2401174 - E7030 AIRBAG - Functional description
Functional description
The Air Bag system control unit M60 receives a supply controlled by the ignition (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 special earth C50. Early crash sensor K39 detects slight bumps and reports them to control unit M60 - pin 12 of connector A of M60.When a frontal impact of a certain severity (depending on the control strategy, data from the above two sensors and sensors incorporated in the control unit) is detected, the control unit sends control signals for stage 1 operation of the front modules:
- to driver's Air Bag Q9, via the steering wheel clockspring D47 (from pins 15 and 16 of connector A of M60):
- to the passenger airbag Q11 (from pins 13 and 14 of connector A of M60);
- to the pretensioners on the driver's side Q20 (from pins 23 and 24 of connector B of M60) and the passenger side Q21 (from pins 21 and 22 of connector B of M60);
When frontal impact of a certain severity is detected, the control unit sends control signals to set off the stage 2 front modules:
- to driver's Air Bag Q9 , via the steering wheel clockspring D47 (from pins 19 and 20 of connector A of M60 ):
- to passenger side air bag Q11 (from pins 17 and 18 of connector A of M60 ):
When side impact of a certain severity (dependent on the software setting) is detected, the control unit sends control signals to set off the modules:
- to driver's side front Air Bag Q30 (from pins 19 and 20 of connector B of M60);
- to passenger side front Air 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).