Communication Activated by the SRS Control Unit

Fig 1: Identifying Communication Activated By SRS Control Unit

Courtesy of VOLVO CARS OF NORTH AMERICA.

If a component (driver/passenger air bag, SIPS bag, IC inflatable curtain or belt tensioner) in the SRS system is activated, the following takes place: 

• The SRS sends a signal to the PHM, via conventional wire and CAN, that a component has been activated.
• The telephone is activated in the Volvo On Call Plus service mode.
• Contact is established with the Service Center.
• The Service Center is in verbal contact with the driver/passenger and takes appropriate action for the situation at hand. If the driver/passenger is incapable of verbal contact, the Service Center decides who/what is to be contacted. The Service Center establishes verbal contact with the appropriate local emergency center/rescue service. The Service Center provides the local emergency center/rescue service with information about the vehicle position, vehicle status and driver data.
• Depending on how/whether the vehicle and the Service Center manage to establish verbal/data communication, the status is always displayed on the DIM. If, for example, only data communication is possible (that is, verbal contact is not possible) the message "Message received by On Call Plus" is displayed on the DIM.