Power Supply: Notes

DESCRIPTION- 

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 through the junction boxes and/or fuse boxes. These are connected to control elements (relays and static actuators) to ensure maximum electrical protection and minimum wiring 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 adopted are as follows:

• power supplies protected by maxi fuses to interrupt the electrical system in the event of a short circuit (see detail below).
• the layout of the whole system is optimized to reduce the risk of damage in the event of failures or accidents.
• wiring installation has been optimized to reduce incorrect positioning and noise due to vibrations all wires offer high resistance to abrasion.
• the wires in the engine are specially designed to be resistant to high temperatures and are protected by sheaths or piping.
• the wires in the passenger compartment are protected by corrugated pipes and felt tape to reduce noise levels.
• the main connections come with secondary lock terminals and lever locks or CPA to prevent terminal deformation.

FUNCTIONAL DESCRIPTION 

All the electrical systems and circuits are supplied by the battery A001. The main supply lines are protected by maxifuses in the engine compartment junction unit B001, in particular:

• F01: Body Computer M001 supply;
• F03: ignition switch H001 supply.

All systems and electrical equipment are supplied by the battery at a voltage of 12V. The battery is recharged by the alternator during engine operation. 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 the KEY position. This supplies numerous circuits that are described as ignition-operated (INT and 15/54 lines)
• the second click - AVV position - supplies the starter (line "50").

Other circuits (those that absorb most power) are now disconnected to ensure maximum current flow to the motor (INT/A line).

E1010 POWER SUPPLY SYSTEM - FUNCTIONAL DESCRIPTION: 

• The ignition switch H001 is supplied by the engine compartment junction unit B001 via the line protected by fuse F03.
• in the KEY-ON position, numerous protected ignition-operated circuits and services are supplied (INT and 15/54 lines): the ignition-operated signal 15/54 is sent to the engine compartment junction unit B001 (fuse F16), whilst the INT signal is sent to the Body Computer M001, to pin 11 of connector E.
• the starter is supplied in the AVV position (line 50).
• in this position some circuits are disconnected, with the signal INT/A sent to Body Computer M001 to pin 1 of connector E.