223001366 - E1010 POWER SUPPLY SYSTEM - DESCRIPTION (MY 2005)
The entire electrical system has been designed and implemented with a view to the most up-to-date safety and protection standards and is particularly well-protected against fire.Two main types of protection are provided:- active protection, to reduce possible fault causes at source;- passive protection, to minimise the effects of a fault.The first category covers careful design of wiring circuits, including well thought-out positioning and fastening and the definition of properly shielded and protected layouts.For this reason, the alternator and motor wires have been modified and protective caps adopted.Passive protections include all actions (always adopted on vehicles in any case) to reuduce high fault currents (overload and short-circuit).The ratings of all fuses in the system have been selected according to the nominal power uptake of any loads that may be activated simultaneously and to ensure cut-in in the case of a general short-circuit.All systems and electrical equipment are supplied by the battery at a voltage of 12V.The battery is, in turn, recharged by the alternator during engine operation See E5010 STARTING AND RECHARINGThe main supply lines are protected by fuses grouped in a junction box located near the battery and supplied directly by 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 position - AVV (starting) - supplies the starter motor; (line "50"), disconnecting some other circuits (those which absorb a lot of power) thereby ensuring the maximum current flow to the actual starter motor; ("INT/A" line);- When the key is removed by turning backward (and pressing a button), PARK position is selected to ensure the side lights are activated even with the key out ( STAZ and POS lines); See E2010 SIDE LIGHTS / NO. PLATE LIGHTS | The lines that distribute power to the various appliances are represented by wiring diagrams for the various functions and systems. |