184002799 - E7030 AIR BAG - FUNCTIONAL DESCRIPTION
Operational description
The Air Bag system control unit M60 receives an ignition-operated power supply (INT) at pin 2 of connector A from the line protected by fuse F50 of the junction unit under the dashboard B2.Pin 1 of connector A is connected to the specific earth C50.The early crash sensor K39 detects slight impacts and signals them to the control unit M60 pin 12 of connector A of M60, whilst a reference earth arrives from pin 6.When, according to the control logic, the two sensors and the sensors incorporated in the actual control unit detect a slight frontal impact, the control unit sends signals for the intervention of the front modules in the first stage:
- to the driver''s Air Bag Q9, via the clock spring on the steering wheel D47 (from pins 15 and 16 of connector A of M60 );
- to the passenger Air Bag Q11 (from pins 13 and 14 of connector A of M60 );
- to the driver''s front pretensioners Q20 (from pins 23 and 24 of connector B of M60) and the passenger side ones Q21 (from pins 21 and 22 of connector B of M60);
If a more serious frontal impact is detected, the control unit sends signals for the intervention of the front modules in the second stage:
- to the driver''s Air Bag Q9, via the clock spring on the steering wheel D47 (from pins 19 and 20 of connector A of M60 );
- to the passenger Air Bag Q11, via the clock spring on the steering wheel D182 (from pins 17 and 18 of connector A of M60 );
When, on the basis of the control logic, a side impact of a certain severity is detected, the control unit sends signals for the intervention of the modules:
- to the driver''s front Side Bag Q30 (from pins 19 and 20 of connector B of M60 );
- to the passenger front Side Bag Q31 (from pins 17 and 18 of connector B of M60 );
- to the driver''s Head Bag Q40 (from pins 15 and 16 of connector B of M60 );
- to the passenger Head Bag Q41 (from pins 13 and 14 of connector B of M60 );