AIRBAG - Functional description

04/01 to 06/02, up to 03/01

Functional description

The Air Bag system control unit M60 receives a supply controlled by the ignition (INT) at pin 7 of connector A from the line protected by fuse F50 of the additional fuse box B2.

Pin 6 is connected to the specific earth C50.

When frontal impact of a certain severity (depending on the software setting) is detected, the control unit sends control signals to set off the modules:

• to driver's Air Bag Q9, via the steering wheel clockspring D47 (from pins 14 and 13 of connector A of M60 ):
• to passenger side air bag Q11 (from pins 15 and 16 of connector A of M60 ):
• to the driver's pretensioner Q20 (from pins 13 and 14 of connector B of M60 ) and the passenger pretensioner Q21 (from pins 15 and 16 of connector B of M60 ).

A signal from passenger Air Bag disabling switch H75 reaches pin 11 of connector A of M60.

The side impact detection sensors K66 (driver's side) and K67 (passenger side) send signals to pins 1, 2, 3 and 4 respectively of connector B of the control unit 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 bag Q30 (from pins 17 and 18 of connector B of M60 );
• to passenger side bag Q31 (from pins 19 and 20 of connector B of M60 );
• to the driver's Head Bag Q40 (from pins 21 and 22 of M60 );
• to the passenger Head Bag Q41 (from pins 23 and 24 of connector B of M60 ).

The seat structure that houses the two side bags is connected to earth C50.

When the system self-diagnostic function detects a fault or an impact is detected, control unit M60 sends a signal -from pin 17 of connector A - to the Air Bag faulty warning light located in the instrument panel E50 .; pin 12 of connector A of M60 sends the signal for the 'passenger disabling' warning light.

Self-diagnostic data can be read by connecting the unit to connector G of Body Computer M1 - pin 3: this receives signals from pin 9 of connector A of control unit M60 through the relevant tester line.

03/03 to 09/03, 07/02 to 02/03, 10/03 to 01/04, from 02/04

Functional description

The Air Bag system control unit M60 receives a supply controlled by the ignition (INT) at pin 12 of connector A from the line protected by fuse F50 of the additional fuse box B2.

Pin 1 of connector A and pins 17 and 22 of connector B are connected to a specific earth C50.

When frontal impact of a certain severity (depending on the software setting) is detected, the control unit sends control signals to set off the modules:

• to driver's Air Bag Q9, via the steering wheel clockspring D47 (from pins 24 and 23 of connector A of M60):
• to passenger side air bag Q11 (from pins 21 and 22 of connector A of M60 ):
• to the driver's pretensioner Q20 (from pins 2 and 1 of connector B of M60) and the passenger pretensioner Q21 (from pins 4 and 3 of connector B of M60);

A signal from passenger Air Bag disabling switch H75 reaches pin 11 of connector A of M60; pin 10 of connector A of M60 provides the reference earth.

The side impact detection sensors K66 (driver's side) and K67 (passenger side) send signals to pins 24, 26, 25 and 27, respectively of connector B of the control unit 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 Bag Q30 (from pins 6 and 5 of connector B of M60);
• to passenger Side Bag Q31 (from pins 9 and 10 of connector B of M60);
• to the driver's Head Bag Q40 (from pins 8 and 7 of connector B of M60);
• to the passenger Head Bag Q41 (from pins 11 and 12 of connector B of M60).

The seat structure that houses the two side bags is connected to earth C50.

When the system self-diagnostic function detects a fault or an impact is detected, control unit M60 sends a signal -from pin 8 of connector A - to the Air Bag faulty warning light located in the instrument panel E50 .; pin 7 of connector A of M60 sends the signal for the 'passenger disabling' warning light.

Self-diagnostic data can be read by connecting the unit to connector G of Body Computer M1- pin 3: this receives signals from pin 6 of connector A of control unit M60 through the relevant tester line.