Activating/Deactivating Front Passenger Airbag (Not USA/CDN)

Fig 1: Identifying Activating/Deactivating Front Passenger Airbag (Not USA/CDN)

Courtesy of VOLVO CARS OF NORTH AMERICA.

If necessary, the front passenger airbag (8/31 and 8/32) can be deactivated. This is done using a switch (3/157) positioned on the dashboard on the passenger side.

When the switch position changes from "ON" to "OFF", the current levels change on the two Hall sensors which are connected to the switch.

The Hall sensors send, on directly connected cables, the changed current levels to Supplemental restraint system module (SRS) (4/9). The control module's software deactivates airbag passenger front, which means that the airbag remains inactive in case of a collision.

Supplemental restraint system module (SRS) also sends a signal on the CAN-net, to Central electronic module (CEM) (4/56), with a request to turn on warning light airbag passenger (PAD).

When the switch position changes from "OFF" to "ON", a new current level is sent from the Hall sensors to Supplemental restraint system module (SRS).

Then the control module's software activates the airbag, which means that the airbag has full function in case of a collision. At the same time the Supplemental restraint system module (SRS) sends a signal on the CAN-net, to Central electronic module (CEM) with a request to turn off warning light airbag passenger (PAD) and to turn on warning light activated airbag passenger (PAE).