223003405 - E7030 AIRBAG - FUNCTIONAL DESCRIPTION

Functional description

The control unit for the Air Bag system M60 is controlled by the ignition (INT) at pin 12 of connector A from the line protected by fuse F50 , located in the under-facia junction unit B02 . Pin 11 is earthed.

When the control logic detects a frontal impact of a certain severity, the control unit M60 (connector A) sends signals for controlling the operation of the following modules:

• to the driver''s air bag Q09 (from pins 23 and 24).
• to passenger side air bag Q11 (from pins 19, 20, 21, 22);

Pins 7 and 8 of connector A of the control unit M60 are connected to the passenger Air Bag disabling switch H75 .

The side impact detection sensors K66 (driver''s side) and K67 (passenger side) send signals to pins 11 and 12, 9 and 10 of connector B of control unit M60. When the control logic detects a side impact of a certain severity, the control unit M60 (connector B) sends signals for controlling the operation of the following modules:

• to the driver''s side Air Bag Q30 (from pins 17 and 18);
• to the passenger side Air Bag Q31 (from pins 19 and 20);
• to the Head Bag Q40 (from pins 13 and 14);
• to the Head Bag Q41 (from pins 15 and 16);

All these modules are earthed via pin 3.In the case of a severe impact, the control unit M60 also operates the driver''s seat belt pretensioner Q20 (pins 21, 22 connector B) and the front passenger belt pretensioner Q21 (pins 23, 24 connector B).When the autodiagnostic system detects a fault or if an impact is detected, the control unit M60 notifies the body computer from pin 10 connector A and the instrument panel E50 from pins 5 and 6 of connector A. The instrument panel activates the ''Air Bag failure'' warning light.The supply for the body computer M01 is both controlled by the ignition and direct to pin 11 of connector E (INT) and pin A of connector C of the junction unit under the dashboard B02 .There is a protective fuse F1 for the direct supply located in the engine compartment junction unit B01 .These lines also supply the instrument panel and split inside the junction unit under the dashboard B02 (MAXIFUSE). The lines are protected by fuses F37 and F53.Pins 8 and 9 connector D of the body computer M01 are connected to earth. This reference signal is also sent to the panel via pin 36 of the body computer.The diagnostic line is connected to pin 3 connector B of the body computer M01 (    See E8010 DIAGNOSTIC MULTIPLE CONNECTOR).