223003417 - E7030 AIRBAG - DESCRIPTION

Description

The car is fitted with an electronically-controlled safety system which, in the case of a front-end crash of some severity, activates the driver''s and passenger''s Air Bags.In the case of a side impact of a certain magnitude, the side Air Bag is activated (only on the side where the impact has taken place).An electronic control unit manages the entire system by controlling all the components and activating the restraint systems (Air Bags) as necessary.There is an accelerometric sensor on the two front door pillars which, in the case of a side impact, transmits a signal to the control unit.This signal is also processed inside the control unit which, as a result, decides on the operation of the Side Bag on the side where the impact has taken place.The control unit is located under the centre console and is rigidly fixed to the bodyshell: in this way the deceleration sensors located inside it are close to the centre of gravity and detect deceleration for the entire vehicle accurately.The driver''s Air Bag module is located at the centre of the steering wheel; it is fitted on a tilting plate which enables the horn to be operated. The plate houses a metal container which holds the folded air bag and a gas generator that inflates the bag.The passenger Air Bag module is located in the dashboard, above the glove compartment and is fixed directly to the vehicle crossmember by means of a special bracket.The passenger Air Bag can be deactivated manually by means of a specific switch.The switch, which is ignition-activated, is located in the dashboard, on the passenger side and is accessible only with the door open. With the key in the OFF position, the control unit also controls the operation of the special ''passenger Air Bag disabled'' warning light.The side Air Bag is housed in the outer part of the front seat. The sensor is located in the centre pillar.

The control unit is self-diagnostic:

• it detects and memorizes any faults
• it recognizes the various components and the type of fault
• it signals the onset of these faults via the special warning light.

System activations following a particularly serious impact are memorized by the control unit.The system control unit supply line is protected by a fuse located in the junction unit under the dashboard.There are different configurations for the Air Bag system (with more or less components) according to the version of the vehicle; the system illustrated is the most complete.