Switch On/Off, Front Passenger Airbag (Not USA/CDN)

Fig 1: Identifying Front Passenger Airbag Switch

Courtesy of VOLVO CARS OF NORTH AMERICA.

This switch is used to activate or deactivate the front passenger airbag. The switch is on the side of the dashboard on the passenger side. The switch can only be accessed with the front passenger door open. The ignition key is used to change the position of the switch. When the switch is in the OFF position, all the stages of the passenger airbag are deactivated and the passenger airbag disconnected (PAD) warning lamp lights. When the switch is moved between OFF and ON, the two Hall sensors detect the position of the switch. The Hall sensors for the switch are directly connected to the supplemental restraint system module (SRS). Each Hall sensor is individually connected to the control module. The signal which is transmitted from the Hall sensors has two different current levels, depending on the position of the switch.

A diagnostic trouble code (DTC) is stored if the signal from the Hall sensors cannot be correctly interpreted. The control module may, depending on the fault, deactivate the passenger airbag. The PAD (passenger airbag disconnected) warning lamp lights if the passenger airbag is deactivated. If a fault is detected and the passenger airbag is not deactivated, the SRS warning lamp lights and a text message is displayed in the driver information module (DIM).