Fiat GRANDE PUNTO 1.2 8v – A-BUS SERIAL LINE – – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION

WIRING DIAGRAM - A-BUS SERIAL LINE - Fiat GRANDE PUNTO 1.2 8v

A-BUS SERIAL LINE - WIRING DIAGRAM Fiat GRANDE PUNTO 1.2 8v

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COMPONENTS - A-BUS SERIAL LINE - Fiat GRANDE PUNTO 1.2 8v

Component code	Description	Reference to the operation
B001	JUNCTION UNIT
B099	MAXI FUSE BOX ON BATTERY
C010	LEFT FRONT EARTH	-
C015	DASHBOARD EARTH, DRIVER'S SIDE	-
H001	IGNITION SWITCH
K085	RAIN SENSOR
M001	BODY COMPUTER

COMPONENT LOCATION - A-BUS SERIAL LINE - Fiat GRANDE PUNTO 1.2 8v

A-BUS SERIAL LINE - COMPONENT LOCATION Fiat GRANDE PUNTO 1.2 8v

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Component code	Description	Reference to the operation
B001	JUNCTION UNIT
B099	MAXI FUSE BOX ON BATTERY
C010	LEFT FRONT EARTH	-
C015	DASHBOARD EARTH, DRIVER'S SIDE	-
H001	IGNITION SWITCH
K085	RAIN SENSOR
M001	BODY COMPUTER

DESCRIPTION - A-BUS SERIAL LINE - Fiat GRANDE PUNTO 1.2 8v

This vehicle is equipped with a CAN (Controller Area Network) system of electrical connections.The different electronic units that make up the system, known as network "Nodes" are connected to the CAN; the main element of the network is the Body Computer.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 structure 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.A special ISO 5 serial A-BUS line manages the connection with the rain sensor (and other devices not yet adopted in the present version of the model)

FUNCTIONAL DESCRIPTION - A-BUS SERIAL LINE - Fiat GRANDE PUNTO 1.2 8v

Body Computer M1 - connector G - is supplied directly from the battery from a line protected by maxifuse F2 of engine compartment control unit B1. It is ignition-operated (INT) at pin 32 of connector D. Pin 10 of connector H of M1 supplies a reference earth to the Body Computer.Rain sensor K85 is supplied by the INT line of Body Computer M1 - pin 7 of connector E - a sends an automtic windscreen wiper operation signal via the A-BUS serial line - pin 35 of connector A of M1.