312001153 - E7030 AIR BAG - FUNCTIONAL DESCRIPTION

FUNCTIONAL DESCRIPTION

The control unit for the Air Bag system M060 receives a supply controlled by the ignition (INT) at pin 2 of connector A from the line protected by fuse F50 of the Body Computer M001 (pin 3 of connector E).Pin 1 connector A of M060 is connected to the specific earth C050A.The front early crash sensor K039 detects slight impacts and signals them to the control unit M060 (pin 12 of connector A); pin 11 of connector A of M60 provides the sensor with a reference earth.When, according to its control logic, the above sensor and the sensors incorporated into the actual control unit detect a slight frontal impact, the control unit M060 sends signals for the intervention of the front modules in the first stage; specifically:

  • to the driver''s air bag Q009, via the clock spring contact on the steering wheel D047 (pins 11 and 12), from pins 15 (positive) and 16 (earth) of connector A;
  • to the passenger side air bag Q011, from pins 13 (earth) and 14 (positive) of connector A;
  • to the front pretensioners on the reels (centre pillars) driver''s side Q020A, from pins 15 (earth) and 16 (positive) of connector B, and passenger side Q021A, from pins 13 (positive) and 14 (earth) of the same connector;
  • to the front pretensioners on the seat belt mounting (3rd point) driver''s side Q020B, from pins 11 (earth) and 12 (positive) of connector B, and passenger side Q021B, from pins 9 (positive) and 10 (earth) of the same connector.
If a more serious frontal impact is detected, the control unit M060 sends signals for the intervention of the front modules in the second stage; specifically:

  • to the driver''s air bag Q009, via the clock spring contact on the steering wheel D047 (pins 9 and 10), from pins 19 (positive) and 20 (earth) of connector A;
  • to the passenger side air bag Q011, from pins 17 (earth) and 18 (positive) of connector A.
The control unit M060 (pins 7 and 8 of connector A) is connected, via the B-CAN line, to the Body Computer M001 and to the instrument panel E050.When the system autodiagnostic function detects a fault or an impact is recorded, the control unit M060 sends a signal, via the CAN, for the the activation of the Air Bag fault warning light located in the instrument panel E050.It is possible, using the buttons to the right of the instrument panel, to deactivate the front passenger air bag via the dedicated menu in the instrument panel display which causes the warning light to come on.