Fiat GRANDE PUNTO 1.3 Multijet – POWER SUPPLY – – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION

WIRING DIAGRAM - POWER SUPPLY - Fiat GRANDE PUNTO 1.3 Multijet

POWER SUPPLY SYSTEM - WIRING DIAGRAM Fiat GRANDE PUNTO 1.3 Multijet

Get access to all wiring diagrams of the car

COMPONENTS - POWER SUPPLY - Fiat GRANDE PUNTO 1.3 Multijet

Component code	Description	Reference to the operation
A001	BATTERY
A010	ALTERNATOR
A020	STARTER MOTOR
B001	JUNCTION UNIT
B045	LUGGAGE COMPARTMENT JUNCTION UNIT (CVB)
B098	SUPPLEMENTARY FUSE BOX	-
B099	MAXI FUSE BOX ON BATTERY
C002	BATTERY EARTH ON ENGINE
C003	BATTERY EARTH ON BODYSHELL
C015	DASHBOARD EARTH, DRIVER'S SIDE	-
H001	IGNITION SWITCH
M001	BODY COMPUTER
M015	PLUG PREHEATING CONTROL UNIT	-
M086	ELECTRIC STEERING CONTROL UNIT	Op. 4110A30

COMPONENT LOCATION - POWER SUPPLY - Fiat GRANDE PUNTO 1.3 Multijet

POWER SUPPLY SYSTEM - COMPONENT LOCATION Fiat GRANDE PUNTO 1.3 Multijet

Get access to all wiring diagrams of the car

Component code	Description	Reference to the operation
A001	BATTERY
A010	ALTERNATOR
A020	STARTER MOTOR
B001	JUNCTION UNIT
B045	LUGGAGE COMPARTMENT JUNCTION UNIT (CVB)
B098	SUPPLEMENTARY FUSE BOX	-
B099	MAXI FUSE BOX ON BATTERY
C002	BATTERY EARTH ON ENGINE
C003	BATTERY EARTH ON BODYSHELL
C015	DASHBOARD EARTH, DRIVER'S SIDE	-
H001	IGNITION SWITCH
M001	BODY COMPUTER
M015	PLUG PREHEATING CONTROL UNIT	-
M086	ELECTRIC STEERING CONTROL UNIT	Op. 4110A30

DESCRIPTION - POWER SUPPLY - Fiat GRANDE PUNTO 1.3 Multijet

The electrical system is designed to increase the car''s safety level and prevent the possibility of fires and other consequences of electrical malfunctions. State-of-the-art connectors have been introduced to rule out the possibility of many connection defects.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 complexity.All wiring looms have been made modular (sub-assembly composition) by changing the way functions are distributed inside the connectors and replacing welds with short-circuiting joints.The main safety solutions adoptd are as follows:- power supplies protected by maxifuses to cut off the electrical system, in the case of short circuit, (see detail below);- the layout of the whole system is optimised to reduce the risk of damage in the case of faults or accidents;- wiring installation has been optimised to reduced incorrect positioning and noise due to vibrations- all wires offer high resistance to abrasion;- the wires in the engine are a special type , resistant to high temperatures and protected with outer casings or piping;- the wires in the passenger compartment are protected by corrugated pipes and felted tapes to reduce noise levels;- the main connections come with secondary lock terminals and lever locks or "CPA" to prevent terminal deformation.All systems and electrical equipment are supplied by the battery at a voltage of 12V.The battery is recharged by the alternator during engine operationThe main power supply lines are protocted by MAXI FUSES housed in the engine compartment junction unit; other shunt fuses are located outside it.Some circuits are continuously supplied, even with the car at a standstill and the key out because they are connected directly to the battery.Other circuits are supplied by turning the ignition key to various positions:insert the key and turn it through one click to ON. This supplies numerous circuits that are described as ignition-operated (INT and 15/54 lines);- the second click - AVV position - supplies the starter motor (line "50"). Other circuits (those that absorb most power) are now disconnected to ensure maximum current flow to the motor; (INT/A line)767The lines that distribute power to the various appliances are represented by wiring diagrams for the various functions and systems.This general diagram shows all the lines as they leave the battery and maxifuse box. Refer to specific diagrams for more detail.

FUNCTIONAL DESCRIPTION - POWER SUPPLY - Fiat GRANDE PUNTO 1.3 Multijet

All electrical systems and circuits are supplied by battery A1.The main supply lines are protected by maxi fuses in the maxi fuse box on the battery B99, in particular:- F2: engine compartment junction unit B1 power supply - connector X;- F3: engine compartment junction unit B45 power supply - connector A;- F7:spark plug preheating control unit power supply M15- F6: electric steering control unit supply M86There is an additional fuse box B98, next to the maxi fuse box on the battery on one side of the actual battery, with two MIDI maxi fuses which supply the additional heater.Engine compartment junction unit B1 supplies Body Computer M1 and fuse F2.Power distribution to the vehicle (INT "ignition-operated, INT/A, "AVV", etc) is managed by the Body Computer that is connected to ignition switch H1:- ignition switch H1 is supplied by the Body Computer from pin 48 of connector D of M1 via a line protected by fuse F85;- ignition switch H1 sends ignition-operated signal “15/54” to Body Computer M1 at pin 32 of connector D;- ignition switch H1 sends the ”AVV” signal to Body Computer M1 at pin 31 of connector D; and this in turn supplies the starter motor768The ignition-operated power supply except during start-up (INT/A) does not derive from a specific key contact but is deliveredy by the Body Computer control logic by exciting certain specific relays: T5 of the engine compartment control unit and T30 of the boot compartment control unit.