Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Land Rover >> 2012 >> LR2 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 9 (Information And Entertainment System) >> Information And Entertainment System >> Description & Operation >> Audio System >> Component Description >> Automatic Volume Control-AVC

Automatic Volume Control-AVC

WARNING: This page is about a different car, the 2013 Land Rover LR4, 2012 Land Rover LR4, 2011 Land Rover LR4, and 2010 Land Rover LR4. However, it is still accessible from the selected car via links, so may be relevant.

The AVC feature is designed to adjust output volume to compensate for the rising level noise of the vehicle as the vehicle travels faster.

There are 10 settings for AVC, where 0 = off, 1 is the lowest setting (minimum volume change with speed and 9 the maximum).

The vehicle speed signal is used to enable the HU to calculate the volume adjustment required. The vehicle speed signal is received over the controller area network (CAN) from the anti-lock brake system (ABS) control module. The signal is an average of the four wheel speed sensor signals.

Control of the AVC is carried out by the audio amplifier.

Should an invalid speed signal be received the AVC will not alter the output volume.

scientia non olet · About Mike's Workshop Manuals