT DOOR COUPLING	-
D047	CLOCK SPRING COUPLING
D070	DRIVER'S SEAT COUPLING
D071	PASSENGER SEAT COUPLING
E050	INSTRUMENT PANEL
H003	IGNITION DEVICE
H066	DRIVER'S SEAT MOVEMENT CONTROLS	-
H067	PASSENGER SEAT MOVEMENT CONTROLS	-
K058	STEERING SENSOR
K074	SLEWING SENSOR (VDC)
M001	BODY COMPUTER
M010	ENGINE MANAGEMENT ECU
M050	ABS CONTROL UNIT
M053	AUTOMATIC TRANSMISSION GEAR SELECTOR CONTROL UNIT	-
M055	AUTOMATIC TRANSMISSION CONTROL UNIT	-
M060	AIR BAG CONTROL UNIT
M063	LUGGAGE COMPARTMENT CONTROL UNIT (NVB)
M066	DRIVER'S DOOR CONTROL UNIT (NPG)
M067	PASSENGER DOOR CONTROL UNIT (NPP)
M070	CLIMATE CONTROL SYSTEM CONTROL UNIT
M084	PARKING SENSOR CONTROL UNIT
M089	STEERING LOCK CONTROL UNIT (NBS)
M162	BLUETOOTH CONTROL UNIT
P020	RADIO

COMPONENT LOCATION - CAN CONNECTION LINES - Alfa Romeo 159 1.8 Fino a 12/05

CAN CONNECTION LINES - COMPONENT LOCATION Alfa Romeo 159 1.8 Fino a 12/05

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Component code	Description	Reference to the operation
B002	JUNCTION UNIT UNDER DASHBOARD
B099	MAXIFUSE BOX ON BATTERY
D020	DASHBOARD/REAR COUPLING	-
D021	DASHBOARD/AIR CONDITIONING-HEATER COUPLING	-
D030	DRIVER'S FRONT DOOR COUPLING	-
D031	PASSENGER FRONT DOOR COUPLING	-
D047	CLOCK SPRING COUPLING
D070	DRIVER'S SEAT COUPLING
D071	PASSENGER SEAT COUPLING
E050	INSTRUMENT PANEL
H003	IGNITION DEVICE
H066	DRIVER'S SEAT MOVEMENT CONTROLS	-
H067	PASSENGER SEAT MOVEMENT CONTROLS	-
K058	STEERING SENSOR
K074	SLEWING SENSOR (VDC)
M001	BODY COMPUTER
M010	ENGINE MANAGEMENT ECU
M050	ABS CONTROL UNIT
M053	AUTOMATIC TRANSMISSION GEAR SELECTOR CONTROL UNIT	-
M055	AUTOMATIC TRANSMISSION CONTROL UNIT	-
M060	AIR BAG CONTROL UNIT
M063	LUGGAGE COMPARTMENT CONTROL UNIT (NVB)
M066	DRIVER'S DOOR CONTROL UNIT (NPG)
M067	PASSENGER DOOR CONTROL UNIT (NPP)
M070	CLIMATE CONTROL SYSTEM CONTROL UNIT
M084	PARKING SENSOR CONTROL UNIT
M089	STEERING LOCK CONTROL UNIT (NBS)
M162	BLUETOOTH CONTROL UNIT
P020	RADIO

DESCRIPTION - CAN CONNECTION LINES - Alfa Romeo 159 1.8 Fino a 12/05

This vehicle is equipped with a CAN (Controller Area Network) system of electrical connections: it involves a software and hardware solution which is designed to manage the resources on the vehicle efficiently allowing:- the sharing of information between the various electronic units;- the intergration of several electronic units through one network;- a high network information exchange speed;- advantages in economic terms because there is a considerable reduction in the wiring/connectors inside the vehicle;- higher standards in terms of quality and reliability.The advantage of using a CAN system stems from the fact that communication takes place between numerous control units and consequently the number of signals to be managed is very high.For this reason the signals travel on a CAN type serial Bus where one wire is high level (H) and the other low level (L); these signals on the CAN Bus are differential types, i.e. the value assigned to the bit is represented by the difference between the CAN-H and CAN-L voltage levels.The different electronic units which make up the system, known as network nodes, are connected to the CAN by means of communication interfaces known as transreceivers; these connection interfaces, integrated in the electronic units, constitute the gate for sending/reading the information at the CAN or at the serial lines.The exchange of information at CAN type serial lines is only possible using a transmission protocol which is the collection of rules that allow communication between two or more nodes by means of the exchange of information or "data packages".The main element of the network is the Body Computer.The Body Computer node is entrusted with "waking up the network" when a "known" TEG is inserted in the TEG Reader (if there is a problem with the Body Computer this task is entrusted to the instrument panel).The Body Computer also carries out the network checking functions which make it possible to provide information on:- the network activities status;- the functional failure status of the individual electronic units (nodes);- a possible CAN fault.The various electronic units process the various signals coming from the corresponding sensors both for their own management and for other control units to which they are sent via the CAN.The specific structure adopted for this vehicle consists of two CAN communication networks which connect nodes belonging to two different areas:- C-CAN for dynamic vehicle control (high speed): bus CAN-H and CAN-L;- B-CAN for the management of standard body functions (low speed): bus CAN-A and CAN-B;the two CAN communication networks are connected to one another by a gateway for transferring joint information, located in the Body Computer Node.The fault diagnosis of the nodes connected to the B-CAN network is carried out via the CAN network, whilst for those connected to the C-CAN this is carried out by means of the specific K lines.There is also the W line, ISO 5 serial for recovery of the Code systemand the A-BUS serial line ISO 5 for the alarm, wiping functions, lighting, tyre pressure monitoring system.Power is distributed via the junction units and/ or fuses boxes. These are connected to control elements (relays and static actuators) to ensure maximum electrical protection and minimum wiring complexity.

FUNCTIONAL DESCRIPTION - CAN CONNECTION LINES - Alfa Romeo 159 1.8 Fino a 12/05

The Body Computer M1 is supplied directly from the battery via line protected by maxifuse F1 of engine compartment control unit B1 at pin 18 of connector F that interfaces with underfacia control unit B2 .The Body Computer M1 receives an ignition-operated supply (INT) at pin 9 of connector F of the interface with the junction unit under the dashboard B2 : this signal is used, amongst other things, to "wake up the network".Pins 8 and 9 of connector I of M1 are earthed.The nodes connected to Body Computer M1 - from pins 36 and 37 of connector B - via the high speed C-CAN network are:- engine management control unit M10;- ABS/VDC control unit M50 ;- automatic transmission control unit M55 (only on version with Automatic Transmission);- gear selector control unit M53 (only on version with Automatic Transmission);- steering angle sensor K58 (only present on versions with VDC);- slewing sensor K74 (only present on versions with VDC);The following nodes are connected to the Body Computer M1 via the B-CAN low speed network:- underfacia junction unit B2 ;- instrument panel E50;- driver''s side door control unit M66 , passenger side door M67 ;- boot compartment control unit M63 ;- parking sensor control unit M84 ;- seat control unit H66 and H67;- Air Bag control unit M60 .- climate control sytem control unit M70;- controls on the steering wheel (via the clock spring D47);- built-in radio-telephone-navigator P20;- Bluetooth control unit M162- steering lock control unit M89 ;- TEG Reader H3.