Reverse Warning System (Does Not Apply To S80 2004-)

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2006 Volvo S80, 2005 Volvo S80, 2004 Volvo S80, 2003 Volvo S80, and 2002 Volvo S80. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Reverse Warning System

Courtesy of VOLVO CARS OF NORTH AMERICA.

The reverse warning system shall warn the driver if the car approaches an object when reversing. The driver is warned by an audible signal in the speakers for the audio control module (AUM) (16/1). The audible signal sounds at more frequent intervals as the object gets closer. A signal is sent from the reverse warning system's control module to the accessory electronic module (AEM) (4/78) which indicates if buzzer signal shall be turned on or off.

The accessory electronic module (AEM) (4/78) then sends a signal to the audio control module (AUM) (16/1) via the CAN-net.

If a trailer or caravan is connected the reverse warning system must be deactivated by switching on the indicator lamps.

The accessory electronic module (AEM) then receives a signal from the central electronic module (CEM) (4/56) that reverse gear has been selected.